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Einstein's Special Theory of Relativity E=mc2 speed of light
http://www.myspace.com/acorvettes
The steps Einstein took to develop his special theory of relativity are as follows: First, Einstein tried to understand what must be implied by the fact that light travels at a speed independent of its source. From this, he realized that time and space are not simply two unrelated concepts; rather, they must be linked in a space-time system whose properties appear most dramatically when objects move very fast and are observed by two different observers moving with respect to one another. His final and greatest step led him to discover and clarify mathematically many new things about the world that are important in each and every frame of reference.
In each and every frame of reference, there are relationships that hold because of the nature of space and time. If space and time were to be reconceived in a new interactive way, then other things, like momentum and energy, had to be reconceived, too. In fact, momentum and energy are linked like space and time.
Length: 425
Rating: 4.70 (327 ratings)
Tags: Einstein Theory of Relativity
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Simultaneity - Albert Einstein and the Theory of Relativity
Imagine two observers, one seated in the center of a speeding train car, and another standing on the platform as the train races by. As the center of the car passes the observer on the platform, he sees two bolts of lightning strike the car - one on the front, and one on the rear. The flashes of light from each strike reach him at the same time, so he concludes that the bolts were simultaneous, since he knows that the light from both strikes traveled the same distance at the same speed, the speed of light. He also predicts that his friend on the train will notice the front strike before the rear strike, because from her perspective on the platform the train is moving to meet the flash from the front, and moving away from the flash from the rear.
But what does the passenger see? As her friend on the platform predicted, the passenger does notice the flash from the front before the flash from the rear. But her conclusion is very different. As Einstein showed, the speed of the flashes as measured in the reference frame of the train must also be the speed of light. So, because each light pulse travels the same distance from each end of the train to the passenger, and because both pulses must move at the same speed, he can only conclude one thing: if he sees the front strike first, it actually happened first.
Whose interpretation is correct - the observer on the platform, who claims that the strikes happened simultaneously, or the observer on the train, who claims that the front strike happened before the rear strike? Einstein tells us that both are correct, within their own frame of reference. This is a fundamental result of special relativity: From different reference frames, there can never be agreement on the simultaneity of events.
Length: 123
Rating: 4.80 (451 ratings)
Tags: Science Physics Simultaneity Albert EinsteinTheory of Relativity
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*relativity: "Marilyn"
"Marilyn" is a part of project *relativity by Drzach & Suchy. http://www.DrzachSuchy.ch/relativity
It is based on the technique of Shadow Casting Panels, invented by Drzach in 2004.
Length: 74
Rating: 4.80 (32 ratings)
Tags: shadow art marilyn monroe manson technology design relativity
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Relativity - The Train Paradox (Time Dilation and Length Contraction)
The train paradox is a famous example of the strangeness of relativity. Demonstrates just how non-intuitive reality can be.
Described here by Professor Richard Muller of the University California, Berkeley. Taken from Lecture 22 of the spring 2006 webcasts of Physics For Future Presidents. Also known as Descriptive Introduction to Physics. Empahsis is on conceptual understanding, rather than mathematics.
Full lecture:
http://www.youtube.com/watch?v=nNgzqpKZwhE
All Lectures:
http://www.youtube.com/view_play_list?p=095393D5B42B2266
Length: 415
Rating: 4.80 (127 ratings)
Tags: Relativity Einstein physics science paradox lightspeed Lorentz spacetime university Richard Muller
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General relativity & Gravity
A clip from the series 'The Elegent Universe' regarding some aspects of General Relativity and gravity. More info- http://archive.ncsa.uiuc.edu/Cyberia/NumRel/GenRelativity.html http://en.wikipedia.org/wiki/Introduction_to_general_relativity
Length: 510
Rating: 4.90 (96 ratings)
Tags: einstein general relativity gravity newton classic physics
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Physics 10 - Lecture 22: Relativity
Physics 10: Physics for Future Presidents. Spring 2006. Professor Richard A. Muller. The most interesting and important topics in physics, stressing conceptual understanding rather than math, with applications to current events. Topics covered may vary and may include energy and conservation, radioactivity, nuclear physics, the Theory of Relativity, lasers, explosions, earthquakes, superconductors, and quantum physics. [courses] [physics10] [spring2006] Credits: lecturer:Professor Richard A. Muller, producers:Educational Technology Services
Length: 3355
Rating: 4.90 (96 ratings)
Tags: physics 10 science education webcast uc berkeley cal course class
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