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E=mc2 Time and Relativity special theory of relativity 2

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Uploaded by on Oct 22, 2007

Einstein showed, mathematically, that space and time are related and perceived differently by different observers. One consequence of special relativity is time dilation, which means that time in a moving reference frame passes more slowly than time in a stationary reference frame. In other words, a clock that is moving with respect to a stationary observer is perceived by the observer to run more slowly than a stationary clock. Another consequence is length contraction—the observed decrease in length of objects traveling relative to an observer. As part of the special theory of relativity, Einstein also reconceived our understanding of momentum and energy. As the speed of an object approaches the speed of light, its inertia, or resistance to acceleration, also increases. In other words, its mass increases. Additionally, the theory yielded the famous equation E=mc2, which expresses the relationship between energy and mass.

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  • lol husein bolt will outlive us all

  • the point is that time isn't constant because time doesn't exist, time is just our perception of change, and our perception of change is relative. the only constant is the speed of light

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  • why is it that if we are busy time seems to travel so fast but if we are not doing something it takes so long for the time to passed.

  • Your claiming work can be performed by this rock in front of me if I multiply the mass of the rock by the speed of light squared. Once I solve the equation and write it down what how much work can I do with a number?

    The best thing I can think of is use my energy to pick up the rock and through it in the general direction of insane people that think a rock can perform work with their calculators.

  • Why does the light travel different distances in the visual representation? I still don't understand the concept, it seems.

  • @TheCoolfez Note that it is still a theory. There's a logical contradiction : Nothing is constant, not in energy and matter. So if nothing is constant, and light is matter, then I can conclude that light, including the speed of it, is not constant.

  • He would be asian.

    Beautiful explination, i finally get it.

  • Ha Ha explain this GIJ,J=0

  • EXCELLENT!!!! You have hit the mark!!!!! you are right! and your close to understanding time travel Einstein realized this in his theory... it is proof of it's existence... If you were able to **Travel** at the speed of light squared and be able to bend time and have the ***Energy*** to re~integrate in theory you would be able to step through walls with dense **Mass**

  • So that explains why when you witness a car accident it looks like its in slow motion even though it happened very quickly. Or you see a plane moving very slowly across the sky even though its travelling at 600+mph. Everythings relative. So if you travel faster than the speed of light, time stands still and will start counting backwards and you would be travelling backwards through time. That would then mean both time and speed cancel each other out. So therefore if nothing moved would timestop?

  • Light does not ever slow down for anything, it is perpetual--always going the same speed even when it bounces of objects, it never slows...

    only time does-it warps. can space warp ? yes

    when light is absorbed after turning off a light in a room, it is no longer light ? no it is not, the fequency is changed and it goes from its omitted state of strait motion before, back to a form of heat.

  • Light does not ever slow down for anything, it is perpetual--always going the same speed even when it bounces of objects, it never slows...

    only time does-it warps. can space warp ? yes

    when light is absorbed after turning off a light in a room, it is no longer light ? no it is not, the fequency is changed and it goes back from its radiated state of motion.

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