Why doesn’t the block between B and D absorb the photon a third of the time, since it should have the same modulus as the detectors? What’s so special about things that tell us that they’ve been hit by a photon?
Why doesn’t the block between B and D absorb the photon a third of the time, since it should have the same modulus as the detectors? What’s so special about things that tell us that they’ve been hit by a photon?