MadSci Network: Physics

Subject: Electrons exciting materials to emit light.

Date: Fri Oct 19 08:11:31 2001
Posted by No name entered.
Grade level: 10-12 School: No school entered.
City: Hong Kong State/Province: No state entered. Country: Hong Kong
Area of science: Physics
ID: 1003493491.Ph

In a recent physics lesson, we were introduced to CRT and how the electron 
beams would excite a phosphorous coating and make it emit photons resulting in 
a dot being seen. However, i was confused with a question where if the 
electrons potntial energy is increased by accelerating it through a stronger 
electric field, will the light emitted by the phosphorous material be more and 
why? If we think about Einstien and his photon model, each particle can only 
absorb one photon and as long as this photon has a certain threshold energy, a 
particular photon will be released by the particle. Is this the same when 
particles absorb electrons? 

Re: Electrons exciting materials to emit light.

Current Queue | Current Queue for Physics | Physics archives

Try the links in the MadSci Library for more information on Physics.

MadSci Home | Information | Search | Random Knowledge Generator | MadSci Archives | Mad Library | MAD Labs | MAD FAQs | Ask a ? | Join Us! | Help Support MadSci

MadSci Network,
© 1995-2001. All rights reserved.