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basic unit of matter, made of protons, neutrons, and electrons

who discovered electrons and when?

jj thomson, 1898

in what lab were electrons discovered

Cavendish Laboratory

what does emf stand for?

electromotive force

where are electrons?

cathode rays

how do electrons travel?

in straight lines

when was the crooke's tube invented?

around 1875

what is the crooke's tube used for?

it was where cathode rays were discovered

define emf

voltage produced by electric battery or generator, energy supplied by source of electric power

what causes emf?

excess of electrons at one point and deficiency of electrons at another. the difference at electric potential energy

what makes tvs bright?


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