Feynman Lecture One
Here is a link to four Richard Feynman online lectures, and below are notes and an index for the first lecture:
Quantum electrodynamics, "our pride and joy"
Theoretical history of physics is synthesis: laws of motion became theory that explained heat, explained sound as motion of atoms and waves in gas; also the forces between large masses (gravity).
New theory of light, electromagnetic wave...
Rutherford determined that matter consisted of individual atoms, which had tiny cores that were heavy and electrons that traveled around them. if one used newton's theory of gravity to explain why the electrons orbited the nucleus, some things could be explained, but as the theory got more developed, it became apparent that newton's theory as applied to the atom couldn't explain most of the phenomena that we can observe.
When the quantum laws of motion were applied to the electron, it was a tremendous success.
Checker board analogy: it isn't the difficulty of the rules, the rules are simple. it is the multiplicity of its action and interconnection. corner of board, where interactions are simpler, one can predict almost exactly.
If the atom is 100 kilometers, we're measuring at 1cm.
Min. 21-23, the difficulty of understanding. the fun of it is that it is so mysterious. explanation of difficulty, 23-26 (great stuff).
mayan indian analogies 26:30
arithmetic 29:00 and mathematics 31:00
the difficulty of understanding thing in itself, understanding 'why', 31:30.
mayan's reduced to three books,priests burned hundreds of thousands, 32:45
useless to make philosophical arguments about 'why', modern science, 33:45
monchromatic light, light is corpuscular, it is a particle...
probability in light, 42:30, light doesn't see anything on a small scale, 45:50,
can't line light up, 46:50, reduced to probability, 47:20,
nature is cleverer than you are, 48:20,
colors in oil and soap bubbles, reflection between to surfaces 50:05,
bands of reflections, 51:30
newton's rings, 52:40 - 55, interference, 55:15, how does that happen with the odds of photon particle?
the answer of arrows 58:00, crazy, unexplainable, but it works...
probability of an event is the square (area) of an amplitude (an arrow on a plane).
question session is worthwhile, 1:08:30.
Quantum electrodynamics, "our pride and joy"
Theoretical history of physics is synthesis: laws of motion became theory that explained heat, explained sound as motion of atoms and waves in gas; also the forces between large masses (gravity).
New theory of light, electromagnetic wave...
Rutherford determined that matter consisted of individual atoms, which had tiny cores that were heavy and electrons that traveled around them. if one used newton's theory of gravity to explain why the electrons orbited the nucleus, some things could be explained, but as the theory got more developed, it became apparent that newton's theory as applied to the atom couldn't explain most of the phenomena that we can observe.
When the quantum laws of motion were applied to the electron, it was a tremendous success.
Checker board analogy: it isn't the difficulty of the rules, the rules are simple. it is the multiplicity of its action and interconnection. corner of board, where interactions are simpler, one can predict almost exactly.
If the atom is 100 kilometers, we're measuring at 1cm.
Min. 21-23, the difficulty of understanding. the fun of it is that it is so mysterious. explanation of difficulty, 23-26 (great stuff).
mayan indian analogies 26:30
arithmetic 29:00 and mathematics 31:00
the difficulty of understanding thing in itself, understanding 'why', 31:30.
mayan's reduced to three books,priests burned hundreds of thousands, 32:45
useless to make philosophical arguments about 'why', modern science, 33:45
monchromatic light, light is corpuscular, it is a particle...
probability in light, 42:30, light doesn't see anything on a small scale, 45:50,
can't line light up, 46:50, reduced to probability, 47:20,
nature is cleverer than you are, 48:20,
colors in oil and soap bubbles, reflection between to surfaces 50:05,
bands of reflections, 51:30
newton's rings, 52:40 - 55, interference, 55:15, how does that happen with the odds of photon particle?
the answer of arrows 58:00, crazy, unexplainable, but it works...
probability of an event is the square (area) of an amplitude (an arrow on a plane).
question session is worthwhile, 1:08:30.
posted by John Aristides at 2/16/2007 12:36:00 PM
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