1 Secondary emission: An electron, atom or molecule colliding with the surface of the cathode with enough energy can knock electrons out of the surface. 2  Photoelectric emission: Electrons can also be emitted from the electrodes of certain metals when light of frequency greater than the threshold frequency falls on it.
Best Answer: Do it yourself, often referred to by the acronym DIY, is a term used by various communities that focus on people (called do-it-yourselfers or DIYers) creating or repairing things for themselves without the aid of on-duty, work-stationed paid professionals.
Evy /evy/ [2 sylls.] as a girls' name means life, animal. Evy is a version of Eve (Latin, Hebrew).Evoy is a conventional surname.vy is an uncommonly occurring first name for women. Evy is also an unusual surname for both adults and children. (2000 U.S. Census).