hi...I read from Hyperphysics site the relation between gravity and photon which says that(adsbygoogle = window.adsbygoogle || []).push({});

When the photon escapes the gravity field, it will have a different frequency

f ′= f (1 - GM/r*c²)...so when photon escapes r increases and so the value in the bracket also increases and hence frequency would be increasing which means it would be blue shifted when photon escapes gravitational field then why we say that light from a gravitational field would be red shifted ..is this right? Please clarify...

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# Gravity and Photon

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