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Transcript: Albert Einstein was the most famous scientist of the twentieth century and perhaps of all time. The man who invented the theories of special and general relativity was an unconventional scientist who spent most of his career outside the mainstream. His Greek teacher at high school famously said, “Einstein will never amount to much.” Einstein failed his college entrance exams twice and was only able to get admission to a teachers’ college. Eventually he worked in the Berne patent office where he gestated his famous theory of relativity. Einstein won the Nobel Prize in 1905 not for his famous theories of relativity but for his explanation of the photoelectric effect. Even late in his career Einstein did not take part in the establishment process of science. He was a loner for most of his life. He became a cultural icon late in his career when he moved to the United States and worked at the Princeton Institute for Advanced Studies. He was consulted by the president, Roosevelt, over the issue of the atomic bomb. Einstein and a number of other scientists strongly petitioned that it not be used and not even be developed. Einstein died as a cultural icon perhaps the only scientist recognizable to most members of the public.
Transcript: Earth’s atmosphere is unique within the solar system mostly because of the nitrogen and oxygen that form the bulk of the Earth’s atmosphere: 75 percent nitrogen, 20 percent oxygen, plus carbon dioxide, argon, water vapor and other trace gasses. The weather on the Earth is generated...
Published 07/20/11
Transcript: The ancient Greeks knew about loadstones. These were curtain rocks which, when suspended in a fluid, would appear to line themselves in response to a mysterious force. That mysterious force was magnetism, first understood through the experimentation of the physicist Michael Faraday....
Published 07/20/11
Transcript: Cratering affects the evolution of planets. The cratering history of the Earth has varied over its history. Cratering was much stronger in the first half billion years when there was plenty of debris left over from the formation of the solar system. When you look at the Moon we are...
Published 07/20/11