`p = h/lambda`

Enter a value for all fields

The Momentum of a Photon calculator computes the momentum of a photon based on the wavelength and Plank's constant where:

INSTRUCTIONS: Choose units and enter the following:

• (h) Planck's constant
• (`lambda`) Wavelength of photon

Momentum(p): The equation returns momentum(p) in kg*m/s.

The Math / Science

The Momentum of a photon is found using the following formula: 

         p=h/λ

where:

• p = Momentum of a photon
• h = Plank's constant
• λ = wavelength

References

34.2 How much light is one photon by Benjamin Crowell, Light and Matter  licensed under the Creative Commons Attribution-ShareAlike license.