Does light have mass? Is that why it is bent into black holes by extreme gravity?

Answer 1

First of all, light has no mass. Second of all, gravity is only a force if you use Newtonia mechanics. If you use relativity, gravity is simply an affect produced by the curvature of spacetime. Any thing with mass will produce a curvature in spacetime (think of spacetime as a rubber sheet, place something on the rubber sheet and the sheet will warp. Now roll a marble or something in a straight line and you will see it change direction as it follows the curvature ofthe sheet). Light follows a straight path in spacetime. However, if spacetime itself is curved due to presence of mass (actually it is more density then mass) then the path of light will seem to be curved also. Inside the event horizon, becuase of the extreme density, spacetime is actually curved upon itself. Therefore any light produced by the black hole will follow a straight path in spacetime and goes right back to the black store instead of coming out of it. Light on the outside of the black hole will actually not get sucked in. The worst it would do is to orbit the blackhole precisely at the event horizon forever.

Goring is not correct in stating that Photons have mass. A masseless particle can have mometum. The equastion is:

P = h/lamda

h = planck's constant, lamda is the wavelength of the photon. Only classical Newtonian Mechanic requires that a particle has mass to have momentum. Not the case with relativity.

Also, there is a reason why scientist say nothing can move at the speed of light. E=mc^2 only describes a particle at rest. AS soon as it starts to move, it acquires kinectic energy and the equation becomes:

E = mc^2+0.5*mv^2 + 3/8*m*(v^4/c^2) + 5/16*m*(v^6/c^4)+.....

m is mass of a particle. As velocity, v, approaches that of the speed of light, the energy of the system approceas infinity. The only reason that light can travel at the speed of light is because it is massless. The energy equation for light is:

E = h*f

where h is the Planck Constant and f is the frequency.

Also, please state your source for the experiment that proved that light has mass.

Answer 2

If a light particle was not a micromass it would not obey the rules of gravity. If would have no momentum during its propagation; the reason is because of the definition of momentum as the product of a real mass and velocity that the mass is moving.
Earth'smass being sort of the idea of a black hole because it does not radiate energy like the sun. The Earth absorbs,and traps light energy and returns only a percent of the energy received from solar and cosmic radiation,to the volume of Space.

Therefore; if light would be a micromass then it would accelerate toward a gravitational mass and its trajectory and velocity altered(known as bending of light)

Photons have been experimentally proven to have a mass limit in the order of 10^- 60 micrograms.
This would end the Science belief that photons are rays of light carrying zero mass.

Answer 3

Yes, light has mass. Yes, that is why it is bent into black holes by extreme gravity.

Answer 4

Light does have mass, but it takes extreme gravity to actually affect it.