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# The energy of a Red Light photon wrt a Microwave photon

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The lowest energy visible light photon is the longest wavelength at the red end of the light spectrum. How many times greater is this energy than that of a typical microwave photon with a wavelength of 10^7 nm?

https://brainmass.com/physics/photons/estimating-wavelength-visible-light-348834

#### Solution Preview

See attached file.

Determining the energy relationship between light photons of different wavelengths and a comparison of results

The energy associated with a photon of light (E) can be described as directly proportional to its frequency (f ) by (1) below

E = h*f (1)

Where h is the constant of proportionality known as "planks constant" = 6.626 x 10^-34 J.s

We also know that the velocity light (c) can be shown to be the product of frequency (f ) and wavelength (Lamda) as given by (2)

c = Lamda*f (2)

Rearranging (2) in terms of ...

#### Solution Summary

This solution shows how one would typically estimate the energy of a longest wavelength visible light (red light) photon with respect to a microwave photon having a wavelength of 10^7 nm.

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