## photons and quanta

$c=\lambda v$

Funmi Baruwa
Posts: 108
Joined: Wed Sep 30, 2020 9:50 pm

### photons and quanta

In the first lecture this week, Dr. Lavelle said light is absorbed/emitted in discrete units, quanta or photons.

So my question is, what is the difference between quanta and photons?

manisha_joseph_1H
Posts: 92
Joined: Wed Sep 30, 2020 10:01 pm

### Re: photons and quanta

Quanta is used to describe any substance that holds a discrete quantity of energy proportional in magnitude to the frequency of the radiation it represents. Therefore, the word "quanta" is used to describe photons because they are packets of discrete energy. Essentially, quanta is a broad term that can be applied to photons based on their characteristics and behavior. Hope this helps!

Rachel Jiang 3H
Posts: 90
Joined: Wed Sep 30, 2020 9:58 pm
Been upvoted: 1 time

### Re: photons and quanta

Hi! A quantum is the smallest particle of any substance at the subatomic level. A photon is, more specifically, the smallest discrete amount of electromagnetic radiation, or quantum of light. Hope this helps!

Funmi Baruwa
Posts: 108
Joined: Wed Sep 30, 2020 9:50 pm

### Re: photons and quanta

thanks so much!

Alessia Renna 1D
Posts: 51
Joined: Wed Sep 30, 2020 9:36 pm

### Re: photons and quanta

A quanta is the smallest particle of something, that something in this case is light, of which a photon is the smallest possible particle.

gabbi_r2C
Posts: 91
Joined: Wed Sep 30, 2020 9:52 pm

### Re: photons and quanta

Agreed with above. Quantum is a general term for the smallest particle of something, while photons refer specifically to light and can be said to hold specific quanta of energy.

Katie Le 3K
Posts: 73
Joined: Wed Sep 30, 2020 9:35 pm

### Re: photons and quanta

quanta is used to describe small units that are discrete so photon is quanta

AnjikaFriedman-Jha2D
Posts: 94
Joined: Wed Sep 30, 2020 9:55 pm

### Re: photons and quanta

Quanta is a discrete unit of something, such as energy. In this case, photons possess a discrete, or quantized, amount of energy.