Originally Posted by Dnix
I was under the impression that below 14nm Heisenberg's uncertainty principle kicks in and you won't know where any given electron will be at any given point in time, causing some crazy errors/leakage? Any super smart dudes with expensive degrees wanna chime in?
You never know where they are, only in the large scale when you have billions and billions of electrons it doesn't really matter if only 99.999% of them go where you expect them to, but when you have a handful the difference is massive. The law doesn't kick in at any specific point, the amount of uncertainty just goes up when things become smaller. In a three dimensional space the uncertainty goes up when size decreases if the other factors remain constant (dx * dp >= 2 * pi * h / 2 ). It's far messier than that in practice as it isn't the only thing happening.