Physics
Intermediate
Energy of a Photon
Energy of a photon from its frequency.
Formula
Variables
hPlanck constant
fFrequency
Example
A photon of green light (~5.5×10¹⁴ Hz) carries E = h·f ≈ 3.6×10⁻¹⁹ J.
Did You Know?
Einstein won his Nobel Prize not for relativity but for explaining that light energy comes in these discrete photon packets.