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 |
| Weblink |
https://card2brain.ch/box/20200114_englscience_emc2_book_questions
|
| Embed |
<iframe src="https://card2brain.ch/box/20200114_englscience_emc2_book_questions/embed" width="780" height="150" scrolling="no" frameborder="0"></iframe>
|
Newton said what is lost in energy is compensated by God. Leibniz said that God is so smart that he doesn't have to constantly add energy. He created earth as a perfect world
She measured how deep metal spheres would enter the mud when dropped from a certain height
One reason is that the very geometry of our earth often produces square numbers. Lots of examples in nature, like cars breaking, light falling on an area
It is such a huge number that there is a lot more energy in mass
energy
1905, Annalen der Physik
Radioactive material (Radium, uranium)
A Polish scientist living in France; died of radiation sickness
Because they convert mass into energy
The combining of mass and energy
Through mind experiments, by fantasizing about reality
'
It does not mean that the theory is only relative, or depends on the perspective. It is a complete theory of physical reality and does not change from the perspective of an individual.
He was Jewish and learnt to question authorities from a young age.
He got divorced and found a new partner in Berlin.
He was nice, egalitarian, promoted his assistants
The atom consist mostly of empty space, apart from the nucleus
Because of E=mc2; the mass of the atom is concentrated in a small space in the centre; there must be a lot of hidden energy holding the protons together (strong nuclear force)
English physicist who discovered the neutron
Italian physicist who found out that neutrons can be slowed down so that they connect with the nucleus
Inserting neutrons to nuclei by slowing them down with water
Austrian Jewish physicist; Hahn was a German chemist
She had to leave Germany and direct the experiments from Stockholm
1909: She heard from him about E=mc2
She realised that they were the first to achieve nuclear fission: the splitting of a uranium atom resulting in two particles of Barium and Krypton with a loss of mass
He wanted to warn him about Germany's attempts to build an atomic bomb. He put the letter away and couldn't believe that such a powerful bomb could be built.
The Americans were backward-looking and doubtful, the Germans were looking towards a bright, golden future.
German physicist: He had been working with Jewish scientists.
His mother arranged his release by contacting the mother of Heinrich Himmler, director of the SS.
Physics of E=mc2 and use of heavy water to slow down neutrons
Nothing happened because there was too little uranium.
They took people from the concentration camps who got poisoned.
Spring 1942
Autumn 1941, Manhattan Project
They worked with engineers and chose a sphere structure, while the Germans used flat plates.
Destroy the heavy water supply.
English parachutists were sent with glider planes
but the planes crashed and all English soldiers were captured and killed.
They sent in Norwegian resistance fighters who got to the plant on foot and on cross-country skis and they blew up the heavy water storage tanks.
J. Robert Oppenheimer, a Hungarian physicist (refugee)
