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1 Special Theory of relativity

2 General Theory of relativity

The theories of relativity are too complex to be explained here .

3 Photo electric effect

Einstein proved that light has both a particle nature and wave nature.He thus, laid the foundation of Quantum Mechanics. The details of this theory will not fit into this page.

4 Einstein's refrigerator

The only product Einstein invented was an absorption refrigerator that used no electricity.He developed it in 1926 with former student, Leo Szilard in 1926. Designed for use in under developed countries, it had no moving parts and operated only with a heat source. It is also the only product patented by Einstein (1930 in US).

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12y ago

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