Gravity can be the speed of light.?

Question

There are two things. The speed at which gravity turns on and the strength of gravity. Like a ligh bulb, there is the speed at which the light turns on and its brightness.

So the most powerful sources of gravity known is a blackhole. The gravity is pulling things in a such a rate that light itself is sucked in so its safe to say that gravity in a black hole is traveling at the speed of light.

What would the speed of gravity be on a neutron star and earth?

You can convert the gravity to speed by knowing the strength of gravity.

What is the strength of gravity in a blackhole?
That variable would be the speed of light in gravitation because we know light can't excape it.

What is the strength of gravity on earth?
So what is the ratio between earth and the blackhole? Do some math skills that I am horrible at and you come to the conclusion at how fast gravity is.

Gravity does have a speed or light would be able to excape a black hole.

If earth gravity is 10,000,000 times less than a black hole and a black hole is the speed of light then.... The speed of earth gravity is 10,000,000 less than the speed of light.

Gravity is only a force because of its speed. Is a vacuum a force or does the vacuum have a speed value?

Like a vacuum cleaner there is a sucking 'force' but in order for that force to be a force there needs to be speed.

You can have a value of torque(the force) but you won't do squat unless there is rpm (speed) to make the horsepower.

You are right, gravity is something totaly different because it is in the 4th dimension. Gravity can't gravitate itself like electricity can't electrify itself.

I see gravity in a similar view at lift from an airplane wing. The upper part of the wing is curved and the bottom flat. So the air goes over it quicker than the bottom and creates a pressure difference ie lift.

With gravity the curve is caused by mass and so space(maybe gravitrons) speed up around this mass like air over a wing and gravity is the result.

"So, if you waved your magic wand and made the Sun vanish. It's gravity well, e.g. the dent in space, would vanish too and Earth would be affected by that instantaneously."


I feel if that ever happened there would be a recoil in the fabric of space time and end up ejecting matter away from it.

Think when you drop a rock in water. The water will dip down but it will spring back out of the water. I feel that is what would occur and something similar occurs during a supernova which adds to the outward force ejecting matter away.

It seems like there are simularities between the 4th dimension and fluid dynamics.

Answer 1

Most scientists believe that gravity propagation is instantaneous. In other words, the mass of an object distorts space itself and creates a sort of invisible slope for nearby objects to slip down. In other words, the mass of an object "dents" space. It's not exactly a force in that regard.

So, if you waved your magic wand and made the Sun vanish. It's gravity well, e.g. the dent in space, would vanish too and Earth would be affected by that instantaneously.

Answer 2

First off, let me commend you for being inquisitive and thoughtful about this. You are grappling with some hefty issues.

When you are talking about the "speed of gravity", think about it instead being the rate at which a gravitational field is propagated. For a long time, people thought gravitational force was exerted instantaneously. But overtime, scientists realized this could not be true. Years later, we now know that the gravitational force does take some time to impact surrounding objects.

The maximum speed at which gravity can travel is still the subject of some debate. Some experiments confirm gravity travels at the speed of light. Some theorists insist it can move much faster (see sources below). Gravity is a weak force and it is difficult to test under laboratory conditions.

Answer 3

The reason that people believe light cannot escape a black hole is due to what we call "escape velocity". Escape velocity is the speed at which something needs to be moving away from something to keep from "falling back down" to it.

On Earth, that speed is about 11.2 km/second. If Earth had more mass, of course the speed would be higher. Keep adding mass and the escape velocity keeps going up and up until eventually the escape velocity exceeds 300,000 km/second...the speed of light.

If gravity moved at the speed of light, as you assume, then not even gravity could leave a black hole. This should show you that gravity is not electromagnetic in nature, like light. Gravity is something entirely different.

Answer 4

Gravity is the result of space shifting towards an object. It is hydraulic in nature and is as close to being instantaneous as you can get.

If a black hole is a gravitational force, space shifting towards the black hole, prevents light from leaving it similar to the bending of light as it passes a massive object. The bending of light is not a gravitational effect on light, it is the deflection of light by shifting space towards an object.

Answer 5

If you mean the speed of propagation of gravity, try this

http://en.wikipedia.org/wiki/Speed_of_gravity

saying it turns on like a light bulb is a bad analogy, its always on, so you should think of it differently. If the earth moves a small distance in its orbit around the sun, how long does it take for the suns influence to change or update on the earth.

To summarize the wiki, its very complicated and the answer is not known, light speed is one theory.

Answer 6

Gravity propagates at the speed of light, no slower or faster. Black holes come in all masses.

Answer 7

Gravity and speed of light are not comparable. Gravity is a unit of force which is measured in Newtons. Speed of light is a unit of velocity which is measured in meters per second.

Answer 8

Gravity is a force. It doesn't have a speed. And gravity is a pretty weak force, at that.

Answer 9

mabe