Published 2014-11-01
Keywords
- Speed of light,
- Crucial experiment,
- Auxiliary Hypotheses,
- Theory-Ladenness
- Velocidad de la luz,
- Experimento crucial,
- Hipótesis auxiliares,
- Carga teórica
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Abstract
In his Discorsi, Galileo claims to have performed an experiment to determine whether light takes time in propagating from one place to another. In this paper I take that experiment as crucial between the rival hypotheses of finite and infinite speed of light. I contend that, in spite of Galileo's negative result, such a crucial experiment is possible, both in principle and in practice. I then argue that it employs reasonable auxiliary hypotheses. I conclude that a positive result in a Galileo-type experiment would refute the hypothesis of instantaneous propagation of light and verify the hypothesis of finite velocity. However, a negative result is always compatible with the two rivals, and consequently, the hypothesis of finite velocity is not refutable by any possible experience.
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