The Photon Energy from Wavelength calculator compute the energy of a photon based on Planck's constant (h), the speed of light (c) and the wavelength of the photon ( λ).
INSTRUCTIONS: Choose units and enter the following:
Energy of Photon (E): The calculator returns the energy in Joules. However, this can be automatically converted to compatible units via the pull-down menu.
The energy of a photon depends only on its wavelength. Theis:
Note the following relations are also true:
The Astronomy Calculator Suite includes functions that are useful for studying astronomy and include the following: