I see a bunch of people who really got deep into this subject. I never learned too much about it, but I do know this- out of holes, electrons, and current-current is the one that will really get your attention
when it comes to physics. I just have a suspicion the Grumpy_Mike used to be known as Happy_Mike before college.
A hole has a mass you can weigh it.A hole can move in a substrate. It has velocity.A hole can collide with other holes and bounce off them.All these "missing" electron stories are just that, a convenience fiction for those who don't want to go too deep into the theory. Holes are real.
no one really knows what it all really is.
OMG, it took 60 years to get my Revenge
Science is just another mythology. Probably a better informed mythology than most, but when you get down to brass tacks, no one really knows what it all really is.
how a "Hole" has measureable weight.
A hole has a mass you can weigh it.
It is found that, when quantum mechanics is used to specify the motion within the crystal of n electron or hole on which an external field is applied, it is possible to treat the hole and electron as imaginary classical particles with effective masses mp and mn respectively. The approximation is valid that the externally applied fields are much weaker than the internal periodic fields produced by the lattice structure. In a perfect crystal these imaginary particles respond only to the external fields. In conclusion, then, the effective-mas approximation removes the quantum features of the problem and allows us to use newton's laws to determine the effect of external forces on the elctrons and holes within the crystal.
In general, however, the value of effective mass depends on the purpose for which it is used, and can vary depending on a number of factors. For electrons or electron holes in a solid, the effective mass is usually stated in units of the rest mass of an electron, me(mp) (9.11×10−31 kg).
A statement like this always makes me want to ask what it would mean or what it would take to really know what it all really is. To make a statement like that requires that you know. So by all means, tell us.
Science is just another mythology. ...
Scientists spend their time disproving beliefs,
No, science is NOT a mythology!