1.)I'm wondering to what extent Young's and other double-slit experiments depend on "slit" geometry. Does the same effect show up with two pinholes? I read a brief mention of G.I. Taylor having used a pinpoint somehow, but the description wasn't expanded enough for me to understand the set up. 2.) Young, obviously, did his experiment in air. Has anyone tried the double-slit with light in a vaccuum? 3.) With electron double-slit demonstrations the electrons have to be set in motion by electric potentials. I think this means they are accelerating as they go through the slits, unlike light. If so, does this create any signifigant differences from light demonstrations that have to be accounted for?