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Comment on A One-way Speed of Light Experiment

Rodrigo de Abreu
Vasco Guerra
Year: 2009
Keywords: relativity, speed of light
A recent paper published in Am. J. Phys. describes an experiment designed to measure the one-way speed of light.1 Although the experiment is very interesting, in particular to be used in student laboratories, it is in fact determining the two-way speed of light.