| [ sciEncE ] in KIDS 글 쓴 이(By): guest (123) <dialup8.cs.unc.e> 날 짜 (Date): 2003년 6월 18일 수요일 오후 12시 20분 02초 제 목(Title): Re: 전자총 Well, sorry for the confusion, but I was merely pointing out that you don't *have to * count each single electron in order to get electron interference. Yes, of course, you still get interference pattern if you fire one electron every hour. Or a billion electrons every nanosecond. It doesn't matter. Besides, please correct me if I'm wrong, but I think if you know an electron's momentum precisely enough, then the pattern disappears. That is, if the momentum is known precisely enough to calculate which slit it goes through, then the interference obviously cannot happen! Well, it's true that the better we measure its momentum, the less we are sure of its position. But this is a quantum effect, and we are talking about a freaking slit, not a subatomic particle! (I mean, it's much much bigger than Planck's constant... yeah, I know Planck's constant is not length... please pardon my abuse of terms..) |