## Photon energy

$c=\lambda v$

Deepika Pugalenthi 1A
Posts: 60
Joined: Fri Sep 28, 2018 12:24 am

### Photon energy

Why do photons give off only positive energy?

Riya Shah 4H
Posts: 65
Joined: Wed May 02, 2018 3:00 am

### Re: Photon energy

Because the energy of an electromagnetic radiation can never be negative. The energy emitted by an object (here, radiation) is always positive.

Theodore_Herring_1A
Posts: 60
Joined: Fri Sep 28, 2018 12:29 am

### Re: Photon energy

Photons are given off when an electron loses energy. So when change in energy is negative, that energy lost is the energy of the photon, which is positive. So the electron loses energy, but that energy is given to the photon, and thus is positive.

### Who is online

Users browsing this forum: No registered users and 2 guests