## Amplitude

$c=\lambda v$

Maria Trujillo 1L
Posts: 47
Joined: Fri Apr 06, 2018 11:05 am

### Amplitude

I know that amplitude is not that often mentioned, nor is there an equation regarding amplitude, that we have encountered. However, I was wondering what the relevance was regarding the photoelectric effect and the first experiment. I know that increasing wavelength and amplitude, will do nothing if the frequency is not high enough to produce energy that will be above the threshold. Yet, when the frequency does manage to get energy above the threshold, increasing the amplitude will cause an increase in effect, but why? Also does this change the equation when amplitude is increased and frequency is high enough?

MariahClark 2F
Posts: 60
Joined: Wed Nov 15, 2017 3:04 am

### Re: Amplitude

What do you mean by "will cause in an increase in effect"?

Chem_Mod
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Joined: Thu Aug 04, 2011 1:53 pm
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### Re: Amplitude

Amplitude is related to the intensity of light. Doubling the amplitude is doubling the intensity, meaning your # of photons you bombard the metal doubles from the example you provide.

Isobel Tweedt 1E
Posts: 31
Joined: Fri Apr 06, 2018 11:05 am

### Re: Amplitude

To clarify, you square the amplitude to get the intensity of that wave.