## High Intensity

$c=\lambda v$

Jordan Young 2J
Posts: 102
Joined: Thu Jul 25, 2019 12:17 am
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### High Intensity

When discussing the photoelectric effect, is "high intensity" the same as "increasing the number of photons"? Are they synonymous? If so, does higher intensity just mean more/brighter light?

haileyramsey-1c
Posts: 105
Joined: Thu Jul 25, 2019 12:18 am

### Re: High Intensity

When you increase the intensity of light you increase the number of photons emitted. As intensity increase the amplitude increases. Yes, intensity is like brightness in that intensity is the amount of energy delivered in a certain time to a certain area.

Katie Bart 1I
Posts: 104
Joined: Sat Aug 24, 2019 12:16 am

### Re: High Intensity

So light intensity is determined by both amplitude and the number of photons? Do they play an equal part in determining frequency, or does one overpower the other?

BNgo_2L
Posts: 95
Joined: Wed Sep 11, 2019 12:17 am

### Re: High Intensity

In the photoelectric effect, intensity has little to do with the intensity of the light. Because the energy emitted in this experiment doesn't act like a wave, high intensity/amplitude does not eject electrons and produce kinetic energy from the metal surface unless the E(photon) is greater than or equal to the E(threshold of removing an electron). In the photoelectric effect, higher frequency is what will produce kinetic energy as electrons are removed and photons are emitted.

Haley Chun 4H
Posts: 54
Joined: Sat Aug 17, 2019 12:18 am

### Re: High Intensity

When light acts as a particle, higher intensity means higher number of photons. When light acts like a wave, higher intensity means higher kinetic energy.