>>510954542
What professors are you talking about? By destroying a photon, I mean that the only way for a photon to interact with anything is to be absorbed by a charged particle. Another photon may be emitted, as in reflection, but in that case you are not going to detect it. The only way to detect a photon is to observe the effect of its energy being imparted on another particle (as in the photoelectric effect), which necessarily requires its absorption and no re-emission.