are all electrons the same size? If so,how can you tell?

Question

Electrons are thought to be round,are they? And how can you measure one?

Answer 1

well the most correct answer is no
electrons are fundamental particles that have no spacial existence ( they can be 'waves' ) in a very real way they have no physical existence as a 'body' we do not measure electrons so much as the effects they have on the surrounding environment

so they are not round but they are identical in their 'charge' with no real physical body to measure

and on this scale things make no sense at all !

Answer 2

Quantum mechanics correctly predicts the behavior of atomic and sub-atomic particles like the electron. In fact it does so with extraordinary precision and accuracy better than 1 part per billion, at least. That is the good news! The bad news is that our classical "intuitive" concepts like "size" lose their meaning.

This sacrifice is very difficult, not only for us mere mortals, but also for "experts" in quantum theory. The electron is as small (or as large) as you want it to be, because the electron exhibits properties that we associate with particles (that have a size) and waves (that do not have a size). This duality is not a matter of "doing a better experiment" it is inherent in the nature of the particles.

Author John Gribbon has written a couple of readable books on this strange world. He does not solve the problem, but he does help us to understand that there is a problem.

Dr. H

Answer 3

Try here ---

http://en.wikipedia.org/wiki/Classical_electron_radius