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QuoteRef: feynRP_1985

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ThesaHelp:
references e-f
Group:
philosophy of science
Topic:
physics
Topic:
quantum electrodynamics
Topic:
law of nature
Topic:
physics as computation
Topic:
chemistry
Group:
science
Topic:
education
Topic:
scientific method
Topic:
sense perception
Topic:
light
Topic:
quantum mechanics
Topic:
probability
Topic:
atoms and molecules

Reference

Feynman, R.P., QED. The strange theory of light and matter, Princeton, New Jersey, Princeton University Press, 1985. Google

Quotations
7 ;;Quote: quantum electrodynamics describes all physical phenomena except gravity, radioactivity and nuclear physics; there is no significant difference between experiment and theory
7+ ;;Quote: quantum electrodynamics is the theory behind chemistry; and biologists seek a chemical explanation of life
11 ;;Quote: easily explain how physicists predict natural phenomenon, but not how they do it efficiently; e.g., explain subtraction by removing beans
10 ;;Quote: for physicists, common sense, esthetics, and simplicity are irrelevant; a theory gives predictions that agree with experiment
10+;;Quote: quantum electrodynamics describes Nature as absurd
14 ;;Quote: light is made of particles called photons; can be individually detected
14 ;;Quote: 5 or 6 photons will activate an eye's nerve cell; if a single photon, would see flashes of equal intensity, i.e., particles
38 ;;Quote: light appears to reflect from one point of a mirror because that is where many possible paths take nearly equal time
38+;;Quote: quantum mechanics: determine the probability of an event by squaring the sum of the arrows for each way an event could happen
54 ;;Quote: light doesn't only travel in a straight line; it "smells" the neighboring paths through a small core of nearby space; e.g., a very small mirror scatters light instead of reflecting it
56 ;;Quote: the uncertainty principle is a side effect of quantum mechanics; the true view is the addition of probability amplitudes for all the ways an event can happen
75 ;;Quote: physics students often identify a photon with the arrow that represents the probability amplitude; but these arrows only define the probability of an event
84 ;;Quote: in 1910, physists thought of atoms as miniature solar systems with electrons orbiting the nucleus; this is no longer valid
85 ;;Quote: electrons behave like photons; on a large scale they travel like particles; inside an atom, there is no orbit, only all sorts of ways that the electron could go along with a probability amplitude for each way
85 ;;Quote: all electrical and light phenomena arise from photons and electrons moving from place to place and from electrons emitting and absorbing photons
85+;;Quote: each event in quantum electrodynamics has a probability amplitude; compute from the ways the event could have happened
100 ;;Quote: an electron is kept within a certain range of the nucleus by photon exchanges with protons
101 ;;Quote: light is scattered by the electrons inside a piece of glass and new photons are emitted; equivalent to back- and front-surface reflections

Related Topics up

ThesaHelp: references e-f (168 items)
Group: philosophy of science   (10 topics, 406 quotes)
Topic: physics (51 items)
Topic: quantum electrodynamics (34 items)
Topic: law of nature (28 items)
Topic: physics as computation (31 items)
Topic: chemistry (11 items)
Group: science   (45 topics, 1960 quotes)
Topic: education (35 items)
Topic: scientific method (42 items)
Topic: sense perception (55 items)
Topic: light (46 items)
Topic: quantum mechanics (103 items)
Topic: probability (21 items)
Topic: atoms and molecules (57 items)

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