do black holes have infinite gravity

General relativity predicts that the star collapses to an infinitely small point with infinite density. The theory of general relativity predicts that a sufficiently compact mass can deform spacetime to form a black hole. Lori_Anne: Hi, I am wondering how the Doppler effect looks in gamma rays? Regardless of whether that mass is just a collection of ordinary material, or a black hole. Black holes themselves are regions surrounding the singularity, within which escape velocity is greater than c. Since those regions have finite volume, their density . The reason that people believe this due to Einstein's theory is because it usually yields very good matching experimental results. . A black hole can be formed by the death of a massive star. A black hole has an infinite density; since its volume is zero, it is compressed to the very limit. There is an odd fact most people don't know. black hole, cosmic body of extremely intense gravity from which nothing, not even light, can escape. ! Black holes don't have infinite mass, so they have a very finite gravity field.

Drew: Do thermo-nuclear runaways and black holes have anything to do with each other . A black hole is an extremely dense object in space from which no light can escape. A non-rotating idealized back hole's mass is concentrated at a point at its center which is modeled mathematically as infinitely dense, but the total mass contained at that idealized point is still finite. At a distance, the strength of the gravity is proportional to the mass of an object. P.S: Please correct me if i got something wrong, thanks. Tuesday, June 4, 2013. P.S: Please correct me if i got something wrong, thanks. Now above all when it sucks things it adds up to its mass, which remains finite and it always will, even if it did suck in the whole universe! Jerry: At a distance, black holes really don't have more gravity than normal objects, so at a distance they really won't suck things in any more than a normal object of the same mass. The most common myth about black holes is that they're expected to contain singularities (which usually have "infinite density", "i. However, many of these points are completely regular, and the infinities are merely a result of using an inappropriate coordinate system at this point.In order to test whether there is a singularity at a certain point . ! 8,531.

The boundary of no escape is called the event horizon.Although it has a great effect on the fate and . Not all black holes will have the same force of gravity, because they're not all the same size. Now if they have infinite mass, the gravitational formula is: Gravitational force = (G * m1 * m2) / (d2) so, blah blah blah, it would mean the gravitational force of the black hole was infinite too, which . Black holes do not have infinite mass. A black hole possesses a gravitational field so powerful that not even light can escape. Answer (1 of 63): Short answer: No. The singularity is at the centre of the black hole, and is often hiding behind an event horizon. While black holes are mysterious and exotic, they are also a key consequence of how gravity works: When a lot of mass gets compressed into a small enough space, the resulting object rips the very fabric of space and time, becoming what is called a singularity. General relativity predicts that the star collapses to an . My thought on black holes is they are just a compression of time. Jerry: Again, this comes naturally from the equations of Einstein's theory of general relativity. No singularity, no physics mystery just an ever deepening time well. A black hole is a region of spacetime where gravity is so strong that nothing - no particles or even electromagnetic radiation such as light - can escape from it. But this approach breaks down when you have an astronomical object collapsed down to quantum sizes, which is exactly what a black hole is. Nothing is "transformed" into curvature, it simply exists.

From far enough away, gravity looks like it is centered in a point mass. If we replace the Sun with a black hole with 1 solar mass, we wo. They are unique in this because they have no spatial extent.

Black holes usually cannot be observed directly on account of both their small size and the fact that they emit no light. This is why the theory is trusted by so many scientists. The only thing that counts is the total mass of the object. First question, do black holes have a finite mass or an infinite mass? Black holes are points in space that are so dense they create deep gravity sinks. The bigger a black hole gets, the more powerful it is. The Event Horizon around a black hole is merely the point in space where the gravity finally . At a singularity, space and time cease to exist as we know them. A black hole is a region of space packed with so much matter that its own gravity prevents anything from escaping even a ray of light. A black hole is an extremely dense object in space from which no light can escape. What would make it infinitely dense isn't infinite mass, but zero volume, which resolves the contradiction you . Gravitational singularities are mainly considered in the context of general relativity, where density apparently becomes infinite at the center of a black hole, and within astrophysics and cosmology as the earliest state of the universe during the Big Bang/White Hole. The curvature of space, which results from mass, is the underlying cause of gravitation in General Relativity. A black hole forms when a massive star runs out of the fuel needed to balance out gravity, and collapses under its own gravity to a very small size. If they have a finite mass, disreguard everything i write below. This is true for any size of black hole. as r r s, this gravitational acceleration goes to infinity. Material falling into a black hole forms a disk, similar to a whirlpool in a bathtub drain. . But, as should now be clear, such a beast does not really exist in the real world. So it also has infinite gravity, and sucks anything which is near it! Visit Stack Exchange Tour Start here for quick overview the site Help Center Detailed answers. There is some debate on PF as to what "the singularity" means, however Kaku was almost certainly referring to a finite mass in zero volume. In either case, since we can't ever go and check, that doesn't impact what a black hole looks like to us (a region of space with a finite volume, finite mass and finite gravitational field). Answer (1 of 16): A black hole does not have infinite gravity. You are correct; black holes are not infinitely dense. The energy that produces the radiation comes from the mass of the black hole. Matter swirling around a black hole heats . 1 Share Ehsaas Digra The Uncertainty Principle does not allow particles to be confined in regions smaller than their wavelengths. Inside, gravity exists in three dimensions. At the core of a black hole, gravity is vastly strong, but not infinite, because there is no singularity there. When such a star has exhausted the internal thermonuclear fuels in its core at the end of its life, the core becomes unstable and gravitationally collapses inward upon itself, and the star's outer layers are blown away. Black holes have a complex shape.

Although we can't see a black hole, the material around it is visible. 1. They can be "observed," however, by the effects of their enormous gravitational fields on nearby matter.

The reason some people believe that a black hole contains a singularity is because Einstein's theory of general relativity suggests it is the case. As it shrinks, it gets steadily hotter, emitting increasingly energetic particles and shrinking faster and faster.

A black hole can not be seen because strong gravity pulls all of the light into the middle of the black hole. A black hole is a region of spacetime where gravity is so strong that nothing - no particles or even electromagnetic radiation such as light - can escape from it. A black hole generally forms after a star dies in a titanic . Research School of Astronomy and Astrophysics, the Australian National University Essentials A black hole is an object so massive and compact that not even light can escape its strong gravity. 2. Now above all when it sucks things it adds up to its mass, which remains finite and it always will, even if it did suck in the whole universe! Black holes are generally measured in solar masses, where 1 is as much as the mass of the Sun. Answer (1 of 9): Spacetime singularities should have "infinite gravity" and are assumed to exist somewhere inside black holes but they are not things we can observe or reliably compute. Consequently, the black hole gradually shrinks. A black hole forms when a massive star runs out of the fuel needed to balance out gravity, and collapses under its own gravity to a very small size. It was first seen in 1919 during a solar eclipse when light from a distant star was bent as it passed close to the surface of the sun. (ISNS) -- The cores of black holes may not hold points of infinite density as currently thought, but portals to elsewhere in the universe, theoretical physicists say. Not everything there is!! Beyond a certain region, not even light can escape the powerful tug of a black hole's gravity. And . In a science documentary, Michio Kaku mentioned that the singularity of black holes have infinite density and infinite gravity. Charles Q. Choi, Contributor. If a black hole contains a singularity, and gravitational force follows an r 2 law, then they do indeed have infinite gravity in the sense that you can get arbitrarily close to the singularity, meaning that the gravitational force gets arbitrarily large. So a black hole is highly unstable. The field is very strong close in, but once you get a few light years away . There are theorized miniscule black holes the size of an atom, all the way up to supermassive black holes that live in the centers of most galaxies. The gravity of the black hole, which exists in three . Physicists are undecided whether the prediction of singularities means that they actually exist (or existed at the start of the Big Bang), or that current knowledge is insufficient to describe what happens at such extreme . For the light to escape the grravity of the black hole, it should travel master then the speed of light. Not everything there is!! Density is what goes to infinity. It was poin. No.

The boundary of no escape is called the event horizon.Although it has a great effect on the fate and .

Actually at the center of a black hole spacetime has infinite curvature and matter is crushed to infinite density under the pull of infinite gravity. A non-rotating idealized back hole's mass is concentrated at a point at its center which is modeled mathematically as infinitely dense, but the total mass contained at that idealized point is still finite. While black holes are mysterious and exotic, they are also a key consequence of how gravity works: When a lot of mass gets compressed into a small enough space, the resulting object rips the very fabric of space and time, becoming what is called a singularity. The classical idea about black holes is that in a black hole, mass is concentrated to an infinitely small size, so it has an infinite density. A black hole possesses a gravitational field so powerful that not even light can escape. If space-time weren't true, this wouldn't have happened. A time well for a lack of a better description. Black holes are the regions of space-time where infinite amount of matter is crushed in to small point known as "singularity" and thats the reason that black hole have that much strong gravity . as is the relationship from the finite to the infinite. Black holes come in different sizes. In Black Holes, since the center . There are theorized miniscule black holes the size of an atom, all the way up to supermassive black. Black holes do not have infinite mass. So basically, a singularity is a point in space where a lot of matter is squeezed together in a very small space. But black holes do have intense gravitational force and that's probably cause the singularity have 0 volume and thus: Density = Mass / Volume(=0) = Infinite density and this density is what creates an infinite space-time curvature which gulps everything near in itself! Scientists can study stars to find out if they are flying around, or orbiting, a black hole.

Charles Q. Choi, Contributor. The mass of a black hole acts just like the mass from any other object. If you hover at a distance r from the centre of the black hole the gravity you feel is: a = G M r 2 1 1 r s r and as you approach the event horizon, i.e.

In the Law of Universal Gravitation, the force of gravity between two objects is equal to the gravitational constant (6.6731011 N (m/kg)2 ), times the mass of object 1 (m1) times the mass of object 2 (m2), all divided by the radius, or the distance between the centers of gravity of the two objects, squared. Answer (1 of 6): > Q: Do black holes have more gravity than stars? Black hole singularities have 0 volume, so any finite mass they might have will net infinite density, and infinite gravity (since you can get infinitely close to the central mass). As they compress so does time/activity so a black hole can never shrink infinite or become an infinite mass point. Back in the 1970's, Stephen Hawking came up with theoretical arguments showing that black holes are not really entirely black: due to quantum-mechanical effects, they emit radiation. (ISNS) -- The cores of black holes may not hold points of infinite density as currently thought, but portals to elsewhere in the universe, theoretical physicists say. 5,715. When you have a singularity matter does not go to infinity. But scientists can see how the strong gravity affects the stars and gas around the black hole. But black holes do have intense gravitational force and that's probably cause the singularity have 0 volume and thus: Density = Mass / Volume(=0) = Infinite density and this density is what creates an infinite space-time curvature which gulps everything near in itself! The theory of general relativity predicts that a sufficiently compact mass can deform spacetime to form a black hole. Henceforth I assume we do not speak about singularities, only of observable space up to the hole's event horiz. And here's one possible alternative (the string-theory "fuzzball"): You are right to question the concept of "infinite density". A: It depends on the size of the black hole and the distance to it. Not all black holes will have the same force of gravity, because they're not all the same size. So it also has infinite gravity, and sucks anything which is near it! In fact, very large black holes have very low density; like below 1 s.g. What *might* be infinitely dense is the "singularity" at the center of the black hole, if it exists. While we've never directly 'seen' a black hole, we know they exist and that they have some unintuitive effects on space and time. . 6 min read. The size of the object it and its shape can be ignored. A black hole has an infinite density; since its volume is zero, it is compressed to the very limit. Solutions to the equations of general relativity or another theory of gravity (such as supergravity) often result in encountering points where the metric blows up to infinity. communities including Stack Overflow, the largest, most trusted online community for developers learn, share their knowledge, and build their careers.

That would cause an infinite gravitational field. When the hole shrivels to a mass of about 10 .

do black holes have infinite gravity

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