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Two Postulates -- Special Relativity (1 of 5) Posted by: dcolarusso Video duration: 432 seconds Transcript: http://www.davidcola russo.com/blog/?p=39 #more-39 The Tabletop Explainer is an intermittent educational vlog presenting answers to viewer questions, brief science lessons, and ideas for teachers and students. It is a feature of my blog "Tilts at Windmils" which can be found at http://www.davidcola russo.com/blog/ Display Video Comments | Hide Video Comments | Add Comment Latest comments made on this video: The speed of the ... By: jhdlmn. on 23 Nov 08, 02:55:49 The speed of the candy, if thrown perpendicular to the motion of the truck can be extrapolated using Pythagorean Theorem. One leg of the triangle is the speed of the truck at 2mph and the other leg is the speed the candy is thrown at 5mph. The actual speed of the candy relative to the observer equals the square root of the sum of 2mph and 5mph or the 2/sin(arctan(2/5)). If the plane ... By: JohnMichaels16. on 08 Nov 08, 22:25:53 If the plane accelerates, the bag will appear to go flying backwards. You will also feel pushed back into your seat. This is because you and the bag have a certain amount of motion. When you start, you the bag and the plane are all moving at the same velocity. When the plane's engine increases its velocity, you and the bag will continue with your original amount. Thus your seat will literally run into you, and fly faster than the bag is moving. Thats why the bag appears to go backward. If he throws the ... By: JohnMichaels16. on 08 Nov 08, 22:12:56 If he throws the candy out of the screen, it will continue to the right at two miles per hour, neglecting wind resistance. Its direction out of the screen towards you will be the speed that he throws it at, 5 mph. One of the properties of velocity is direction, so perpendicular velocities can not be added. If he throws it up it will continue to the right at 2 mph, mean while rising and then falling due to gravity. 3:55 - 4:48 when he ... By: Alexhoglander. on 01 Nov 08, 01:27:23 3:55 - 4:48 when he is throaing candy from the truck, the candy that is traveling forwards trvels 7 m/h and when he throaws backwards the candy travels 3 m/h. Now heres the question, how fast will it travel if he throaws it to the side? and up? Sorry if i spell something wrong im from sweden. xD I can not hear what ... By: Alexhoglander. on 01 Nov 08, 01:16:39 I can not hear what u say 2:05-2:12. Will the bag be under my hand after the bag landed and the plane speeds up. I can't realy understand that. maybe it is because and don't realy hear what u are saying in that or it is not good enough explained to understand. anyone want to chat ... By: frog1812. on 04 Oct 08, 21:09:02 anyone want to chat? hit up my page At 5:55... A photon ... By: mods3. on 22 Sep 08, 01:52:29 At 5:55... A photon _DOES NOT_ change speed at all. Even if it's traveling through a medium - it continues to travel at the speed of light, however its travel is impeded by the particles in the medium! ~G~! If I understand ... By: 13248396. on 17 Sep 08, 17:28:58 If I understand this Universe correctly, there most certainly IS a "fixed point" - The ORIGIN - the point we're all rushing away from-heh thing is no matter were u are in the universe you will seem your are the center of the universe. Man in the moon would see himself has the center has phoenix in Mars seems to be the center of everything.Only way to explain it is if there is time dilation and length contraction. I think that this ... By: RoadRunnerLaser. on 16 Sep 08, 13:34:41 I think that this must be one of those "counter-intuitive" aspects of relativity, because as you say, observations would lead the experimenter to conclude that they are "at rest". It's one of those things that just when I think I understand, I suddenly realise that I've got hold of the wrong end of a stick from completely the wrong tree and not even from the right forest ! The equations of ... By: Tetrahelix. on 16 Sep 08, 13:22:35 The equations of relativity do show Doppler shift when an observer is moving relative to the light source. This is not the result of the light moving faster or slower relative to the observer, but rather due to time dilation and length contraction. However, there is no absolute movement: all motion is relative. If an observer were to use measurements of c to determine his or her speed, that observer would always find that he or she is at rest. This has been repeatedly confirmed by experiment. If that were true ... By: RoadRunnerLaser. on 16 Sep 08, 05:26:19 If that were true then please explain how doppler shift is apparent in the light emitted from stars and galaxies travelling at significant speeds. If I understand this Universe correctly, there most certainly IS a "fixed point" - The ORIGIN - the point we're all rushing away from. The speed of light is fixed relative to that origin, by my understanding. No. The speed of ... By: Tetrahelix. on 16 Sep 08, 04:57:57 No. The speed of light is constant relative to the observer, not relative to a static frame of reference. You rule. By: Max11551. on 11 Sep 08, 19:03:12 You rule. this is sooooo good ... By: libbeingcool. on 02 Aug 08, 07:16:21 this is sooooo good~~~ awesome~~~ i loved it no. By: coldfustion. on 30 Jun 08, 03:53:50 no. what if you kicked ... By: peterthemegapimp. on 29 Jun 08, 07:43:33 what if you kicked the truck in reverse at 10 mph. would the photon move at 680,000,000 -10 mph, slower than the speed of light? Thank you so much ... By: latewire. on 10 Jun 08, 04:49:37 Thank you so much for doing this, I wish more people would know science! Thanks for ... By: highburycatherine. on 04 Jun 08, 05:31:35 Thanks for uploading :) your objections ... By: nialccmwr. on 26 May 08, 03:17:01 your objections only reflect a lack of understanding of relativity. it can be difficult to wrap your mind around it, but the assertions of relativity are true and without paradox or illusion. it's just that the conclusions aren't what we expect based on the world we're used to observing. if you chase light at 90% the speed of light, you will observe it moving away from you at the speed of light. non-intuitive, unexpected, odd, and true. Exactly. If light ... By: dasgregorian. on 07 May 08, 19:28:16 Exactly. If light is traveling at a constant speed relative to it's source, it's not traveling at a constant speed relative to anything moving relative to the light's source. If a person moving at 99%C can see their reflection in a mirror normally, light is moving normally... whatever optical illusions you may detect... are illusions. An observer isn't going to suddenly experience time more slowly because YOU started running. a police car A is ... By: independence8. on 03 May 08, 23:09:37 a police car A is chasing a car B, both travelling at 4/5 at speed of light, seperated by a distance of one light second. they both pass earth. what is this distance of seperation as seen by an observer on earth? THANKS.. THESE ... By: mugwamp4. on 03 May 08, 21:23:47 THANKS.. THESE POSTINGS ARE GREAT.. Special Relativity ... By: kerpal2343. on 01 May 08, 21:32:41 Special Relativity exception. If you have a light and a proton speed detector that measures the speed of the light on the plane you can do the math and boom thats your speed. Great vids ! good ... By: Jernespand. on 23 Apr 08, 19:01:12 Great vids ! good job ! Photon A travels ... By: dasgregorian. on 23 Apr 08, 08:25:00 Photon A travels away from it's source... The first observer isn't moving relative to the source and will see that photon at a certain frequency. A second observer moving relative to the light source will observe the same photon at a different frequency (red shift/blue shift). If frequency changed, this means one of two things. Either the wavelength changes depending on the observer... no. Or the speed of the wave is dependent upon YOUR speed relative to that wave.

How to build a simple electric motor, plus how it works. Posted by: dcolarusso Video duration: 137 seconds The Tabletop Explainer is an intermittent educational vlog presenting answers to viewer questions, brief science lessons, and ideas for teachers and students. It is a feature of my blog "Tilts at Windmils" which can be found at http://www.davidcola russo.com/blog/ Display Video Comments | Hide Video Comments | Add Comment Latest comments made on this video: i think it is under ... By: napunseki. on 02 Dec 08, 03:35:01 i think it is under electromagnetism. im pretty sure it is What would this ... By: TooGooD360. on 30 Nov 08, 23:26:52 What would this experiment be defined as? Would it be under electromagnetism? Oops, These were ... By: ryannh9. on 29 Nov 08, 05:17:33 Oops, These were replies to previous posts. Clearly, I have yet to master the procedure for commenting on youtube. if I push something ... By: ryannh9. on 29 Nov 08, 05:11:13 if I push something, will it move towards me? I don't have sound ... By: ryannh9. on 29 Nov 08, 05:09:24 I don't have sound working on my computer yet, so I don't know what he said, but: You're wrong. This doesn't necessarily have anything to do with induction or electromagnets. It has to do with the Lorentz force that describes the force on a moving charge in a magnetic field. More loops -> more moving charges -> more torque -> coil moves faster. Or if you could reduce the resistance in the wires you get faster moving charges -> more torque -> coil moves faster my question is, is ... By: jackanywhere. on 28 Nov 08, 18:57:07 my question is, is it possible to spin a dynamo without using any outside source, like ; wind ,or water, or fuel like gas , and how about if I'm going to spin the dynamo using it's own energy to spin it self. can it be possible ? The wire is ... By: bzzzb. on 27 Nov 08, 18:28:13 The wire is insulated with plastic so the electrons have to go in a circle. OMG It's so easy to ... By: jusk2ru. on 26 Nov 08, 16:19:22 OMG It's so easy to make!!! Actually when I was 7 I use to make this cind of stuff... smartass By: boobleplatz. on 24 Nov 08, 19:12:53 smartass Ok I have a good ... By: SteliosRulez. on 24 Nov 08, 03:14:41 Ok I have a good question. Is it just a cirle of the same material cause if it is then what you showed is impossible. Electrons will not move from the back direction on the down side of the circle, they will move on the same side and the forces will exterminate each other.. enlighten me plz ... why are you telling ... By: littleteddy9. on 24 Nov 08, 00:26:23 why are you telling people that and how do you know that? you do not explain ... By: littleteddy9. on 24 Nov 08, 00:24:38 you do not explain how you make it i tought you were the table top explainer I made one in about ... By: dax000ah. on 22 Nov 08, 02:59:47 I made one in about 10 minutes but it took a lot of tweaking to get the right balance and distance of the loop from the magnet. It works though. U DIDNT EVEN SHOW ... By: gilroys6. on 19 Nov 08, 23:40:10 U DIDNT EVEN SHOW US HOW TO MAKE IT in this video you ... By: muzike02. on 17 Nov 08, 10:17:55 in this video you can see the application of electromagnets and electromagnetic induction in electromagnet if there is an iron surrounded by a coil that has a current flowing in it causes the iron to become a magnet and while in electromagnetic induction the change in the magnetic field induce electricity. so more loops of coil more electricity and magnetic field so the coil moves faster you sound like dave ... By: eyeieuan. on 14 Nov 08, 10:30:52 you sound like dave off dude wheres my mount could u do it wid a ... By: diabolomanpaino. on 13 Nov 08, 17:15:17 could u do it wid a battery wut did u strip. ... By: paczman2life. on 12 Nov 08, 21:46:47 wut did u strip. the two ends ???? i need help this is my science project :(( perpetual motion is ... By: HalfScottishGuy. on 11 Nov 08, 01:25:52 perpetual motion is physically impossible. gay By: whiteboy1298. on 10 Nov 08, 20:57:00 gay yes faster faster By: marcino22121991. on 09 Nov 08, 12:50:35 yes faster faster The song is "Time ... By: dcolarusso. on 08 Nov 08, 19:51:36 The song is "Time to Funk" from Trafic de Blues, as mentioned in the credits and you can find them over at Jamendo. look at 2:05 By: zeldaisthebest. on 08 Nov 08, 14:42:28 look at 2:05 Nice setup, by the ... By: Sniper2008009. on 07 Nov 08, 19:44:43 Nice setup, by the way can you tell me what song is used for this video? I really like the background music especially with it's "jazz" feel in it..thx that thing is soooo ... By: mileyhatersrwelcome. on 06 Nov 08, 01:26:40 that thing is soooo awesome and its so simple

Electricity & Magnetism Hand Rules (part one) Posted by: dcolarusso Video duration: 231 seconds The Tabletop Explainer is an intermittent educational vlog presenting answers to viewer questions, brief science lessons, and ideas for teachers and students. It is a feature of my blog "Tilts at Windmils" which can be found at http://www.davidcola russo.com/blog/ Display Video Comments | Hide Video Comments | Add Comment Latest comments made on this video: you learn more on ... By: TonganSoIja63. on 30 Nov 08, 07:19:56 you learn more on youtube then in schools..Its even way more entertaining so you tend to listen more instead of wondering off.. Ummm...isn't ... By: starsoffyre. on 14 Nov 08, 14:04:07 Ummm...isn't electricity the flow of electrons? The answer to what ... By: Thetranslatorguy. on 23 Oct 08, 20:38:55 The answer to what electricity is is that there is NO answer, since NOBODY knows what electricity even is EXACTLY... not scientist, engineers, electricians,etc...... I don't go to ... By: Arguimbau33. on 15 Sep 08, 05:18:49 I don't go to school I youtube lol i so agree By: realdude04. on 12 Sep 08, 02:06:10 lol i so agree Great video, and a ... By: haesther. on 26 Jul 08, 07:08:03 Great video, and a great idea... using youtube for more than just wasting time. Free education... who knew. why does condemning ... By: amirfarid91. on 16 Jul 08, 02:48:59 why does condemning a trend here? i doubt any of u wise-asses are THAT smart anyhow. so stop picking on others and wipe ur own shitty ass Neither are you, ... By: CalxCastor. on 26 Jun 08, 17:15:00 Neither are you, I'm afraid. His spelling is perfect. You're thinking of his punctuation and grammar... No, you're just too ... By: 7188181. on 24 Jun 08, 07:39:47 No, you're just too SLOW. By the looks of ... By: 7188181. on 24 Jun 08, 07:39:25 By the looks of your spelling, you're definitely NOT a genius. ty. By: aceshigh1091. on 16 Jun 08, 15:59:45 ty. im sure you have ... By: safebladgetme. on 30 May 08, 23:01:21 im sure you have the north and south poles mixed up, or current flows in other direction to the one which you say. use the left hand rule, the wire should move UP, in first experiment, since field acts in direction north to south and current flows from black to red as you say. think about it. .. go wank off By: Mythmakers. on 25 Apr 08, 08:22:05 .. go wank off your a genius... ... By: tjawatdan. on 30 Mar 08, 23:48:26 your a genius... tomorrow i have a exam about this subject and before i saw this i didn't understood. next time do it a little bit slower. but THUMBS UP!!! You explain it too ... By: CalxCastor. on 24 Mar 08, 09:17:03 You explain it too quickly! Besides, I am more familular with the other rule: Thumb = Motion; forefinger = North to South; and middle finger = flow of current. every type of metal ... By: timothyp2009. on 21 Mar 08, 12:02:55 every type of metal can be turned magnetic by running a current through it no, aluminum is not ... By: grrumpff. on 08 Mar 08, 07:37:02 no, aluminum is not magnetic. yes, aluminum is an electroconductor. :D I dont know the answer for the last question though... Is aluminum ... By: ISRAELITECHURCH. on 23 Feb 08, 08:57:29 Is aluminum magnetic? Is aluminum an electroconductor? What did the electromagnetic field supply? Thanks. Interesting stuff. You are ... By: carioca1983. on 12 Feb 08, 07:52:50 You are retarded.You'd better thank the person who posted this video, moron thanks a lot for ... By: saifrizwan. on 24 Dec 07, 14:00:38 thanks a lot for all the videos you've posted they helped me a lot! thanks mate By: frostwow. on 17 Dec 07, 07:03:28 thanks mate An interesting way ... By: Kitt0000. on 11 Dec 07, 10:50:33 An interesting way to visualize, thanks for sharing. That is an ... By: electroninstructor. on 27 Oct 07, 02:56:35 That is an excellent video, in the true spirit of open source sharing ! We were just talking about hand rules in my electronics class. This is a very useful educational tool for students and teachers. I love the demonstration using the foil across the magnet. Brilliant ! try it in the ... By: WDX7770243546. on 13 Sep 07, 23:36:34 try it in the microwave please. yea cuz you think ... By: hthglllkhgjg. on 02 Sep 07, 23:47:01 yea cuz you think the electric field is in the direction of the proton lol 150 year old news flash, ELECTRONS are the current not protons

What is the magnetic field? Posted by: dcolarusso Video duration: 149 seconds The Tabletop Explainer is an intermittent educational vlog presenting answers to viewer questions, brief science lessons, and ideas for teachers and students. It is a feature of my blog "Tilts at Windmils" which can be found at http://www.davidcola russo.com/blog/ Display Video Comments | Hide Video Comments | Add Comment Latest comments made on this video: So-called magnetic ... By: 77GSlinger. on 18 Nov 08, 17:25:12 So-called magnetic attraction is actually voidance. Check it out at 1:50. When the two opposite poles meet they void each other and their poles are extended to the extreme opposite ends of their newly combined magnetic fields. This demonstrates the proof of magnetic voidance and not magnetic attraction. Magnetism's only function is to repel and electricity is actually the attractive force. Academic explantions about magnetism are corrupted by this huge perceptional error. Walter Russell rules! the magnetic field ... By: colon98765. on 13 Nov 08, 02:50:51 the magnetic field of the earth exerts a force on the compass needle (which is made of a metal that is magnetic) this force exerts a torque on the needle which causes it to spin in the direction of the magnetic field once it's in line with the field (that's when the needle is pointing directly at the earth's magnetic south pole, which is atually the geographic north pole) it will stay there unless if there is a stronger field thats affecting the compass. Good video but ... By: SmellsLikeAwesome7. on 12 Nov 08, 16:55:21 Good video but didn't help me =/ PLEASE PLEASE PLEASE WILL SOMEONE SEND ME A VIDEO ABOOUT HOW THE MAGNETIC FIELD AFFECTS THE DIRECTION THAT A COMPASS POINTS i will be really grateful if someone did but it has to be by tonight xx magnetic field ... By: V8decimator. on 11 Nov 08, 06:30:46 magnetic field lines don't start or stop. it just told you!!! By: max345612. on 06 Nov 08, 00:08:38 it just told you!!! and me.i built ufo ... By: drhoecker. on 28 Oct 08, 18:21:23 and me.i built ufo drive.works why do magnets ... By: canadamonster. on 26 Oct 08, 23:34:41 why do magnets attract and repel ? a bit over ... By: DonHoraldo. on 18 Oct 08, 06:15:49 a bit over simplified. excellent. I even ... By: BenZeneProject. on 10 Oct 08, 08:16:23 excellent. I even like the music. Go replace Bill Nye. imu, magnets have a direct bipolar effect on the etheric fluid, unlike other substances which exhibit monopole, paramagnetic or radionic properties. Thus the magnets' ability to align itself to any other magnetic field creates never ending questions. gravity==majority monopole material? magnetism==majority dipole material? I'm not sure if somebody else said this before me or not, but it seems axiomatic. magnets seem to be special mass. but what is the ... By: dreamdimensions. on 04 Oct 08, 23:35:30 but what is the mechanism of cycling the electric field? only I know ;D intresting can you ... By: Firetorch99. on 24 Sep 08, 04:23:24 intresting can you explain me a way to make a magnetic feild?im just a kid trying to make a go cart using magnetic feilds lol im tryin to improve my dad... does a magnetic ... By: therealTOTOfan. on 19 Sep 08, 16:16:28 does a magnetic field have any effects to health? or electric magnetism? please help me i'm just a little kid searching for answers lol are field line real ... By: 13248396. on 17 Sep 08, 18:48:04 are field line real physical things? i dont think so, i think they r just a representation of the relation, like a probability wave doesnt exist its just a representation of a relatio (calculus).am i wrong? Can the existing ... By: relaxedguy55. on 03 Sep 08, 01:53:21 Can the existing magnetic properties of tin be negated by inducing a negative charge on a semiconducting ceramic substrate preventing the movement of .022" Tin95.5/Silver4.0/Copper.5 balls? Think of the lines ... By: dcolarusso. on 17 Jul 08, 04:37:12 Think of the lines like contour lines on a topographical map. There is no correct number of lines to draw. In fact, there are an infinite number of lines one could draw. What is important is that they communicate the proper relationship between one place and another. Where the magnetic field is stronger there are "more" lines. This is analogues to contour lines, where the mountain is steeper there are more lines. How many you have depends on the scale you choose. does it matter how ... By: M3T4LH34D812. on 16 Jul 08, 03:55:55 does it matter how many lines? Wouldn't that be relative to the size of the particles that were making up the matter of the magnet? In other words the resolution of the matter smaller atomical size = more field lines.Then again, smaller particle size could = less definitive lines and tend to gauss blur into a magnetic mass depending on the medium it was existing in. Or greater overall magnetic force could compress the field in tighter which could give the appearance of more lines. dude. ofcourse you ... By: cathy2708. on 06 Jul 08, 12:03:32 dude. ofcourse you can! the only problem is the amount of magnets you need. therefor people would make an electromagnetic rink Thanks! By: pantadon. on 02 Jun 08, 11:18:45 Thanks! awesome. thanks a ... By: safebladgetme. on 30 May 08, 16:57:48 awesome. thanks a lot great so can i ... By: TheStoicAgnostic. on 17 May 08, 02:48:13 great so can i make a gigantic magnetic rink and have some reversed magnetic shoes and just start gliding around who wouldn't want to try that thanks for showing ... By: variablestatus. on 16 May 08, 22:48:15 thanks for showing basic magnetic forces, 5'*s and keep up the good work on teaching... I could be wrong, ... By: GSpotter63. on 15 May 08, 03:54:37 I could be wrong, but magnetic field lines sure look a lot like standing wave patterns to me. When these waves pass through matter with the appropriate arrangement of atoms then they are either pushed together or pushed apart. If this is correct, then perhaps one could reproduce these standing waves (a magnetic field) using simple wave modulation (I.E. radio waves) instead of coils of wire to force the atoms to spin together. ok, but you stated ... By: undokat. on 11 May 08, 00:39:06 ok, but you stated the question 'what is the magnetic field?' it's not just lines on a paper, leading from N to S. what is behind the phenomenon? i was realy curious what you were going to show, when i saw the title you put on your video. n the video it said ... By: saq05. on 28 Apr 08, 03:24:06 n the video it said "magnetic field lines start at a north pole and end at a south pole"--Actually unlike electric field lines which terminate at an electric charge, magnetic field lines DO NOT "start" or "end" anywhere. Rather you can imagine magnetic field lines as a continuous closed loop. In the video it ... By: saq05. on 28 Apr 08, 03:21:27 In the video it said magnetic field lines start at north and end at south. ACTUALLY unlike electric field lines, magnetic field lines DO NOT "start" or "end" anywhere. you can imagine them like continuous closed loop that has no point to begin and end.

Nomenclature -- Special Relativity (2 of 5) Posted by: dcolarusso Video duration: 186 seconds Transcript: http://www.davidcola russo.com/blog/?p=41 #more-41 The Tabletop Explainer is an intermittent educational vlog presenting answers to viewer questions, brief science lessons, and ideas for teachers and students. It is a feature of my blog "Tilts at Windmils" which can be found at http://www.davidcola russo.com/blog/ Display Video Comments | Hide Video Comments | Add Comment Latest comments made on this video: Hurry up and post ... By: SuperfuryanimaL01. on 13 Nov 08, 14:14:19 Hurry up and post the third vid, i've got an exam soon lol! well, wheres the ... By: BYMYSYD. on 28 Oct 08, 02:09:10 well, wheres the other video? thanks for the 2 ... By: princessofswanlexia. on 01 Oct 08, 18:19:50 thanks for the 2 uploads! they realy helped me for the first part of my uni course :) no i believ e we r ... By: 13248396. on 17 Sep 08, 17:43:00 no i believ e we r not when u see light from a 10 billion light years away galaxy u r i nfact watching has she was that time ago, u have no clue about the present, but that doesnt mean u r in the past because you cant see it , whatever state she is now (death ,shining) its not changed for the fact you can only see her light 10 billion years later.u see the past , but that dont go back to the past. If u watch a video made long ago, just because you r seing it now doesnt make things happen again. eh, you could look ... By: ogo08. on 15 Sep 08, 22:11:15 eh, you could look at it like that philosophically, but you must remember that whatever you are looking at has to wait to see u back. If you are both stationary relative to each other then u have to wait x time to see them, but they have to wait x time as well to see you. So its more of a delay. Plus you could argue that we live in the past because it takes time for our brain to process info. and for it to become real to us. Stupid question: ... By: apollo1268. on 06 Sep 08, 06:46:35 Stupid question: The fact that light is not instantanious means we only see an event after it happens. Since this is true, does it imply that we are not living in the present, but in the past? i liked your two ... By: archaedemos. on 22 Aug 08, 03:33:18 i liked your two videos , and i look forward to seeing the third. (: Prometheus1st, ... By: dcolarusso. on 20 Aug 08, 16:48:25 Prometheus1st, you're getting ahead of the series here. ;) The next video will start to "distort" these graphs. However, to see them actually curve we would need to be discussing General Relativity. My question is one ... By: Prometheus1st. on 18 Aug 08, 19:36:00 My question is one from a purely 'what if' mindset not grounded in hard science. Is it possible, that since both space and time can be thought to be curved, so can all our rigid "graphs" which are always represented in linear fashion? -Or, is that already taken into consideration via the math that keeps me from my fascination of physics? Sorry for my neophyte question in advance. -Regards... each of these ... By: libbeingcool. on 02 Aug 08, 07:22:02 each of these videos are short! they dont cover as much and then i have to go to the next video which takes quite a while it's almost not ... By: Derek0783. on 22 Jul 08, 17:32:28 it's almost not fair being deprived of 3 of 5, 4 of 5, and 5 of 5......i'm always checking to see if they've been added...... Any news? By: UncleKennybobs. on 06 Jul 08, 12:19:10 Any news? Aaagh! I really ... By: fedupx5900. on 26 Jun 08, 11:26:34 Aaagh! I really enjoyed the first 2 parts. Where are the other 3? You have a real talent for explaining things. Great video. Simple ... By: Cosmodot256. on 26 Jun 08, 06:50:14 Great video. Simple and well illustrated. It's almost tragic that some people completely miss the simplicity of this demonstration because they fail to realize how complex the idea really is. I'm currently trying to break down the Lorentz Diagram to relate it to intuition, but so far I've failed. Failure leads to success. I just hope I live long enough to understand more than I do today. Fortunately it only takes a single moment to move from one to the next. Learning and growing! Einstein was muslim ... By: Akillituerk. on 17 Apr 08, 21:29:43 Einstein was muslim! German Philosopher found proofs and casted light into the greatest scientist´s faith. Einstein was´nt jewish like many people think. If you can understand german language watch this movie. This is what many people will not believe. Watch and see, this not a lie! I think in future this video will be translated into english language. Here the link: watch?v=f9bkjPdtr2o&feature=related Please don´t send messages to me. If you got comments send it to the finder of the movie. no it isnt not for ... By: tomanyasses. on 16 Apr 08, 08:34:50 no it isnt not for all observers were do you get this crap your a parrot you leanred shit now you repeat it like a parrot WTF! where are the ... By: Johnnyboy2010. on 21 Mar 08, 11:51:07 WTF! where are the rest?? dam i was getting into it so much good job. keep it up! "Postulate" By: KleenezeOpportunity. on 16 Mar 08, 03:01:19 "Postulate" Hope it's soon, ... By: KleenezeOpportunity. on 16 Mar 08, 02:57:45 Hope it's soon, this is really useful stuff. Where's the rest of ... By: arkor7. on 02 Feb 08, 00:34:01 Where's the rest of the videos? awesome man, ... By: Tomar17. on 12 Jan 08, 18:32:20 awesome man, looking forward to the rest Life's sort have ... By: dcolarusso. on 23 Nov 07, 21:01:39 Life's sort have gotten in the way as of late, but I'm hoping to get to the next installment this Christmas/New Year's. where is 3-5. ... By: Abdulmelik2007. on 22 Nov 07, 19:26:24 where is 3-5. Remember to finish a great thing you start. What? He was ... By: Zevcollins. on 10 Nov 07, 12:45:05 What? He was speaking perfectly clear and coherantly. I understood every single word. Heh, and if you have trouble following a very simple outline of what can be followed logically in the mind of a 5 year old then I think that says it all. wow this is amazing ... By: slateport0. on 25 Oct 07, 02:05:05 wow this is amazing and so interesting! one question though... where the heck are videos 3-5? I have watched the first and second videos... but have yet to find the third through fifth videos. amazing explanations though! I am a high school junior interested in physics... particularly this kind. thanks! -Chase

Could that actually happen? The bus jump from Speed Posted by: dcolarusso Video duration: 242 seconds Transcript: http://www.davidcola russo.com/blog/?p=32 #more-32 The Tabletop Explainer is an intermittent educational vlog presenting answers to viewer questions, brief science lessons, and ideas for teachers and students. It is a feature of my blog "Tilts at Windmils" which can be found at http://www.davidcola russo.com/blog/ Display Video Comments | Hide Video Comments | Add Comment Latest comments made on this video: Please note that ... By: dcolarusso. on 01 Dec 08, 23:49:22 Please note that I'm perfectly fine with posters calling my videos crap, but please be creative in your adjectives. Postings with expletives will be removed. I agree with ... By: FishcakeX. on 29 Nov 08, 00:54:01 I agree with Rubiksfanatic Whatever happen to ... By: BonjoviFan08. on 25 Nov 08, 01:01:36 Whatever happen to that bus? is it in a hall of fame somewhere or does someone own it? Exactly how 'not ... By: teloiv2. on 06 Nov 08, 04:17:54 Exactly how 'not immediate' would it have to be to have no effect on a huge bus travelling through mid-air for about 200 feet? The effect of ... By: Rubiksfanatic1. on 06 Nov 08, 00:41:50 The effect of gravity is NOT immediate. Where have you been for the last couple of decades? look at the making ... By: keevanhotshot. on 13 Oct 08, 00:45:53 look at the making of the movie, they did it without strings and the highway was a ramp, case closed. In -other- other ... By: robopaladin. on 24 Jul 08, 14:18:52 In -other- other words, show me a Los Angeles freeway where cars going 68 mph regularly go airborne, and then I'll believe this jump is possible. If the jump were ... By: robopaladin. on 24 Jul 08, 14:09:14 If the jump were possible, then, even after the gap is filled in with a section of road, any vehicle crossing the section at 68 mph would lose contact with the road at some point. In other words, a road gap jump at a certain speed is only possible if the road is not designed to be safe at that speed. This has bothered ... By: teloiv2. on 29 Jun 08, 18:56:01 This has bothered me more than ANY scene in ANY movie I've EVER seen. Why are we even discussing the possibility of whether it would have made it? The effect of gravity is IMMMEDIATE. The bus's nose would have dipped downward so fast it probably wouldn't have cleared a five foot gap let alone 200 or whatever. Either I'm a fucking idiot or the rest of the movie watching world is!! As the video makes ... By: communitycounts. on 17 Jun 08, 22:56:34 As the video makes clear, it's all based upon your starting assumptions, and if you assume no incline then you are correct, there is no way for it to happen. This is the same conclusion the video reaches actually, but for fun we assume an incline. i saw a thing ... By: qzectyui. on 17 Jun 08, 12:13:47 i saw a thing similar to this on tv where they examined the scene from Speed and did experiments and equations like this - they determined that it was totally impossible, in an earlier scene in the movie you do see the whole road and there is no incline or ramp I will have my ... By: cococacacococaca. on 02 Jan 08, 20:54:07 I will have my midterm physics test next week....ahhhhhhhhh.....its easy but the exame prototype are scaring the hell out me...HEEEEEEEEEEEEEEEEEEEEEEEEEEEEEELPPPPPPPPPPPPP ive noticed a few ... By: boroboy2006. on 07 Nov 07, 16:40:30 ive noticed a few mistakes that wre i the movie like that the shot of the highway all he support beams are visible but if u look at the shadows of them u can notice one is missing and when the bus turns thats very sharp corner the bus has stabilizers awesome explanatory ... By: Defender78. on 07 Jul 07, 23:02:04 awesome explanatory video coool! The movie actually does suggest that an angle in the road may exist. There is a piece of dialogue, "If it's [the gap in the road known to be ahead] an interchange there might be an incline." Of course, the bus is remarkably intact (wheels, structure) from the smack-like landing!! cool. good vid! By: jed350z. on 13 Jun 07, 06:45:47 cool. good vid! I like physics...( ... By: ilove820022002. on 30 May 07, 02:45:36 I like physics...(O.O.B Senior) Nice! very ... By: Forrestthemann. on 27 Mar 07, 22:46:56 Nice! very interesting!

What is the conservation of angular momentum? Posted by: dcolarusso Video duration: 125 seconds Transcript: http://www.davidcola russo.com/blog/?p=28 #more-28 The Tabletop Explainer is an intermittent educational vlog presenting answers to viewer questions, brief science lessons, and ideas for teachers and students. It is a feature of my blog "Tilts at Windmils" which can be found at http://www.davidcola russo.com/blog/ Display Video Comments | Hide Video Comments | Add Comment Latest comments made on this video: your presentation ... By: goerizal. on 21 Oct 08, 18:13:08 your presentation is amazing. thanks. Is this where the ... By: kyle1946. on 05 Apr 08, 02:00:38 Is this where the phrase "the tables have turned" comes from, in the context of a situation where 1 person does something to another person, then the the same thing happenes, but it swithes between the 2 people? awesome!!! By: gigahitme. on 07 Mar 08, 04:44:04 awesome!!! Torque sounds ... By: Zevcollins. on 13 Nov 07, 03:33:25 Torque sounds cooler. ;) By the way, I do ... By: Newtoon. on 27 Jul 07, 11:07:19 By the way, I do not like the first sentence : "Nature conserves spinning" which has no sense to me. There are basic laws in Physics and this is not one and this is why I prefer to you the Coriolis effect in that frame : because Coriolis effect is the direct consequence of Newton's laws. Nature conserve... Newton's laws... ;) Step 2 / the skater ... By: Newtoon. on 27 Jul 07, 11:02:14 Step 2 / the skater takes hands back to the body. The linear speed of hands tend to be slowed down more and more when the skater take the hands back to the body BECAUSE of the efforts of the skater (otherwise the right arm would to go toward the front of him and so forth and the left arm would tend to go toward the skater's back / if no efforts are applied) If you imagine that ... By: Newtoon. on 27 Jul 07, 11:01:18 If you imagine that the angular speed of the vertical axle is fixed (e.g. by a "stubborn" motor), when diminishing the radius, the weights and cable would wind up around the axle ! Was I clear ? What do you think of the idea please ? This explanation has the advantage to not use the term "Angular momentum" and replace it with Coriolis. Where is the point ? I feel that Coriolis is easy to explain without equations or theories of anykind. Step 3/ Application ... By: Newtoon. on 27 Jul 07, 11:01:04 Step 3/ Application of Third Newton law : there must be a reaction to these efforts and this is the acceleration in rotation speed. PS : I talked about "efforts" of the skater but this would work anyway with cables and weights (thanks to cable tension). OK, this is the " ... By: Newtoon. on 27 Jul 07, 11:00:23 OK, this is the "classical" way of explaining things. Let's take the skater : I tend to like another explanation relying on the Coriolis effect and I would like to have your opinion on it. To simplify, let's assume that hands are "weights" and arms have no mass. Step 1 / the skater has hands far from her body and hands are going fast in linear speed (at instant "t"). great vid ^_^ By: macchesney. on 20 Jul 07, 11:15:54 great vid ^_^

Re: America's Single Greatest Challenge? - You Choose '08 Posted by: dcolarusso Video duration: 198 seconds My reply to Romney's You Choose '08 Spotlight posting. I borrow heavily from a recent blog posting of mine http://www.davidcola russo.com/edblog/?p= 27 See all the replies to Romney: http://www.youtube.c om/video_response_vi ew_all?v=c70pGVmh5IE Display Video Comments | Hide Video Comments | Add Comment Latest comments made on this video: I recently ... By: Invad3r. on 08 Jan 08, 05:22:40 I recently graduated from the drudgery that is public high school, and I wish I'd had more teachers like you. Rather, I wish I'd had teachers who could afford to deviate from teaching the test. My school was a "target school" under NCLB. Improvement definitely doesn't start with meaningless multiple-choice tests--that is, it starts from the bottom up. Better training, better pay, better teachers. Sounds simple enough, but why can't we get it right? yeah...spelling... ... By: nigelartist. on 14 Dec 07, 01:35:11 yeah...spelling...arithmetic! Cool, you should ... By: dcolarusso. on 06 Nov 07, 14:59:32 Cool, you should check out my science vids. Hey Mr.Colarusso, ... By: everscamp. on 06 Nov 07, 00:27:41 Hey Mr.Colarusso, its weird to see you on youtube. (its Noah, from lexplorations two summers ago) You definetely suck ... By: viktorzd. on 05 Nov 07, 06:19:48 You definetely suck cock I completely agree. ... By: abpianoman. on 19 Oct 07, 15:15:03 I completely agree. If we pay teachers more, education will gradually improve To fix Education is ... By: friendsofthefruitsof. on 25 Sep 07, 01:01:12 To fix Education is simple: Pay the teachers well. a real Competitive rate, Shrink class size to no more than 20. and make completion of High School mandatory. Emphasize Reading Writing and Arithmatic- and spelling :P. David your Holy Cow ... By: SCOOTERBALLUSA. on 23 Sep 07, 16:16:41 David your Holy Cow pension is over-rated. They took the airline pilot pension and they won't stop with your pensions. CD-Rom education and motivations, getting kids thru the crime scene called the education institution. GED them early circumvent the dummies from the failures and get them thru the drudge called High School Crime cells...... Here is a good book ... By: thetruth073. on 21 Sep 07, 20:56:38 Here is a good book to read for a teacher or a parent "The Underground History of American Education" By Former New York State & New York City Teacher of The Year, John Taylor Gatto. This is why they do not give a financial education in the system. So no one knows how it works besides the few selected. Search for "Federal Reserve Fraud" on Google Video. You will see why the Education system was designed to fail. It is to keep society dumb so corporations and government can control! So why would Ron ... By: thetruth073. on 21 Sep 07, 20:44:07 So why would Ron Paul make the Best President for America? - He will Stop The War Immediately - He Will Change Foreign Policy - He will Eliminate the IRS - He Will Eliminate Corporate & Political Corruption - Retore Rights to the People that have been stolen by the Corporations and corrupt politicans! - Unite Americans What has Dr. Ron Paul done? find out ronpaul2008 . com / about (remove spaces) LIVE FREE OR DIE! Vote RON PAUL 2008 Some how we need to ... By: KamikazeKoscki. on 11 Sep 07, 06:08:30 Some how we need to restore honesty, character, conscience, and courage! I totally agree ... By: KimKinMIA. on 14 Aug 07, 21:56:40 I totally agree with you and hope the future holds new promise for dedicated educators. I'd like to add to your discussion the need for a bifurcation in our education system. Not every student is cut out for college or desires to go. We need to prepare them for their futures as well with life skills,internships,training etc The world will always need good mechanics, plumbers,etc and the system should respect this and prepare them as well. Many children are being "left behind" Our public ... By: Sobekain. on 02 Jul 07, 10:02:33 Our public educational system definitely needs a lot more support from our government! The problem with ... By: Mattes50A05. on 19 Jun 07, 07:23:06 The problem with the public school system is the government got too involved with it. Like you said beurocrats with no teaching experience are making decisions in the education system. Also the reason private schools and universities in America are so renowned is because there is actually competition for jobs and teachers are paid based off of ability and credentials. This isn't true for public schools. The only way to fix public schools is through government deregulation. I agree, we need ... By: xiaosainzboy. on 01 Jun 07, 01:13:09 I agree, we need better schools. I am in middle school and in a gifted program, but I am surrounded by many failing people. These people will go on being only semi successful or failures and this needs to be changed. David, I wish my ... By: red5llaw. on 18 May 07, 01:42:38 David, I wish my kids had teachers like you. My Wife and I have had to work hard to "supplement" the public education my kids are receiving. I am proud to say my 3 Kids are in the top 5% of their school academically in a school of over 1000 students. My Son has been chosen for the advanced (Extension) program at high school having one the Academic Award on graduation. Education is PARAMOUNT. Mr. Colarruso, do ... By: nsc5. on 07 May 07, 15:22:25 Mr. Colarruso, do you feel prosrams like No Child Left Behind might be effective if incentives were geared toward rewarding successful teachers rather than penalizing already failing schools? Do you think teacher oriented incentives could stave off the malaise that seems to set in over a teacher's career and help reverse the downward trend we see in so many districts around the country? Access to ... By: guslingus. on 30 Apr 07, 07:25:25 Access to information, or Education, is now worldwide. Those who have ability and the drive can now educate themselves. The world is becoming a level playing field and the ones to be hurt most will be the ones at the top. Only military influences or restrictions to resources will stop this trend. Ten points for you passionate concern for the topic. further to previous ... By: guslingus. on 30 Apr 07, 07:18:06 further to previous... Source materials and equipment and find global markets all from a tiny run down office. It is the hunger for a better life that drives them like no other group i have seen. I think that Global ... By: guslingus. on 30 Apr 07, 07:17:25 I think that Global information technology, is in many ways, reducing the power of formal education. I have worked with people in China who have successful busines's developed, almost entirely, from gaining the specific knowledge they require from the internet. They see an opportunity, study the latest specific information they need. you are wonderful ... By: disneydiva21. on 26 Apr 07, 21:02:23 you are wonderful .. i wish i had a teacher like you when i was in highschool hugs This is part of my ... By: dcolarusso. on 19 Apr 07, 00:59:11 This is part of my concern, these incentives (market forces) are for the most part absent from secondary public schools. There is effectively no difference in salaries between mediocre and magnificent teachers. Universities may not have this problem, but secondary schools do, and I hope you're not insinuating my good-faith suggestions stem from a lack of economic mobility on my part, esp. considering you mentioned an alma mater of mine in your post. Address the argument, not the man. I think that's a ... By: dcolarusso. on 19 Apr 07, 00:53:38 I think that's a psychogenetic fallacy. It's worth noting I became a teacher to work on the central problem of our time--the maintenance of an educated electorate capable of deliberative democracy. That's what PUBLIC education is about. Additionally, I disagree about the market forces at play. Since there is no precise quantitative measure of educational quality, schools have a hard time operating in a market. They are a business with an ill-defined bottom line. Wages are low for ... By: leopold007. on 18 Apr 07, 19:26:49 Wages are low for overage professors, but nothing holds you back to be above overage or change occupation. Move to schools like Harvard etc and you get 6 digits. You do not qualify, well then qualify or stop complaining. It's all supply and demand. To hope for more just because you are a teacher will not work in a free market and is unfair to the others. There is a non monetary benefit or the number of teachers would decrease increasing the wages of those left. Supply and demand my friend This barrier causes ... By: leopold007. on 18 Apr 07, 19:06:41 This barrier causes inequity - crime bye illegal immigrants can not work but need to survive (prostitution, drugs, etc.), high medical cost do to barriers for experts, hate toward US for not share its wealth and expensive wars to silence those objecting. If immigration were balanced by FREE MARKET government (higher tax income) as well as citizen (lower prices of services and goods) would benefit. Less wars and more money could be spend on education.

Re: Senator McCain - Community Counts - You Choose '08 Posted by: dcolarusso Video duration: 133 seconds Counts: http://www.community counts.us Display Video Comments | Hide Video Comments | Add Comment Latest comments made on this video: Democrates over the ... By: spiritman90. on 08 Mar 08, 03:07:51 Democrates over the past years have : Legalize abortion captured and freed osama bin ladin suppiled terroist with weapons of "self defence" ruined the economy (this was just in clintons term) what democrats want to do fall out of iraq open our borders to terrosts raise taxes and make taxes baised on income conclusion : DEMOCRATS SUCK MCCAINE FOR PREZ '08 MCCAINE FOR PREZ '08 By: spiritman90. on 08 Mar 08, 02:59:37 MCCAINE FOR PREZ '08 The Republicans ... By: dodiligens. on 07 May 07, 14:03:29 The Republicans have bankrupted the government, allowed for the gutting of regulations over industries that put profit over public health and safety, distorted the threats to the US to seize ever widening powers, facilitated the promotion of torture as policy, blurred the separating line between church and state, increased the danger of Islamic fundamentalism, and demonized the opposition to the point that working together becomes a political liability. Shame on them all. Obviously the ... By: j0eg0d. on 30 Apr 07, 19:25:54 Obviously the candidates are hesitant to speak freely amongst us and that's a real concern. I know we could encourage the candidates to be more open with us, but I'm very open to creating pressure so they have to do this. McCain doesn't like the internet - I would love to change his opinion of it, but we're alone against those that would rather give him low ratings above original feedback. I prefer the term " ... By: dcolarusso. on 30 Apr 07, 19:18:00 I prefer the term "encourage," but yes, I'm in touch with people outside. What I find most compelling is the fact that Community Counts is a user generated solution to a perceived community problem. At present, 8 of McCain's approved replies include links to Community Counts in their descriptions. This only works if the community wants it to. So please leave a comment for Senator McCain. I like your idea ... By: j0eg0d. on 30 Apr 07, 17:40:11 I like your idea David. I also think it would be a good idea to involve the media with the changes we seek to represent here. I've emailed a few news sites in regards to the exposure and lack of political feedback here. Perhaps you could encourage people from your website to push this issue onto various news organizations so we can force our politicians into opening better dialogue with us. well dont worry, I ... By: digitalbrian. on 29 Apr 07, 02:32:41 well dont worry, I am not a citizen so I cant vote anyways :) I'm sorry you feel ... By: dcolarusso. on 29 Apr 07, 01:12:14 I'm sorry you feel that way. I, for one, would rather give it a go then give up. Participating in ... By: dcolarusso. on 29 Apr 07, 01:09:55 Participating in the Spotlight is an attempt on the candidates' part to appear accessible. This may be self-serving, but it establishes an implicit agreement that they're listening to the engaged community, in this case YouTube. So if a large enough set of the community calls for them to answer a specific question they risk alienating the very community they are trying to win over. We can leverage this to help change the dynamic. It doesn't have to be a waste of time if we work together. Just for clarity's ... By: dcolarusso. on 29 Apr 07, 01:01:39 Just for clarity's sake, was that directed at me? stop rambling fag ... By: SwingingDemon. on 28 Apr 07, 23:57:41 stop rambling fag ass The candidates dont ... By: digitalbrian. on 28 Apr 07, 19:11:43 The candidates dont care, they just want to get rich, they already know that America is out of control and cant be rules by anyone, no matter how many good intentions a candidate have there are more oposing those ideas. so why bother? waste of time That's a really ... By: DickGhostmoon. on 28 Apr 07, 17:16:07 That's a really good idea. Your video's now up ... By: dcolarusso. on 28 Apr 07, 11:55:16 Your video's now up. It seems they're simply slow to approve. There is a typo in ... By: dcolarusso. on 28 Apr 07, 10:15:27 There is a typo in McCain's tags "20008" instead of "2008." If you search this, you'll find at least 7 replies that haven't been approved. Let me think about how we can make a fuss. John McCain is the ... By: TheoVanDerDeer. on 28 Apr 07, 05:13:38 John McCain is the only candidate who has denied my response. He is no straight talker. The candidate ... By: EasyMath. on 27 Apr 07, 20:52:09 The candidate cannot be pinned down. I'd say it "defied ... By: dcolarusso. on 27 Apr 07, 20:21:22 I'd say it "defied description," hence "overpopulation." ;) Do you think my ... By: wogsland. on 27 Apr 07, 18:15:56 Do you think my question was softball or delivered with tongue to far in cheek to be taken seriously?

Announcing the 2007 Phylm Prize, Winner of my $100 Posted by: dcolarusso Video duration: 155 seconds http://www.phylm.com It was very close. To see the winner, watch the video. ;) Display Video Comments | Hide Video Comments | Add Comment Latest comments made on this video: Tao clearly ... By: ubermench42. on 16 Jun 07, 11:05:21 Tao clearly deserved to win, what would mankind have done had he not discovered that water repels fire? LOL! Great tribute ... By: RogCBrand. on 07 Jun 07, 00:22:16 LOL! Great tribute to those videos!

The 2008 Election, 1000 Subscribers, and Happy Halloween Posted by: dcolarusso Video duration: 596 seconds http://www.twittervo tereport.com http://www.866Our Vote.org http://www.BigDia log.org http://www.youtub e.com/videoyourvote< br /> I talk about the above websites and how they play into the election. I thank all of my subscribers for getting me to 1000, and, oh ya, it's Halloween. Display Video Comments | Hide Video Comments | Add Comment Latest comments made on this video: your welcome By: nosiriwonthaveapples. on 03 Nov 08, 02:31:32 your welcome I'm really hoping ... By: dcolarusso. on 03 Nov 08, 02:18:31 I'm really hoping to get part three of relativity out over new year's. That being said, I did put out the celestial navigation video a few months ago. ;) Thanks for subscribing. I subscribed for ... By: nosiriwonthaveapples. on 03 Nov 08, 02:00:08 I subscribed for the cool science. been a while By: nosiriwonthaveapples. on 03 Nov 08, 01:59:28 been a while ya i totally ... By: dylf14. on 02 Nov 08, 17:47:20 ya i totally understand. i try doing these projects as hobbies but the i get busy and eventually loose intrest. Thanks. I keep ... By: dcolarusso. on 02 Nov 08, 14:47:46 Thanks. I keep planning to make more, but life keeps getting in the way. ;) hey man good vids.. By: dylf14. on 02 Nov 08, 13:19:59 hey man good vids.. Wow...haven't seen ... By: thkaal1. on 01 Nov 08, 00:35:20 Wow...haven't seen you do anything in...well...forever.

Re: Breaking Our Dependence on Oil? - You Choose '08 Posted by: dcolarusso Video duration: 197 seconds http://www.community counts.us My reply to Senator Biden. Community Counts is a mashup of YouTube's You Choose Spotlight and is a netroots campaign to have the presidential candidates answer our questions, not theirs. View the candidates' videos. Post replies, but most importantly, vote for the videos you want answered. Display Video Comments | Hide Video Comments | Add Comment Latest comments made on this video: The answer is 2 ... By: 3lricofM3lnibon3. on 17 Nov 08, 13:32:51 The answer is 2 part.....1. heating and cooling houses 2. Using electric cars. We need an extreme makeover on every house in america, rebuilding every house with a passive solar design and active solar collectors. This would cut heating and cooling by 80-90%. Electric cars need to be hybrids with both batteries that we can charge at night and fuel cells so we can add more fuel for long trips. The answer is 2 ... By: 3lricofM3lnibon3. on 17 Nov 08, 13:32:50 The answer is 2 part.....1. heating and cooling houses 2. Using electric cars. We need an extreme makeover on every house in america, rebuilding every house with a passive solar design and active solar collectors. This would cut heating and cooling by 80-90%. Electric cars need to be hybrids with both batteries that we can charge at night and fuel cells so we can add more fuel for long trips. but thats only ... By: Shangrily. on 05 Nov 08, 02:35:15 but thats only breaking our dependence on foreign oil, not just oil in general OHHHHHHH yes it ... By: dggfhdfghdf. on 21 Oct 08, 01:57:48 OHHHHHHH yes it does! the minute word gets out that we r drilling, other countries will have 2 lower their price per barrel! (ppb) INDEFINITELY!!! doesn't really help ... By: Shangrily. on 21 Oct 08, 01:36:14 doesn't really help allot... Drill in our own ... By: dggfhdfghdf. on 28 Apr 08, 06:14:01 Drill in our own land. ALASKAAAAAAAAA! David the Methane ... By: SCOOTERBALLUSA. on 24 Dec 07, 16:31:30 David the Methane in your high school from humans could fuel your electrical for your high school utilities. The Truth is the Oil Extortionists must hang on the gallows just like Saddam. Dave they will take your holy cow pension to pay off our debt to our less faithful comrades in less Loving American Countries. yea ethanol.... ... By: JHH89. on 24 Jul 07, 01:52:30 yea ethanol....great idea: Waste incredible amounts of corn while most of the thrid world starves to death. Anyone realize that it takes cheap energy first (i.e oil) to manufacture, transport, and basically create an entire infrastructure centered around ethanol. What it comes down to is not the next thing we can shove in our gas tank but fundamentally altering our perception of energy and making the transition to a less consuming lifestlye that is known as the "american way of life" also please remove ... By: pcockriel. on 04 Jul 07, 11:02:27 also please remove this question after you answer please I have a Question. ... By: pcockriel. on 04 Jul 07, 11:00:12 I have a Question. what would happen (in your opinion) to our economy if a real free energy device was built? and do you think I should stop trying to invent one? will I be helping everone so there is no wars or will I mess up a lot of Jobs Help I need your opinion. we can implement ... By: dewpep. on 30 Jun 07, 17:26:25 we can implement ethanol as much as possible to give us an alternative and flexibility to respond to global oil politics. I am willing to accept 15% less mileage in honor of our troops protecting us. If the real price of gas included the military protection - a gallon would cost $7.00 / gallon. subsidise ethanol now but implement weening it off funding over time. hold on eyrothtath: ... By: dewpep. on 30 Jun 07, 17:23:55 hold on eyrothtath: I support ethanol but we must underdstand its weaknesses and provide accurate information. Its not about a plastic gas tank - its a complete fuel system resistant to the solvent issues of ewthanol. Although ethanol has a higher occtane - it has 15% less fuel economy. We dont have enough corn to supply all usa. ..but.....(next post) Well, it's still ... By: whistler8. on 16 Jun 07, 18:13:47 Well, it's still not exactly 100%. Though we may have the capacity to supply all cars with Ethanol (Álcool), Gas still goes strong in Brazil. What has effectively changed is related to the manufacturing of Flex fuel cars (gas-ethanol). But even that hasn't been applied to 100% of the new cars. One word.... ... By: Eyrothath. on 05 Jun 07, 22:25:32 One word.... Ethanol.. Couple bucks cheaper, can produce more of it, cleaner and gives of oxygon, more miles to the gallon.. The Ethanol plants already are spitting out, how can spit out billions of barrels a year but the market is not buying it.. You do not see it at your local gas station.. Ethanol runs in any car with a plastic gas tank, most new cars have them.. And it is easy to convert.. Brazil has gone 100% Ethanol.. Why don't we? Why just one video? ... By: shighsmi. on 04 Jun 07, 02:05:24 Why just one video? How about a few? I felt the same way ... By: dcolarusso. on 03 Jun 07, 23:45:45 I felt the same way last week. You should subscribe to the reply videos at Community Counts dot US. It's a new feature I just added. Look for the orange "Subscribe button." Good thing I ... By: Razela. on 03 Jun 07, 23:42:16 Good thing I watched your video before I made my own this week. I was originally going to talk about adding a tax to oil to make up for the external costs of oil dependence, which is pretty close to what you are talking about. Heh, next week I'm just going to have to make my video quicker than you make yours. There's also ... By: hibbaejibbae. on 01 Jun 07, 21:27:01 There's also something to be said for energy and economic diversification. One of the great advantages that humans, and cockroaches, have over other creatures is that we eat a varied diet. If one source of food suddenly becomes unavailable, we can eat something else. Animals that rely on a specific source of food die if it goes away. Existing ... By: hibbaejibbae. on 01 Jun 07, 18:03:31 Existing infrastructure is also a big factor in this case. Good video. I ... By: hibbaejibbae. on 01 Jun 07, 17:36:06 Good video. I would add is that oil based technology is the entrenched technology. New technologies often have difficulty competing with well entrenched technologies even if they are superior. Start up costs, economies of scale, product familiarity, marketing dollars, and political influence all favor an established industry. In addition, large industries can sometimes cannibalize competing industries; buy them out simply to eliminate them. The auto industry is notorious for this. People seem to ... By: jofairy75. on 01 Jun 07, 15:47:38 People seem to think finding a new energy source is the answer to the problem. The solution to reducing dependency on oil lies not in the invention of new technologies, but in changing our approach to consumerism. We simply can not continue to exist the way we do in a 'Throw Away Society'. No one is interested in the 'inconveniences'this will cause which is why all the talk about the environment at the moment amounts to little more than a pile of rhetorical bullshit. excellent video, ... By: davisfleetwood. on 01 Jun 07, 04:00:40 excellent video, david. i do hope you succeed in convincing a candiate to repsond directly to an individual video as determined in the community counts page. i found huckabee's response completely detached- just awful. If Joe Biden wants ... By: docadv. on 01 Jun 07, 01:12:05 If Joe Biden wants to help he should fight to subsidize such an effort similar to our current subsidizing of oil good video....too ... By: docadv. on 01 Jun 07, 01:11:47 good video....too bad technology hasn't banded people together enough to create an instant market for more energy efficient products. i.e. sign up here if you would be willing to have solar panels installed on your roof if they could replace your entire need for electricity at a cost of $5000. with 1 million upfront contracts and boom, youve justed flipped the market and created a model for mass production...therefore making it possible to economically compete with nonrenewable energy. I argue if the ... By: dcolarusso. on 31 May 07, 16:24:09 I argue if the market is broken we must fix it. Governments are obliged to step in when the market doesn't account for all costs, in this case, geopolitical and environmental. So we must give the market the information it needs to solve these problems. This means overcoming the myopic vision of corporations through the inclusion of government-imposed corrections. I'm not making the argument you think I'm making, such intervention hardly seems to fall under your implied bias.

Re: Barack Obama YouTube Spotlight Posted by: dcolarusso Video duration: 180 seconds http://www.community counts.us Display Video Comments | Hide Video Comments | Add Comment Latest comments made on this video: "We the people" are ... By: Cosmodot256. on 26 Jun 08, 06:56:13 "We the people" are corporations and we're also supposed to run the government. Propaganda is beginning to control the people that fail to realize that we depend on these corporations who run our country. If we penalize corporations, we only hurt ourselves. The cost is transfered to us. Free market enterprise is the basis of our economy and it's the force which has built us into the most powerful and influential nation in the world. It's a shame more ... By: kirbyvile. on 14 Apr 08, 03:49:30 It's a shame more teachers aren't like you : / Man, I wish more ... By: Bazil. on 25 Jun 07, 04:45:30 Man, I wish more teachers were like you seem to be. out of my entire highschool there are only a handfull of teachers that care for what thye teach or know anything out side there feild. will do By: alyceclover. on 24 Jun 07, 22:40:01 will do I think public ... By: icecube557. on 23 Jun 07, 18:47:17 I think public school are bullshit. If you pay 200 dollars you can get a years worth done in 2 months. Community Counts is ... By: dcolarusso. on 19 Jun 07, 18:24:39 Community Counts is a mashup of the YouChoose Spotlight. To be included, a candidate has to have a week in the Spotlight. Why didn't include ... By: mersimilliaykij4471. on 19 Jun 07, 15:25:02 Why didn't include Ron Paul on community counts? RON PAUL 2008 5 stars, We the ... By: KamikazeKoscki. on 16 Jun 07, 08:35:04 5 stars, We the people of America should be listen too and we the people are responsible for guiding congress and the President, not corporations and government. Whao watch out ... ... By: DCxxRay. on 15 Jun 07, 21:43:38 Whao watch out ... we have a smart physics guy on our hands. the problem with ... By: mizcat106. on 15 Jun 07, 02:10:24 the problem with most teachers is that 1) they teach to adults not to kids, they need to remember what its like to be younger 2) they teach in one style, the most succesful teachers are those that can explain things different ways, using analogies and pictures and different strategies 3) they don't care, if you get it, they love u. if you don't get the first time, well screw u, that's ur problem Who is Ron Paul? He ... By: fatetaker3rd. on 14 Jun 07, 23:31:50 Who is Ron Paul? He has never voted to raise taxes. He has never voted for a federal restriction on gun ownership. He has never voted to raise congressional pay. He has never taken a government-paid junket. He has never voted to increase the power of the executive branch. He voted against the Patriot Act. He voted against regulating the Internet. He voted against the Iraq war. He returns a portion of his annual congressional office budget to the U.S. treasury every year. Knowledge is power! Or clone David! He ... By: RogCBrand. on 14 Jun 07, 23:18:13 Or clone David! He seems like a dedicated teacher! : ) Definitely - I tell ... By: j0eg0d. on 14 Jun 07, 20:08:33 Definitely - I tell young people that the college teaching method is completely different than what they've grown up with. I would like to get these college professors interested in teaching public schools by offering them the same job structure offered through college teaching. I think that's ... By: j0eg0d. on 14 Jun 07, 20:05:57 I think that's actually the focus of the Public School System. By comparison; I know that it works differently for those in private schools. Also, our society ... By: RogCBrand. on 14 Jun 07, 19:59:21 Also, our society often tells kids that doing well in school and being interested in learning is to be a geek, which is considered a bad thing! There's something really messed up about a culture that looks down on intelligence and wisdom! In school I ... By: RogCBrand. on 14 Jun 07, 19:57:20 In school I remember my Trigonometry teacher getting upset with me because most of the class couldn't understand what he was attempting to get across, so I jumped up to the blackboard and managed to make it clear to everyone. He was a nice guy, but his teaching style was to regurgitate what the text book said in a monotone delivery. I loved math & science, but when I had a bad teacher it made learning harder. With a great teacher you can get kids to learn things they aren't even interested in! YES - For myself ... By: j0eg0d. on 14 Jun 07, 19:39:59 YES - For myself and the friends I grew up with. It wasn't really that we couldn't do math, but that we were uninterested. I didn't find a fondness for mathematics until I was much older. So I do tend to blame that apathy on the school system. I have a niece refusing to understand math and I'm trying to show her the fun rather than the strict discipline which forces math on her. Very well said ... By: RogCBrand. on 14 Jun 07, 18:50:11 Very well said David. I get very frustrated when I see kids, but especially adults, who are not only ignorant of science, history and current events, but apathetic. We can't expect a government that works if the citizens aren't involved and informed! As for responding to citizens, I can't see how any candidate could justify not having time to communicate directly with a handful of those they want to vote for them!

Second Annual Phylm Prize--Submissions due July 1, 2008 Posted by: dcolarusso Video duration: 68 seconds Vote: http://www.community counts.com/phylm Rules: http://www.davidcola russo.com/phylm/2008 _phylm_rules.pdf The Second Annual Phylm Prize aims to spark the creation of high-quality engaging physics media for the world wide web. Display Video Comments | Hide Video Comments | Add Comment Latest comments made on this video: Wooow, can't wait ... By: GaryKoji. on 07 Apr 08, 14:28:20 Wooow, can't wait to enter! *scribble scribble* mabey someone will ... By: Qtyled. on 07 Apr 08, 14:24:38 mabey someone will do one in the competition... but less the cool animations lol! I am waiting ... By: similisan. on 07 Apr 08, 10:54:05 lol! I am waiting for it, too ;) finish relativity. By: BernierCR42. on 07 Apr 08, 04:36:44 finish relativity.

Re: Who's Your Hero, YouTube? - You Choose '08 Posted by: dcolarusso Video duration: 103 seconds http://www.community counts.us My reply to Congressman Hunter--Charles Dale. Community Counts is a mashup of YouTube's You Choose Spotlight and is a netroots campaign to have the presidential candidates answer our questions, not theirs. View the candidates' videos. Post replies, but most importantly, vote for the videos you want answered. Display Video Comments | Hide Video Comments | Add Comment Latest comments made on this video: Thanks Matthew. ... By: dcolarusso. on 20 Oct 08, 00:11:24 Thanks Matthew. I'll let my grandfather know that. That was uplifting ... By: MatthewFlynn. on 13 Oct 08, 22:38:13 That was uplifting to hear someone talk about a real American Hero. Dan brown, pogobat ... By: windnoob. on 26 Sep 08, 19:49:37 Dan brown, pogobat on youtube. Not to degrade ... By: brainboie1. on 17 Sep 08, 00:21:55 Not to degrade myself in any sort of manner--but, I'd like to declare that the individual, founded in the middle of the picture [respectively, to the right (our right) of the surveying device], looks slightly similar to Owen Wilson. The picture I am referring to can be found at the 0:32/1:34 mark. :) I just thought it'd be nice to make that subjective declaration, when necessary. Enjoy yourself. I find it quite ... By: brainboie1. on 17 Sep 08, 00:18:50 I find it quite uplifting that you are able to connect with your relatives, respectively your grandfather. I, however, am not so gifted whereas my 'true' grandfathers have either died or gone amiss--out of the lives of my family. Truthfully, I'd have to declare my 'Hero' as my teachers. Essentially, I am referring to the respective assigned professionals that have taught subjective curriculum to me in the past; however, I am mainly referring to my parents. They have shaped me to what I am. Mr. Dale You are ... By: Prometheus1st. on 18 Aug 08, 19:48:18 Mr. Dale You are rightfully proud of you Grandson David. He had people like YOU to inspire him. I was in the service, and we had to march in parades on Memorial day, and that always ticked me off, that we...the soldiers, should have to 'work' on that day. in meeting some of the folks who saved our future back in WWII, i was inspired to think differently about that day, and came to think of it as my day to "Celebrate" my contribution and our way of life. I urge you to tell us your stories. an hero By: riorio23. on 18 Jul 08, 20:13:53 an hero Go Gramps! tell us ... By: paulatwe. on 19 Jun