Photoelectric effect

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Natallie K 3B
Posts: 61
Joined: Wed Sep 30, 2020 9:51 pm

Photoelectric effect

Postby Natallie K 3B » Tue Oct 06, 2020 1:06 pm

Does the photoelectric effect need to be done in a vacuum? Why or why not?

TrishaP_3E
Posts: 50
Joined: Wed Sep 30, 2020 9:58 pm

Re: Photoelectric effect

Postby TrishaP_3E » Tue Oct 06, 2020 1:15 pm

Yes, it must be done in a vacuum. Under regular atmospheric conditions, electrons collide several times with the various molecules that are in our air, which causes them to lose energy. This would interfere with the threshold energy of electrons that allows for the energy level changes that occur as a result of the photoelectric effect.

Claire_Kim_2F
Posts: 67
Joined: Wed Sep 30, 2020 10:02 pm

Re: Photoelectric effect

Postby Claire_Kim_2F » Tue Oct 06, 2020 1:15 pm

Yah because it is measuring the electrons thus it needs the vacuum because the gas particles can affect the photoelectric effect by colliding with the electrons. This can mess up the experiment thus a vacuum is needed.


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