Photo electric effect

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Karolina herrera1F
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Photo electric effect

Postby Karolina herrera1F » Sat Jul 06, 2019 7:01 pm

Why does there need to be a vacuum in the photo electric effect and what does it necessarily mean? Is it because the electrons get too excited ?

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Re: Photo electric effect

Postby somyapanchal1D » Sat Jul 06, 2019 8:50 pm

The photoelectric experiment has to be done under a vacuum otherwise the ejected electrons will mix and interact with molecules in the air which can disrupt and ruin the experiment.

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Re: Photo electric effect

Postby Chem_Mod » Sun Jul 07, 2019 10:48 am

The vacuum "vacuums" the air out it, which basically means there are no air molecules that are in the experiment, so all electrons that are ejected will go to the detector instead of interacting with air molecules.

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Re: Photo electric effect

Postby simmoneokamoto3K » Sun Jul 07, 2019 12:08 pm

Vacuum is basically just referring to an enclosed sapce, so for example space is also a vacuum. We need a vacuum though because without it, the experiment will have other external forces interfering like the presence of air molecules. Because the photo electric effect centers on the idea of electrons being ejectec by the force of photons, we need photons to only interact with electrons instead of molecules.

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Re: Photo electric effect

Postby hannabarlow1A » Sun Jul 07, 2019 12:58 pm

If the experiment were not conducted within a vacuum, there would be other variables, such as other molecules, we would have to consider that could impact the results.

Radha Patel 4I
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Re: Photo electric effect

Postby Radha Patel 4I » Sun Jul 07, 2019 5:37 pm

The vacuum prevents air molecules from electrons emitted from being mixed.

Sisi Li 1F
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Re: Photo electric effect

Postby Sisi Li 1F » Sun Jul 07, 2019 6:36 pm

The vacuum essentially prevents other elements that are in the air from interacting with the experiment, which would throw off the results

Yen Ho Chou 1D
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Re: Photo electric effect

Postby Yen Ho Chou 1D » Sun Jul 07, 2019 10:54 pm

it has to be in a vacuum to be controlled, so other variables don't make the results inaccurate

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