(G*M) / (r * c^2) = (wo - we) / we
"wo" is the wavelength of the photon as measured by a distant observer.
"we" is the wavelength of the photon when measured at the source of emission.
and "r" is distance
w = c / f (c=speed of light)----------------
Pooya Afaghi
According to special theory of relativity, when speed limits to speed of light, energy (kinetic energy) limits to infinity. because mass limits to infinity.
m2 = m1 / SQRT(1 - (v/c)^2)
*when we approach the speed of light, necessary amount of energy is too much !
[In some holy books it's a famous statement: "God is light of Earth and skies"]
You spoke about photon while we don't know about nature of light yet.
In some cases we say light is photon and some others we say light is wave.
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Pooya Afaghi
Pooya Afaghi
The photon has only relativity mass that depends on photon wavelength.
One important thing is that photon has NOT any mass in speeds less than c (~3*10^8 m/s) and we don't have static photon.
Note1: Today we say "photon has momentum" instead of "photon has mass"
Note2: Light is...