If photons are massless, why can't light escape the gravitational pull off a blackhole which has gravity at its singularity.?
Gravity is a product of masses in play. So why should light, which is composed of photons which are massless be attracted towards a blackhole? Is there something we are missing about gravity?
- Tom SLv 71 year ago
Gravity is a "warpage" or curvature of spacetime. Both matter and radiant energy (light) will follow spacetime.
- goringLv 61 year ago
Photons have mass and obey the laws of gravity
- 1 year ago
Photons have mass according to Albert Einstein; so they can be pulled by gravitational forces. That is all I know. I am just a humble restaurant worker, but I know this much about light and particulate light. The numeric value of a photon in mass is miniscule. It has to be written in scientific notation. There is mass there though, I guarantee you.
- Jeffrey KLv 61 year ago
We are not missing anything about gravity. Einstein found it.
Gravity is not a force. It is a curvature of spacetime. Light follows a geodesic path, the straightest possible path in a curved space.
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- Ronald 7Lv 71 year ago
Light doesn't need Mass because it has Kinetic Energy
If it didn't have Velocity it wouldn't exist
It clearly doesn't come out from a Black Hole
With all that Matter falling in Light goes with it
End of story
Black Holes are weird
Most of what we have learnt about them are guesses and theories
It really is hard to shed some light on the Subject of Black HolesSource(s): Messier 87
- D gLv 71 year ago
Photons HAVE. Kinetic mass or relativistic mass
They have 0 rest mass because they never exist at velocity of 0
- roderick_youngLv 71 year ago
Force of gravity being proportionate to the product of the masses is a good approximation for everyday life, but not strictly true at high gravity, any more than f = ma is valid for objects moving very fast.
- 1 year ago
It's simple physics. As the gravitational pull of an object increases, so does the escape velocity from that object. If the escape velocity exceeds the speed of light, then photons (which can only move *at* the speed of light) don't have the velocity needed to escape.
- nebLv 71 year ago
Gravity is NOT just the product of masses at play. Massless particles are affected by gravity since they are constrained to follow spacetime curvatures just like everything else. They also gravitate just like everything else. There is no spacetime path available for light to travel from the inside of the event horizon to the outside of the event horizon. We describe gravity with general relativity, not Newton’s law.
- Anonymous1 year ago
'black hole' is STILL just a theory ..........................................