Optics & Waves
Intermediate

Photon Energy (Wavelength)

Photon energy from its wavelength.

Formula

E=hcλE = \frac{hc}{\lambda}

Variables

hPlanck constant
cLight speed
\lambdaWavelength

Did You Know?

Every photon's wavelength sets its colour, from long lazy red waves to short energetic violet ones.

photonlightenergy