"In follow up question #2, how momentum of photons is conserved when light enters glass and again when it leaves it? Does photons become more massive as they enter refractive medium which slows its speed?"
The Expansion Rate Of The Universe Is Increasing
What Was Before The Big Bang?
Random Light Fields
Difference Between Velocity And Acceleration
What Is Magnetic Field Energy?
What Is An Object?
The Moon's Surface Is Not Smooth
Relativistic Doppler Effect
Transformer With Varying Dc Current
Spins In A Stern-gerlach Experiment
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