hey guys can you give me info about black holes.?

Question

P.S dont give webs and please good answers

Answer 1

When a star collapses to half its radius, and there is no change in mass, gravitaion at its surface is multiplied by 4. as determined by the inverse square law. If a star were to collapse to a tenth of its radius, then your weight at its surface would be 100 times as much. Therefore if the star kept shrinking, then the gravitational feild at the surface would become stronger. The velocity required to escape, the escape velocity, would increase. If a star such as our sun collapses to a radius of les than 3 km, then the escape velcoity from its surface would exceed the speed of light, and nothing -- not even light--could escape! The sun would be invisable, it would be a black hole.

The sun has to little mass to experience such a collapse, but when some stars of greater mass reach the end of their nuclear resources, then they undergo collapse. And, unless rotation is high enough, the collapse continues untill the stars reach infinite densities. Gravitation near these shrunken stars is so enormous thant light can not escape their vicinity. They have crushed themselves out of visible existance. The results are black holes, which are completely invisible.

A black hole is no more massive than the star from which it collapsed, so the gravitational feild in regions at and greater than the original stars radius is no different after the stars collapse than before. But, at closer distances near the vicinity of a black hole, the gravitational feild can be enormous -- a surrounding warp into which anything that passes to close -- light, dust, or a space ship--is drawn. astronaughts could enter the fringes of this warp and, if they were in a powerful spaceship, they could sill escape. After a certain distance, however, they could not, and they would disapear from the observable universe. any object falling into a black hole would be torn to peices. No feature would survive except its mass, its angular momentum (if any), and electric charge (if any).

Strong evidence points to black holes being at the centre of ours and many other galaxies. Stars are circling in a powerful gravitational feild around an apparantly empty centre. This gravitational influence on nearby matter are how black holes are detected.

Answer 2

Black hole is understood by many of us that are not well versed in Relativity theory , as interpreted By George Gamow,and Stephen Hawking, as burned out Stars . The Russians call them frozen star because they no longer radiate heat . Hence no light comes out of them.That would mean we really cant see them visually. How many stars have burned out in the Universe .I dont really know.Pehaps the Astronomers and cosmologist would know the exact number. This is all i can Understand about a black hole since I have never seen one.What the need for them is or what will happen to them is a good scientific dilemma.,

Answer 3

To put it in an easy answer, it a dark swirling hole of dark matter with a suction so powerful, nothing can escape it. In scientifically correct words, it is a swirling hole, kinda looks like a snail shell. In the center, a large black circle, on the outside, a dark circle like structure. These "holes" are produced after a supernova, as a end result. As these vacuums of space come by, it "eats" anything in it's path. Even the fast light cannot escape. Since you cannot see it, it is kinda hard to identify. But with suction power and the mass, any heat vision thing could find one. And because they suck in light, when it moves past a light source, it bends the light. Hope my info helps!

Answer 4

Black holes are the result of collapsed stars. The resulting gravity pull of a star going (super)nova pulls in everything, including light. Scientists believe there is a black hole at the center of our galaxy.