Electron emission from solids (I): History & Theory

Comments on article "Electron emission from solids (I): History & Theory"
Name Views and CommentsDate
engineer yasir this site have not all information about a topic 2/21/2011
Rahul gupta How will be used of electron process of thermal 11/26/2010
nobody Lousy! Doesn’t explain anything. Sounds like a high school teacher pretending to know something he doesn’t really know. Can you build something that actually works based on the information provided? I think not! This is just technical babble without any substance!
Quote: invisible "light" was produced which caused glass to fluoresce.
It wasn’t invisible light that caused the glass the fluoresce, it was ionization. Don’t you know the difference between valence electrons and ionization?

Quote: Thomas Edison obtained a patent in 1884 for a thermionic emission device, consisting of an incandescent wire in an electric field within an evacuated envelope.
It wasn’t any electric field within an evacuated envelope! It was electron emission! Negatively charged particles are attracted to a positive charge… Don’t you know that?

Quote: A television camera is defined as a device for converting photons into electrical signals which operates on the principle of photoemission.
What? Photoemission? There is nothing of the sort taking place. Photoemission is about photoelectric effect, the production of current as a result of photon exposure. This is quoted out of context with the true subject matter because photon emission is not taking place and neither is photoemission. The change in current is a result of change in resistance resulting in a change in current that is amplified.		 3/20/2010
Purushottam Son Is Free electron thgeory is valid after ejection of some electrons(~10% or greater) from metal surface , there is any remarkable change occurs in work function or not in that condition. 12/24/2008
Bhaskar Sathe What are the demerits of metal field emitters? 7/5/2007
Gilbert Chapman Very helpful article, well written and understandable. 1/11/2006
Use the feedback form below to submit your comments.
Your Comments:
Your Name:
Use the form below to email this article to your friends.
Recipient Email Address:
 Separate multiple email addresses by ;
Your Name:
Your Email Address:
More Science and Technology Articles