Gravitational Redshift

Shift in the frequency of a photonDiscrete bundle of light energy. Light of a given energy (frequency) cannot be broken up indefinitely. Rather for a given frequency it comes in discrete bundles with energy (h = Planck's constant and ν= frequency): It is often useful to think of light as a bunch of particle photons; whereas, Click on Term to Read More to lower energy as it climbs out of a gravitational field.