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How is it possible for a black hole to suck in light which has no mass?
Wiki User
∙ 12y ago
A photon is classed as a 'massless' particle. However as mass and energy are aspects of the same thing it has mass by virtue its energy content.
It is not a simple and easily explained subject. It is necessary to learn some rather difficult mathematics.
Wiki User
∙ 12y ago
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If light get suck in the black hole it still can escape the gravity because it has no mass but why light still in the black hole?
Light does have mass - since it has energy, it follows that it also has mass. Its REST MASS or INVARIANT MASS, however, is zero. On the other hand, the black hole distorts space and time in its surroundings so much that the only paths a ray of light (or anything moving at the speed of light or less) can take, will take it deeper into the black hole.
What is an object so dense that light can't escape it?
Black holes are objects of such intense gravity that even light cannot escape, since the escape velocity at the event horizon is the speed of light. It would be better however to say that in order for the event horizon to exist, the object has to be dense enough that it's smaller than the Schwarzschild radius for that mass. This may seem counter-intuitive but it's possible for a great mass of lower density to allow light to escape for this reason - or, a much lighter object of higher density to not allow it to escape because the mass is inside this radius - hence it's possible to have a low-mass microscopic black hole.
What is Light and how is it attracted towards Black Hole?
Light is energy without a rest mass - but it does have a mass equivalent due to the energy it contains. A black hole warps the space around itself, thus causing "light rays" to be bent toward it.
What happens to a mass when it is swallowed by a black hole?
The object swallowed by the black hole is destroyed; its mass is added to the mass of the black hole.
Does the Emc2 equation apply to a black hole?
Yes. Energy that enters a black hole, such as light, becomes part of its mass.
Is it possible for something to have an escape velocity equal to light?
No light is the fastest possible. Nothing escapes the velocity of light. ==================================== Sure. The escape velocity at some appropriate distance from a black hole is equal to 'c'. That's why the hole is black. The exact value of the distance depends on the hole's mass.
If light can be pulled into a black hole that suggests mass What is the weight per square meter?
light has no mass and therefore no weight. Light cannot be "pulled" into a black hole. The escape velocity from a black hole is greater than the speed of light, so no light can escape from a black hole. Spacetime in the vicinity of a black hole is greatly distorted by the hole's gravity, and light may travel along curved geodesics that intersect the black hole. But it is not pulled in.
If light get suck in the black hole it still can escape the gravity because it has no mass but why light still in the black hole?
Light does have mass - since it has energy, it follows that it also has mass. Its REST MASS or INVARIANT MASS, however, is zero. On the other hand, the black hole distorts space and time in its surroundings so much that the only paths a ray of light (or anything moving at the speed of light or less) can take, will take it deeper into the black hole.
How is the formation of a normal black hole different from the formation of a supper-massive black hole?
It is not yet known for sure how a supermassive black hole acquires the enormous mass it has. It is possible that it starts as a normal black hole, and then gets more mass. It is also possible that from the start, a much larger amount of mass than in a normal black hole collapses.
Why they call it a black hole?
A black hole sucks all the mass and energy which passes it, even light. So it's called black hole.
Why do they call it a black hole?
A black hole sucks all the mass and energy which passes it, even light. So it's called black hole.
What is an object so dense that light can't escape it?
Black holes are objects of such intense gravity that even light cannot escape, since the escape velocity at the event horizon is the speed of light. It would be better however to say that in order for the event horizon to exist, the object has to be dense enough that it's smaller than the Schwarzschild radius for that mass. This may seem counter-intuitive but it's possible for a great mass of lower density to allow light to escape for this reason - or, a much lighter object of higher density to not allow it to escape because the mass is inside this radius - hence it's possible to have a low-mass microscopic black hole.
What is Light and how is it attracted towards Black Hole?
Light is energy without a rest mass - but it does have a mass equivalent due to the energy it contains. A black hole warps the space around itself, thus causing "light rays" to be bent toward it.
What happens to a mass when it is swallowed by a black hole?
The object swallowed by the black hole is destroyed; its mass is added to the mass of the black hole.
How do black holes gain weight over the course of a lifetime?
Black holes gain mass by pulling matter into them. The mass of anything that falls into a black hole gets added to its mass. Even energy in the form of light and other electromagnetic radiation can add to a black hole's mass.
Does the Emc2 equation apply to a black hole?
Yes. Energy that enters a black hole, such as light, becomes part of its mass.
What does the black hole?
The black hole represents a crust in the space which swallows anything that passes through it. Even light cannot escape from a black hole! There is a particular radius for a mass to become a black hole when it is squashed. This is known as the Schwarzschild radius and for the body to become a black hole, the escape velocity must equal or exceed speed of light!
