Homework Help: electricity

Posted by Bren on Sunday, April 18, 2010 at 10:39am.

Electrons are emitted from a conductor when the conductor is:

A. Exposed to weak light
B. cooled rapidly
c.bombarded by high-speed electrons
d.subjected to a small voltage

electricity - drwls, Sunday, April 18, 2010 at 11:04am
c. Photomultiplier tube light detectors use this principle.
See
http://quarknet.fnal.gov/projects/pmt/student/dynodes.shtml
for a discussion

The process is called secondary emission.

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