Great simple explanation of light and the photoelectric effect

[Vicarious]

http://www.colorado.edu/physics/2000/quantumzone/photoelectric.html

 

I learned about the photoelectric effect in Physics class today. I was a little confused by it, so I looked it up on google. The page above is a well written summary.

[Akw2000]

http://www.colorado.edu/physics/2000/quantumzone/photoelectric.html

 

I learned about the photoelectric effect in Physics class today. I was a little confused by it, so I looked it up on google. The page above is a well written summary.

 

That was a VERY good page, thanks!

[UncleAl]

Look at the electrodes of a DC arc lamp. One is skinny, one is very thick. Electrons emitted from the skinny one cool it by evaporation through the work function. They accelerate across the gap, making light in the intervening gas, and slam into the other electrode. Not only does it get hit by the accelerated electrons, but they codense through the work function - like steam into water - and the electrode gets heated by that, too.

 

Be the hammer not the nail.