Re:Starlink is now Accepting General Pre-orders
by Tuna-Fish on Thursday February 18, 2021 @02:42AM
(#26177092)
> 3.33 us per km
Signals in fiber do not travel at c. They travel at lightspeed in glass. Light speed in a material is c/(the refractive index of the material). For commercial glass fiber, 1.5 is a reasonable estimate for it's refractive index. So the actual time for 1 km is ~5 us.
Signals in fiber do not travel at c. They travel at lightspeed in glass. Light speed in a material is c/(the refractive index of the material). For commercial glass fiber, 1.5 is a reasonable estimate for it's refractive index. So the actual time for 1 km is ~5 us.