# Photon Energy

## Table of Contents

The energy of a photon is:

$$ E = hf = \frac{hc}{\lambda}$$

Where

- \(h\) is the Planck constant,
- \(f\) is the frequency of the photon
- \(c\) is the speed of light in a vacuum, and
- \(\lambda\) is the wavelength of the light.