Greetings This is my first post in this section of PF. As the title says, I just want to know the typical dimensions of the two-slit experiment, intended for electron interference. That is, what are the slits made of, what is their spacing from the screen,source and from each other. Is there any other form of physical slits that is not based on the thin wire separation of the slits, like electron bi-prism. And what is the typical uncertainty of the energy of the bombarded electrons. Any other information that you think I skipped mentioning would be welcomed. Thanks for your time.