Physicists have long wondered why particles can only have an electric charge of +1, -2 or any whole number. Now we ...

the electron is not literally a tiny ball of charge. In fact, to the best of our knowledge, the "bare" electron is a featureless point. If you could turn off all of its interactions with the rest ...

Charge is measured in coulombs (C). Since electrons are so small and one electron will not have much of an effect anywhere, it is more useful to refer to large groups of electrons. One coulomb of ...