Releasing Electrons with a color filter

[wiegetz]

Homework Statement

Simple question we have to answer:

(Physics) How do I release the electrons from the cathode with a color filter? (The so called
Photoelectric effect)

Homework Equations

none

The Attempt at a Solution

[/B]

Here we have a conflict , the so called wave-particle duality, if I recall it correct.

I have no idea what could cause to release the electrons from the photocell. In the experiment the light lost voltage after inserting a color filter, making the electrons release from the photocell. (cathode and anode)

But why exactly, I cannot imagine. Perhaps because the color filter absorbs the electrons? (Makes no sense though.)

 

[hilbert2]

Google "work function of metals" for info.

 

[andrevdh]

What do you mean by the

the light lost voltage

?