1
$\begingroup$

I understand that in order for an electron to move to a higher energy level, it must absorb a photon with an exact amount of energy, otherwise the electron will not move.

In an electron discharge tube, in order for an electron to move to a higher energy level, do the colliding electrons need to have sufficient energy, rather than an exact amount of energy?

$\endgroup$
  • $\begingroup$ As far as I konw, energy level only exists when electron is trapped in a potential field, e.g. the Coulomp potential of necleus. In other word, the bounded electron. The electron in an electron discharged tube, however, is free electron and can be described under classic physics. $\endgroup$ – Bettertomo Jun 13 '18 at 2:56

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.