3 ms·
It basically means round-trip tests where the source of light and the detector are the same, and the light reflects back from a mirror. One-way would be having
by bitvoid 3y ago
It basically means round-trip tests where the source of light and the detector are the same, and the light reflects back from a mirror. One-way would be having the source send the light to the detector directly, but the problem with testing that way comes down to synchronizing the clocks of the source and detector.
I don't know anything about this, I just found a Wikipedia page [1]
1: https://en.m.wikipedia.org/wiki/One-way_speed_of_light https://en.m.wikipedia.org/wiki/One-way_speed_of_light
- marcosdumay 3y agoOh, ok. Yeah, the one thing we tested again and again is that if there is any difference on the speed of light going and coming back, it must average to the same thing in every direction (actually in every circuit, with any number or directional changes). There are some experiments that measure one-way speed even on the link you posted. The first measurement of the speed of light was one-way. Those are just low precision ones.