EnglScience E=mc^2 Book Questions
Questions and Answers to the questions from the script
Questions and Answers to the questions from the script
Set of flashcards Details
| Flashcards | 110 |
|---|---|
| Language | English |
| Category | English |
| Level | University |
| Created / Updated | 14.01.2020 / 25.10.2020 |
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How the equation controls how stars 'work' and how life will end.
The sun is made up of 66% iron.
Every element gives off a distinct visual signal: spectroscope breaks the spectrum of electromagnetic radiation into various wavelengths
University of Cambridge (England), no doctorate for women, went to Harvard, wrote a Ph.D.
She re-interpreted the spectroscope lines (different amount of ionization at different temperatures): the sun consists mostly of Hydrogen
They didn't believe it at first, but four years later it became accepted.
4 Hydrogen atoms fuse to one helium atom, releasing lots of energy in the process
How were the different elements on earth created?
Implosion of stars create immense temperatures, squeeze larger nuclei of elements together
Atomic bomb design (implosion of Plutonium bomb)
Radioactive blasts at the core of the earth, high temperatures which lead to continental shifts and earthquakes
Atomic bomb, submarines, reactors (power stations), smoke detectors, glowing exit signs, PET scans, C-14 clock (archaeological dating)
Hydrogen will burn out in 5 billion years, helium sun expands, too hot on earth, Helium will burn out, Earth will cool, and the sun will lose its gravitational pull, earth will fly away
Black hole
Earth will fly away from sun and be swallowed up by a black hole.
E=mc2, the formula
Not about Einstein, not a biography
Equation had a large part in the race for a nuclear bomb.
He was poor. He was married with two children. They had to give the first child up to adoption. He worked as a clerk in the Bern patent office.
He got average to good results. He had a conflict with the professor.
In his office: He had a drawer with his notes. All the research was theoretical.
German physics journal: Annalen der Physik.
Bookbinder
He bound the lecture notes he took for Davy and gave the book to him
First, he gave him a job as a lab assistant and supported him, but later he was jealous of his success
He had no formal education
He believed in circles from his religion and had no training in Newtonian physics (forces depicted in straight lines)
Electrical engine; summer of 1821
In a closed system, the amount of energy stays unchanged.
There is energy in mass itself. The amount of energy and mass is always the same.
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