Can a photon attract another photon?
56079
Do two beams of light attract each other in general theory of relativity?
81503
Do photons truly exist in a physical sense or are they just a useful concept like $i = \sqrt{-1}$?
31554
Does waving a magnet around create light?
121321
Lasing in a 2-Level system?
14989
In quantum mechanics, given certain energy spectrum can one generate the corresponding potential?
2191
Is there a maximum amount of photons that can exist in a certain amount of space?
103322
How can a red light photon be different from a blue light photon?
157497
During reflection does the emitted photon have same properties?
97734
Is communication possible with entanglement?
132454
Has a free neutron ever been shown to absorb/emit/interact with a photon?
99735
Are there any theoretical limits on the energy of a photon?
1537
Is a photon "fixed in spacetime"?
8099
Does a photon exert a gravitational pull?
86156
Do photons have a duration?
48690
Does a photon interfere only with itself?
109743
Is a single photon always circularly polarized?
59601
Application of Heisenberg's uncertainty principle on photons