What is the energy of a mile of a red light photos with a wavelength of 680nm?

Answer 1

The energy of a photon can be calculated using the following formula:

E = hc/λ

where E is the energy of the photon, h is Planck's constant (6.626 x 10^-34 joule-seconds), c is the speed of light (2.998 x 10^8 meters per second), and λ is the wavelength of the photon.

Substituting the given values into the formula, we get:

E = (6.626 x 10^-34 joule-seconds x 2.998 x 10^8 meters per second) / (680 x 10^-9 meters)
E = 2.937 x 10^-19 Joules

Therefore, the energy of a photon of red light with a wavelength of 680 nm is 2.937 x 10^-19 Joules.