yes i could

First you need to understand how much empty space there is in an atom. Don't really do what I am about to tell you to do; I am just telling you this to illustrate my point. To understand the size proportions, do the following: 1. Get a marble 2. pluck out one of your hairs. 3. cut the tip of the hair off. A marble to the tip of a human hair is about the same size proportion of the nucleus of atom to an electron. marble:hair-tip = nucleus:electron I hope that you now understand the size relationship. Now lets get an idea distance between energy levels. 1. go to your car. 2. Set the marble down. 3. get in your car, drive two miles staight line distance from where your car was parked. 4. get out of your car and set the hair-tip down in the street. That is about how far away the expected value is for the first energy level of an electron would be from the nucleus, if the atom was "blown up" so that nucleus was the size of a marble. Now you just set a hair-tip down in the street; it is very small and you have probably lost track of it so you try to compute where it might be. You do this by computing an expected value; it is sort of an average distance from where you set it down and where it might be. While you are computing this (sort of) average, you, also, use the data to compute the standard deviation. You find that standard deviation of where it may be and where it may be headed is proportional to Planck's constant. I hope that this helps.