2 ms·
> This will require measuring a velocity change in the speed of light of <50 cm/s and more likely 10-20 cm/s (1 part in 3 × 10^9). Can someone explain to me wh
by panki27 3y ago
> This will require measuring a velocity change in the speed of light of <50 cm/s and more likely 10-20 cm/s (1 part in 3 × 10^9).
Can someone explain to me why the speed of light changes?
- perihelions 3y agoIt doesn't; that language is garbled. It's the velocity of the star they're observing that changes by several cm/s. This translates to a Doppler shift in the starlight being detected: a change in its frequency and wavelength. see also https://en.wikipedia.org/wiki/Doppler_spectroscopy https://en.wikipedia.org/wiki/Doppler_spectroscopy
- panki27 3y agoThank you! I was massively confused there for a second.