Photo electric effect relate to determining the charge of an electron?

  • Thread starter Kristine
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  • #1
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how does the photo electric effect relate to determining the charge of an electron?
 

Answers and Replies

  • #2
374
2
I'm not sure that it does.

The photoelectric effect is where incident photons have sufficient energy to knock electrons out of their captured state - ie ionise the material. Charge is irrelevant here.
 
  • #3
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If we apply formula for Photoelectric effect i.e.

[tex]k_{max}=E_{photon}-\phi(work function of metal)[/tex]

now if we are able to stop the fastest moving electron with cuttoff voltage such that [tex]eV_0 = K_{max}[/tex]
so we can calculate e from above equation

But i'm not sure whether this is applied for charge calculation
 
Last edited:
  • #4
Njorl
Science Advisor
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The classic experiment for determination of electron charge is the Milliken Oil Drop Experiment. Or, as I call it, the Milliken Eye-strain Experiment.

Njorl
 
  • #5
650
1
Yes its true classical method was developed by Milikan

But i read somewhere that he manipulated with his readings , is there any controversy
 

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