JafeeW

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1879 a genuis was born by the name of Albert Einstein a professor a nobel prize in phyiscs came up with the law of photoeletric effect. At of all his inventions and ideas his most famous one is the theroy of relativity. The theroy is that space and time are relative concepts rather than absolute concepts. **The three most important terms number one is the speed of light. Newton’s laws are important. Last and real important the essence of gravity.** The speed of light is a very intresting thing you cant see it but its their.They say nothings impossiable well it is impossiable to travel tha speed of light.The exact speed that light is going is 299 792 458 m / s. Einsteins theory says in a vaccum speed of light is always the same. It is said that if you look at the speed of light in a black hole the speed is slower and if you look away it looks faster. Here's an example i got from my second cited website, If I am driving down the freeway at 50 miles per hour relative to the road, a car traveling in the same direction at 55 mph has a speed of only 5 mph relative to me, while a car coming in the opposite direction at 55 mph approaches me at a rate of 105 mph. Their speed relative to me depends on my motion as well as on theirs.======

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Gravity when strong bends space and slows time. I was reading this article that stated wacthes run faster on a building top then on the ground. Because being from the center of the earth gravity fields are weaker. In einsteins theroy gravity is not look at as a force but as a space time geometry.======

[[image:http://www.pbs.org/wgbh/nova/einstein/images/rela-anim-space.jpg width="235" height="172" caption="Space animation"]]
Lightman, Alan. "NOVA | Einstein's Big Idea | Relativity (Lightman Essay) | PBS." __PBS__. 5 Feb. 2009 . This site is realiable because the author is a well known author who is realiable and it was on PBS.

"Theory: Special Relativity (SLAC VVC)." __SLAC Public Website Server__. 31 Oct. 2008. 5 Feb. 2009 . This site is realiable because it has most of the formulas