I have a question about how the double-slit-with-detector experiment works out with a beam of light. (1) When you fire electrons through the double-slit apparatus, it creates an interference pattern on the screen. (2) When you place a detector at one of the slits, the interference pattern is ruined and you just get two corpuscular bands. My question is: Does the same thing happen with light? I know that light does create an interference pattern under double-slit conditions (1). But if you place the same kind of detector (2) at one of the slits when light, rather than electrons, is streaming through -- does the interference pattern get collapsed into two corpuscular bands? An additional question: Can somebody please point me in the direction of a peer-reviewed paper offering evidence of the phenomenon under discussion, in which the presence of a detector collapses the interference pattern of electrons? Everyone talks about it, but I want to be able to reference something substantive. One more question: Does the double slit experiment produce similar results with electrically neutral particles (excluding photons). Come to think of it, are there any fundamentally electrically neutral particles, that aren't composed of more primary charged particles? Many thanks!