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Most people believe that Albert Einstein won the Nobel Prize for his famous work on the theory of relativity. But he actually received the award for his discovery of the laws of the photo electric effect.
discovery Einstein
Einstein won a Nobel in physics in 1921. Photo electric effect is a phenomenon in metals emit electrons from their surface when the light shines on them. Einstein explained this phenomenon as follows:
– Light consists of small particles called photons. They carry energy in proportion to the frequency of the light. – When light shines on the metal, electrons absorb energy from photons and they get rejected due to the energy difference. This causes the electrons to flow.
discovery led Einstein to understand that light behaves as both a particle and a wave.
Applications
Detecting photo electric effect led to the development of solar cells, now useful as an alternate source of energy for us. Similarly photo diodes are other programs that find wide use in light detection in the field of fiber optic, telecommunications and other fields.
World year of physics
1905 delegates. a very important year in physics with four groundbreaking works by Albert Einstein in that year
These four publications are:
1) the photo electric effect
2) Brownian motion
3) Special Relativity
4) The famous mass and energy equation E = MC2
These publications especially special theory of relativity completely changed physics in recent years. Mass and energy equation led to the development of the atomic bomb as well as constructive nuclear energy. Highlighting the importance of 1905 as an important milestone in physics, 2005, it was recognized as the world year of physics at the occasion of the 100th anniversary of Einstein’s writings.
subsequent years
In later years, Einstein also added another publication ‘general theory of relativity “and won the unified field theory of his. The general theory of relativity was not accepted by many at the time that he published in 1915. The terms and calculations behind the theories were quite complex and it was not understood by many. He suggested that his calculations can be verified at a solar eclipse. After several years, the eclipse, observations were reported that proved his theory right. This made him even more famous.
mass energy Einstein’s equation was used to develop an atom bomb. Einstein was not involved in making the bomb. He spoke against the war and continued to use the technology peace until his death in 1955.
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