vacuum

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asalest 2K
Posts: 44
Joined: Wed Sep 30, 2020 9:39 pm

vacuum

Postby asalest 2K » Tue Oct 27, 2020 7:00 pm

Why does photoelectric effect have to be done under a vacuum?

Kaley Qin 1K
Posts: 40
Joined: Wed Sep 30, 2020 9:54 pm

Re: vacuum

Postby Kaley Qin 1K » Tue Oct 27, 2020 7:03 pm

It has to be done in a vacuum because, at normal atmospheric pressure, electrons bounce and collide with each other which would ruin the experiment. Without a vacuum the electrons could also crash into other molecules in the air like water vapor.

Kimiya Aframian IB
Posts: 62
Joined: Wed Sep 30, 2020 9:34 pm

Re: vacuum

Postby Kimiya Aframian IB » Tue Oct 27, 2020 8:11 pm

asalest 2K wrote:Why does photoelectric effect have to be done under a vacuum?

Hi! The vacuum is super important because it creates a more controlled environment and minimizes the effect of different electrons bumping into each other and changing energy/charges/speeds. Hope this helps.

SelenaDahabreh1K
Posts: 46
Joined: Wed Sep 30, 2020 9:47 pm
Been upvoted: 2 times

Re: vacuum

Postby SelenaDahabreh1K » Tue Oct 27, 2020 8:57 pm

The photoelectric effect needs to be done under a vacuum so that the experimental conditions are as controlled as possible. If the photoelectric effect weren't done under a vacuum, then the electrons would interact with the atoms in the atmosphere, which would have an influence on the experimental results.


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