Hostname: page-component-586b7cd67f-rcrh6 Total loading time: 0 Render date: 2024-11-23T22:28:39.101Z Has data issue: false hasContentIssue false

Special Relativity Without One-Way Velocity Assumptions: Part II

Published online by Cambridge University Press:  14 March 2022

John A. Winnie*
Affiliation:
University of Hawaii

Abstract

The Reichenbach-Grünbaum thesis of the conventionality of simultaneity is clarified and defended by developing the consequences of the Special Theory when assumptions are not made concerning the one-way speed of light. It is first shown that the conventionality of simultaneity leads immediately to the conventionality of all relative speeds. From this result, the general-length-contraction and time-dilation relations are then derived. Next, the place of time-dilation and length-contraction effects within the Special Theory is examined in the light of the conventionality thesis. The slow-transport method of synchrony is then examined in the light of these results and is shown not to provide an adequate method of uniquely determining the one-way speed of light. Finally, the general -Lorentz transformations for events along the x-axis are derived from three principles : the round-trip light principle, the principle of equal passage times, and the linearity principle. These principles are shown to be independent of one-way velocity assumptions, and thus may form the basis of a Special Theory of Relativity without simultaneity assumptions.

Type
Research Article
Copyright
Copyright © 1970 The Philosophy of Science Association

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Footnotes

Part I of this article appeared in the immediately preceding issue (Vol. 37, No. 1) of this journal.

References

[1] Arzeliès, Relativistic Kinematics, Oxford, 1966.Google Scholar
[2] Bondi, H., Relativity and Common Sense, 1962.Google Scholar
[3] Born, M., Einstein's Theory of Relativity, Dover Pub., New York, 1962.Google Scholar
[4] Bridgman, P. W., A Sophisticate's Primer of Relativity, 1962.Google Scholar
[5] Edwards, W. F., “Special Relativity in Anisotropic Space,” American Journal of Physics, vol. 31 (7), 1963, pp. 482489.CrossRefGoogle Scholar
[6] Einstein, A., “On the Electrodynamics of Moving Bodies,” in The Principle of Relativity, New York, 1962, pp. 3765. Originally published in Annalen der Physik, vol. 17, 1905.Google Scholar
[7] Einstein, A., Relativity: The Special and General Theory, 16th edit., New York, 1961.Google Scholar
[8] Ellis, B. and Bowman, P., “Conventionality in Distant Simultaneity,” Philosophy of Science, vol. 34 (2), 1967, pp. 116136.CrossRefGoogle Scholar
[9] Grünbaum, A., “Logical and Philosophical Foundations of the Special Theory of Relativity” in Philosophy of Science (eds. Danto and Morgen besser).Google Scholar
[10] Grünbaum, A., Philosophical Problems of Space and Time, New York, 1963.Google Scholar
[11] Grünbaum, A., “Reply to Hilary Putnam's ‘An Examination of Grünbaum's Philosophy of Geometry’,” Boston Studies in the Philosophy of Science, vol. V (eds. R. S. Cohen and M. Wartofsky), Dordrecht, 1969.CrossRefGoogle Scholar
[12] Grünbaum, A., Prologue and Epilogue to [4], pp. vii f. and 165-191, respectively.Google Scholar
[13] Grünbaum, A., “Simultaneity by Slow Clock Transport in the Special Theory of Relativity,” Philosophy of Science, vol. 36 (1), 1969, pp. 543.CrossRefGoogle Scholar
[14] Helliwell, T. M., Introduction to Special Relativity, Boston, 1966.Google Scholar
[15] Kacser, C., Introduction to the Special Theory of Relativity, 1967.Google Scholar
[16] M⊘ller, C., The Theory of Relativity, Oxford, 1952.Google Scholar
[17] Reichenbach, H., Axiomatik der Relativistischen Raum-Zeit-Lehre, Brunswick, 1924.Google Scholar
[18] Reichenbach, H., The Philosophy of Space and Time, New York, 1957.Google Scholar
[19] Salmon, W., “The Conventionality of Simultaneity,” Philosophy of Science, vol. 36 (1), 1969, pp. 4463.10.1086/288235CrossRefGoogle Scholar
[20] Van Fraassen, B., “Conventionality in the Axiomatic Foundations of the Special Theory of Relativity,” Philosophy of Science, vol. 36 (1), 1969, pp. 6473.CrossRefGoogle Scholar