RL & SST
This lecture talks about Einstein and the Theory of Relativity.
For thousands of years, people believed that universe was absolutely fixed and unchanged. This has been transformed by Einstein in the 20th century. He suggested the universe was under continuously dynamic change. Actually, this theory was not proposed by Einstein, but by astronomer called Hubble.
Einstein developed the theory of relativity, one of the two pillars of modern physics (alongside quantum mechanics).:274 Einstein’s work is also known for its influence on the philosophy of science. Einstein is best known by the general public for his mass–energy equivalence formula E = mc2 (which has been dubbed “the world’s most famous equation”). He received the 1921 Nobel Prize in Physics “for his services to theoretical physics, and especially for his discovery of the law of the photoelectric effect“, a pivotal step in the evolution of quantum theory.
Near the beginning of his career, Einstein thought that Newtonian mechanics was no longer enough to reconcile the laws of classical mechanics with the laws of the electromagnetic field. This led him to develop his special theory of relativity during his time at the Swiss Patent Office in Bern (1902–1909), Switzerland. However, he realized that the principle of relativity could also be extended to gravitational fields and—with his subsequent theory of gravitation in 1916—he published a paper on general relativity. He continued to deal with problems of statistical mechanics and quantum theory, which led to his explanations of particle theory and the motion of molecules. He also investigated the thermal properties of light which laid the foundation of the photon theory of light. In 1917, Einstein applied the general theory of relativity to model the large-scale structure of the universe.
1、Imagination is more important than knowledge.
2、Logic will get you from A to B, imagination will take you everywhere.
3、Joy in looking and comprehending is nature’s most beautiful gift.
4、Try not to become a man of success, but rather try to become a man of value.
5、If you can’t explain it simply, you don’t understand it well enough.
6、When the solution is simple, natural law is answering.
7、A question that sometimes drives me hazy: are I am or the others crazy?
8、Isn’t it strange that I who have written only unpopular books should be such a popular fellow?
9、Small is the number of people who see with their eyes and think with their minds.
10、The most incomprehensible thing about the world is that it is comprehensible.