JosephC

//Over time, Einstein’s theory on Relativity has been devolved and questioned but i believe that the theory is in fact true because of the scientific research and tests that are being used now to further understand relativity and are correct, that Einstein’s and Newton’s theory's are very similar, and that it can be explained mathematically as well.//   
 * What Is The Theory Of Relativity?**

Relativity is two theories of physics developed by Albert Einstein. The theories are the special theory of relativity and general theory of relativity. The special theory was published in 1905. The general theory of relativity is the second theory and was announced in 1915. Einstein's theories explain the behavior of matter, energy, and time and space. The two theory developed by Einstein are used in the physics field today. This theory at times can be difficult to understand and has many components. One person can observe that two events happen at the same time, while another person observes that they occur at different times. A clock can appear to one observer to be running at a given rate, yet seem to another observer to run at a different rate. Two observers can measure the length of the same rod correctly but obtain different results. Matter can turn into energy, and energy can turn into matter.     
 * Einstein’s Theory/Scientific Tests and Predictions**

The speed of light is the same for all observer. The laws of physics are the same in any non-accelerated frame of reference. This means that the laws of physics observed by an observer traveling must be the same as those observed by an observer who is stationary in another point of reference. (Theoretical Basis for Special Relativity)

Einstein showed how length and time must change from one observer to another in order to get consistent results for physical quantities. To decide whether his postulates are correct, physicists test whether the predictions of Einstein's theory match observations. Many tests have been made and the answers Einstein gave are right every time.(Special Relativity)

"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." (Special Relativity: The speed of light is the same for all observers)       
 * Einstein vs. Newton**

Einstein's Special Theory of Relativity describes the motion of particles moving at close to the speed of light and gives the correct motion for any moving particle. Newton's laws provide a very good approximate form but the differences between Einstein's laws of motion and those derived by Newton are tiny. Although Einstein’s theory is more in depth than Newton's theory is still provides a very good approximation for objects moving at everyday speeds. (Special theory of Relativity)
 * Using Mathematics**

"For non-relativistic objects Newton defined momentum, given the symbol //p//, as the product of mass and velocity -- //p = m v.// When speed becomes relativistic, we have to modify this definition -- //p = gamma (mv"// "Einstein also showed that the correct relativistic expression for the energy of a particle of mass m with momentum //p// is //E2 = m2c4 + p2c2//. This is a key equation for any real particle, giving the relationship between its energy (//E)//, momentum ( //p)//, and its rest mass (//m)//."

The measurable effects of relativity are based on gamma. Gamma depends only on the speed of a particle. Gamma is always larger than 1. By definition. (special relativity, Gamma)



"For example, when an electron has traveled ten feet along the accelerator it has a speed of 0.99//c//, and the value of gamma at that speed is 7.09. When the electron reaches the end of the linac, its speed is 0.99999999995//c// where gamma equals 100,000. What do these gamma values tell us about the relativistic effects detected at SLAC? Notice that when the speed of the object is very much less than the speed of light (//v// << //c//), gamma is approximately equal to 1. This is a non-relativistic situation (Newtonian)." (Gamma)

//There are many equations that physicists use to prove that relativity is true. They use them in tests and base it off of each other. When used in the proper formula physicists can prove there theories to be true thus proving that relativity is in fact true.//

**In Summary**

//After doing more research on the subject of relativity I have come to the conclusion that it is possible through advancements in technology and research, the similarities between Einstein’s theory of relativity and Newton’s theory on the law of motion, and also the fact that it can be explained mathematically. This is certainly enough to come to many conclusions proving that Einstein’s theory is correct.// **Works Cited**

"Theory: Special Relativity (SLAC VVC)." __SLAC Public Website Server__. 31 Oct. 2008. 5 Feb. 2009 **[|.

** // Explains the special Relativity background and Einstein’s theories. It includes the theatrical basis of relativity, info on the first postulate, Relativistic Definitions, gammas, momentum, and energy. The cite is credible because the cite is indorsed by and operated by Stanford University for the U.S department of energy and the SLAC National Accelerator laboratory in CA. //

"NASA - Relativity." __NASA - Home__. 29 Oct. 2007. 5 Feb. 2009 .

// This cite includes and is not limited to the following: Relativity, Galilean relativity, Undetectable motion, Inertial frames, Galilean transformations, The Michelson-Morley experiment, Special relativity, Time dilation, and General relativity ect. . .Contributor: Michael Dine, Ph.D., Professor of Physics, University of California, Santa Cruz..

Updated last 2/5/2009 HHS//