science
Storyboard Text
- “Nothing exists except atoms and empty space; everything else is opinion.”
- Democritus was a central figure in the development of the atomic theory of the universe.He theorized that all material bodies are made up of indivisibly small “atoms.”
- Matter, though divisible in an extreme degree, is nevertheless not infinitely divisible.
- John Dalton is best known for his pioneering the theory of atomism.
- A scientific theory is a tool and not a creed.
- In 1897 Thomson discoveredthe electronand then went on to propose a model for the structure of the atom. His work also led to the invention of the mass spectrograph.
- Robert Millikan was a physicist who discovered the elementary charge of an electron using the oil-drop experiment. ... In 1923 Millikan was awarded the Nobel Prize in Physics "for his work on the elementary charge of electricity and on the photoelectric effect."
- Fullness of knowledge always means some understanding of the depths of our ignorance; and that is always conducive to humility and reverence.
- You should never bet against anything in science at odds of more than about 1012 to 1.
- Ernest Rutherford found that the atom is mostly empty space, with nearly all of its mass concentrated in a tiny central nucleus. The nucleus is positively charged and surrounded at a great distance by the negatively charged electrons.
- Anyone who is not shocked by quantum theory has not understood it.
- In 1913, Niels Bohr proposed a theory for the hydrogen atom, based on quantum theory that some physical quantities only take discrete values. ... Bohr's model explained why atoms only emit light of fixed wavelengths, and later incorporated the theories on light quanta.
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