What did Einstein invent?

Einstein's major achievements are relativity, photoelectric effect, conservation of energy and cosmological constant.

Theory of relativity

Special relativity and general relativity have been established for a long time. It has stood the test of practice and history and is a recognized truth. Relativity has a great influence on the development of modern physics and modern human thought. Relativity logically unifies classical physics and makes it a perfect scientific system.

photoeffect

1905, Einstein put forward the photon hypothesis and successfully explained the photoelectric effect, so he won the 192 1 year Nobel Prize in Physics. When light irradiates a metal, the electrical properties of this substance will change. This photochromic phenomenon is collectively called photoelectric effect.

conservation of energy

Einstein thought that the mass of matter is a measure of inertia and energy is a measure of motion. Energy and mass are not isolated from each other, but are interrelated and inseparable. The change of the mass of the object will change the energy accordingly; And the change of the energy of the object will change the mass accordingly.

cosmical constant

Einstein used the cosmological constant when he put forward the theory of relativity (in order to explain the existence of a static universe with non-zero density of matter, he introduced a term in the gravitational field equation that is proportional to the metric tensor, which was represented by the symbol λ. This proportional constant is very small and can be ignored at the galactic scale. λ is only meaningful at the cosmic scale, so it is called the cosmological constant.

Extended data

In memory of Einstein

Albert Einstein Prize is an award for theoretical physics. It was first awarded by Princeton Institute of Advanced Studies on 195 1 with a prize of 15000 USD. Later, the bonus was reduced to 5000 dollars. Einstein was a judge of this award.

1955 In August, four months after Einstein's death, the 99th element was named "Einstein" to commemorate Einstein's contribution.

From 1965 to 1978, the US Postal Service issued a set of "American celebrities" stamps, including Einstein, with a face value of 8 cents. 1The asteroid 200 1 discovered on March 5, 973 was named Einstein.

Albert einstein institution in Bonn established and awarded the Albert Einstein Medal. It was first awarded in 1979 to reward people who made outstanding contributions to Einstein's related affairs.

Baidu Encyclopedia-Albert Einstein