Sunday, 24 November 2013

Albert Einstein: The Theory of Relativity.

In his lifetime, Einstein discovered, formulated and theorized many solutions to problems related to physics.  Solutions to some of these problems were known as:  The theory of Relativity;  Wave-Particle-Duality; Quantum theory; and Statistical Mechanics.

     In 1907, by using his applications of special relativity, Albert Einstein discovered that E=MC  .   In the equation, E=MC , E represented energy, M the mass, and C the speed of light.  This discovery (E=MC ) would revolutionize the study of physics and change the conventional thinking of the relation between the speed of light, mass, and energy. 
     More than half a century later, this simple formula would alter the course of human history, by ending world war II, with the explosion of atomic bombs above Hiroshima and Nagasaki.  The atomic bomb was the practical application of Einstein's theory of Relativity.  Little did Einstein know when he was a young physicist, that his theory of relativity would fifty years later bring the dawn of the nuclear age.                   

     Einstein's theory of relativity changed the thinking regarding some basics theories of physics.  Prior to this theory of relativity no one understood that energy  was the product of the mass times the speed of light squared.  Prior to Einstein's discovery, there was no theory showing how, energy, the speed of light, and mass, all relate to each other.  Conventional wisdom stated that the atom and the nucleus of the atom was an indivisible unit.  No one dreamed that splitting an atom of matter could unleash such a tremendous force of energy.  However, in the nineteenth century (1862), James Maxwell wrote the equations of Michael Faraday's theory, that light (energy) consisted of an electric field traveling at right angles to a magnetic field.  In fact, it was upon this "field concept" that Einstein later drew the basis for his Theory of Relativity.[1]
     On July 12, 1887, Albert Michelson and Edward Morley took measurements of the data from their experiment testing their theory on ethers.(Ethers were thought to fill all space and penetrate all matter.)  Many scientists in the world were very curious as to what the outcome of the experiment would bring.  The Michelson-Morley experiment failed.  Two perpendicular light beams sent through mirrors and telescopes took the exact same amount time to make their respective round trips.  Through the failure of the experiment, Michelson and Morley were unable to detect an ether.[2]




     Over the last sixty years there have been numerous applications of Einstein's theory.  The two most striking results
have been the development of atomic and hydrogen bombs, and nuclear power stations.
     Up until several years ago, the fate of the world was controlled by the two superpowers of the U.S. and the U.S.S.R., each with vast quantities of nuclear war-heads aimed at each other.  The political balance between was maintained by the fear of each other's nuclear bombs.
     The other major influence affects us all in a more positive manner.  Here in Thornhill, part of our electrical energy that we consume every day is produced by Ontario Hydro Nuclear reactor stations.  In a country like France, more than half of their electricity needs are provided by nuclear energy.                                       
     Einstein's theory of relativity opened whole new spectrum of thinking for scientists around the world. 
     In 1924, a young Indian physicist, S.N. Bose, set froth a theory in which radiation was treated as a gas of light quanta.   Einstein applied Bose's new statistical idea to develop an analogous theory for an ideal gas of material particles.
     In the same year of Bose's theory, Louis de Broglie wrote a thesis on the parallel between the gas of particles and the gas of light quanta.  This thesis was brought on by using the theory of relativity as the basis of thinking.  This thesis in turn, inspired Einstein to successfully prove the wave-particle duality in 1926.[3]

     Einstein was the copernicus of the twentieth century.  No scientist before or after the life of Einstein has been able to equal his accomplishments.  No other scientist has inspired the world both politically and scientifically so much, influencing the minds of scientists and human beings abroad.  Einstein worked many hours trying to prove the wave-particle duality and quantum physics, however Einstein will forever be known as the mastermind creator of the equation E = MC , or better known as the theory of relativity.   


    [1]. Kahan, Gerald  1983.  E = MC  Picture Book Of Relativity.           New York:  TAB books Inc.  Page 7
    [2]. Kondo, Herbert 1966.  Adventures in space and time.
        New York:  Holiday House.  Page 75-76
    [3].  Hawking, S.W. and Israel, W.  1979.  General Relativity:
         An Einstein centenary survey.  London:  Cambridge Press.

No comments:

Post a Comment