On the function and the probable origin of Ptolemy's equant
We examine the roles of the equant point and the eccentric deferent circle in Ptolemy's planetary theory. The necessity of these features of the model is demonstrated empirically by a study of the ret...
We examine the roles of the equant point and the eccentric deferent circle in Ptolemy's planetary theory. The necessity of these features of the model is demonstrated empirically by a study of the ret...
Static method for determining the R value of thermal insulation
A steady-state technique for finding the thermal resistance of rigid thermal insulation is discussed. The method, which is suitable for use in the general physics laboratory, can be understood in term...
A steady-state technique for finding the thermal resistance of rigid thermal insulation is discussed. The method, which is suitable for use in the general physics laboratory, can be understood in term...
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Three perspectives on Schrödinger's cat
American Journal of Physics -- December 1984 -- Volume 52, Issue 12, pp. 1089-1093
Issue Date: December 1984
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The resolutions to the paradox of Schrödinger's cat engendered by three major perspectives on quantum mechanics—quantum logic, the many worlds interpretation, and the Copenhagen interpretation—are discussed. The core of each perspective is revealed in the process. Each resolution to Schrödinger's cat has a counterpart which solves the logical paradox known as the unexpected hanging. The rather striking parallels serve to emphasize several points. First, the quantum paradox is an epistemological and not a physical one. Second, the three interpretations mentioned, unlike some others, are faithful to this understanding. And third, the pitfalls in these two paradoxes have a somewhat universal character.
©1984 American Association of Physics Teachers
©1984 American Association of Physics Teachers
| History: | Received 22 December 1983; accepted 20 March 1984 |
| Permalink: | http://dx.doi.org/10.1119/1.13765 |
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