What quantum mechanical effect allows light to gain it's speed when it moves from another medium back into air/vacuum?
32879
How does light speed up after coming out of a glass slab?
85582
Why aren't all photons virtual particles even in the "vacuum" of empty space?
8077
Photons in expanding space: how is energy conserved?
134172
Photons acting as carriers of both attractive and repulsive forces
12597
Does the speed of medium affect the path of light?
21069
What happens to photons after they hit objects?
81158
Light "diode" and 2nd law of thermodynamics
65973
How are classical optics phenomena explained in QED (Snell's law)?
103401
Can someone explain in a simple manner that How can we use Quantum entanglement to transfer data instantly when we seperate photons?
119953
What is the meaning of speed of light $c$ in $E=mc^2$?
8048
How does one account for the momentum of an absorbed photon?
7332
Is the double-slit experiment typically carried out in a vacuum?
31825
Why are objects at rest in motion through spacetime at the speed of light?
101152
Can vacuum fluctuations change the position of an electron?
10025
Why does wavelength change as light enters a different medium?
24863
How can gravity affect light?
91385
Does quantum mechanics allow faster than light (FTL) travel?