Topic: quantum mechanics
Topic: science as measurement
Topic: discrete vs. continuous
Topic: special relativity
Topic: quantum electrodynamics
Topic: physics
Topic: metaphysics and epistemology
Group: philosophy of science
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Reference
Heisenberg, W.,
"Uber den anschaulichen inhalt der quantenttheoretichen kinernatik und mechanik",
Zeitschrift fur Physik, 43, pp. 172-198, 1927.
Google
Other Reference
as "The physical content of quantum kinematics and mechanics," p. 56-84 with commentary in Wheeler, J.A., and Zurek W. H. (ed.) Quantum Theory and Measurement, Princeton New Jersey USA: Princeton University Press, 1983
Quotations
58 ;;Quote: only the theory itself can decide what is and is not observable
| 58 ;;Quote: quantum mechanics has indeterminacy relations where mechanical variables are associated in conjugate pairs
| 59 ;;Quote: complementarity is particle-wave duality applied to indeterminacy relations; indeterminacy ensures the internal consistency of each extreme view
| 59+;;Quote: momentum-energy indeterminacy refers to particles while space-time indeterminacy refers to waves
| abstract ;;Quote: the statistical relations of quantum mechanics are due to the indeterminacy of conjugate quantities such as momentum and energy
| 63 ;;Quote: processes are discontinuous in small regions and short times; it is clearly meaningless to speak about one velocity at one position
| 64 ;;Quote: the product of location precision and momentum precision is proportional to Plank's constant
| 68 ;;Quote: concepts of classical, physical theory have an exact analog for atomic processes; but, conjugate quantities suffer an indeterminacy purely by the observational procedures
| 68 ;;Quote: the word "simultaneous" requires the speed of light; sharper definitions are not possible; a constant speed of light does not contradict concepts of position, velocity, and time
| 76 ;;Quote: consider reflection of a beam of electrons at a grating; if we know where an electron hits, its velocity must be so high that its de Broglie wavelength is much smaller than the grating, yielding classical reflection
| 82 ;;Quote: quantum-theoretical quantity is a matrix whose diagonal is the classical value with nondiagonal terms as the uncertainty
| 83 ;;Quote: the laws of conservation of momentum and energy hold exactly in quantum mechanics
| 83+;;Quote: "When we know the present precisely, we can predict the future" is not the conclusion but the assumption; observation is a selection that limits what is possible; quantum mechanics establishes the final failure of causality
| 83 ;;Quote: physics should only describe the correlation of observations; there is no real world with causality
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Related Topics
Topic: quantum mechanics (103 items)
Topic: science as measurement (36 items)
Topic: discrete vs. continuous (47 items)
Topic: special relativity (73 items)
Topic: quantum electrodynamics (34 items)
Topic: physics (51 items)
Topic: metaphysics and epistemology (99 items)
Group: philosophy of science (10 topics, 406 quotes)
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