link to short online paper describing the experiment (good article, clearly-written):
i almost get it (& it is intriguing). but i still have a few questions right where the experiment has reached a certain stage: specifically, that's where a light bulb is introduced into the glass chamber in an attempt to track which slit the electrons pass through. after mentioning this change to the apparatus the author then adds the note, "we will see a small flash of light when an electron passes through the slits."
& this is where the paper seems too brief.
what's the need for a light source if the electron is already producing a flash? or does the presence of some light source somehow cause or permit one to see the flash? & then is it the location of this flash that indicates which slit the electron has passed through, or is that determination made in some other way?
thanks for reading & even more thanks if you can answer.
regards to all.