Photoelectric Effect

$c=\lambda v$

ShreyaKannan1B
Posts: 51
Joined: Wed Sep 11, 2019 12:15 am

Photoelectric Effect

Why does the experiment have to happen in a vacuum?

charleejohnson1L
Posts: 99
Joined: Fri Aug 30, 2019 12:17 am

Re: Photoelectric Effect

In a vacuum, there is less of a possibility of interference, so the data from the experiment is more accurate. :)

Kyla Grunden 1L
Posts: 46
Joined: Sat Sep 07, 2019 12:16 am

Re: Photoelectric Effect

In a post from a few years ago a TA said that water molecules in the air can scatter frequencies, which would make the measurements inaccurate.

Hope this helps!

Nyari Muchaka_Discussion 4A
Posts: 53
Joined: Thu Sep 19, 2019 12:17 am

Re: Photoelectric Effect

Vacuums are useful for reducing the number of molecules in a chamber(such as air or water vapor) so that the results of the test are more accurate and now skewed by environmental interference. It also makes it easier to measure smaller molecules such as electrons or ions as they travel within the vacuum.

pmokh14B
Posts: 107
Joined: Sat Aug 17, 2019 12:15 am

Re: Photoelectric Effect

any other molecules may interfere with the light and scatter the frequencies making the data less accurate.

Sreyes_1C
Posts: 90
Joined: Fri Sep 28, 2018 12:19 am

Re: Photoelectric Effect

in vacuums, we don't see the same interferences as we would in realistic settings

205154661_Dis2J
Posts: 109
Joined: Wed Sep 18, 2019 12:21 am

Re: Photoelectric Effect

Since a vacuum chamber is a rigid enclosure, less interference occurs and the results can be more accurate.

Kimme Chun 1I
Posts: 22
Joined: Sat Sep 07, 2019 12:17 am
Been upvoted: 1 time

Re: Photoelectric Effect

A vacuum provides a controlled environment where there is less chance of interference with outside factors