The discussion centers around the calculation of the speed of light in different mediums, exploring the effects of various materials such as air and water on light's velocity. Participants reference concepts like the index of refraction and the implications of light's behavior in different contexts, including theoretical and practical aspects.
Participants express conflicting views regarding whether the speed of light changes in different mediums, with some asserting it remains constant while others argue that it does change. The discussion remains unresolved with multiple competing perspectives presented.
There are unresolved assumptions regarding the definitions of "speed of light" and "photons," as well as the implications of the index of refraction and quantum electrodynamics on the discussion.
You mean the speed of photons remains unchanged. The speed of light (not photon) changes in mediums because photons are absorbed and reemitted by atoms.jeesusfreek said:nopers, the speed of light remains unchanged through all medium.
the frequency also remains unchanged through all medium, and therefore its wavelength as well.
the only thing that changes with the index of refraction is the angle of refraction i.e. the angle at which light leaves the object in relation to the angle at which it entered the object.
That's just wrong; wavelength and speed do change. This is necessary to understand optics, lenses, etc. As for the OP, to calculate and correctly understand "why" the speed changes would seem to require quantum electrodynamics.jeesusfreek said:nopers, the speed of light remains unchanged through all medium.[..] and therefore its wavelength as well.