Is it like when you flash a light into a black hole you can't see the light? Or what lol? I don't even know if I understand my own question! And what is a black hole is it a rip in the universe?
2007-11-10 15:59:41 · 7 answers · asked by Celeritas 5 in Science & Mathematics ➔ Astronomy & Space
A black hole is created when a star collapses in on itself. As the matter in the star gets denser and denser the gravity becomes even more powerful causing it to collapse further. This goes on and on and on. Eventually it completely collapses in on itself and the gravity becomes so powerful that it even pulls the photons (light) into its center of gravity.
2007-11-10 16:22:47 · answer #1 · answered by Woden501 6 · 0⤊ 0⤋
Its complicated.
The gravity that a black hole produces because of its immense mass is so great that nothing can travel fast enough to escape it.
You've heard about "escape velocity" - the speed an object has to travel to escape a planet or moon or whatever.
For Earth is 11.2 km/sec.
For a black hole (at its event horizon) the escape velocity is equal to the speed of light. That point where the escape velocity is equal to the speed of light is called the "event horizon".
So not even light moves fast enough to get out of a black hole once it goes past the event horizon.
A black hole is a point in space where enough mass has collected together (for example a massive star that collapses in on itself) that it basically folds in on itself. Nothing, not even light, can escape so it's like a hole, and light can't escape so it's black.
2007-11-11 00:11:19 · answer #2 · answered by Anonymous · 0⤊ 0⤋
It means the escape velocity is greater than the speed of light, so any light beam starting at a black hole would be pulled back by gravity before it could get very far. Yes, Einstein says light is pulled by gravity just like matter, even though it has no mass.
2007-11-11 00:05:44 · answer #3 · answered by campbelp2002 7 · 0⤊ 0⤋
black holes have a lot of mass... in fact it is due the the massive mass that it became a black hole... the more mass the stronger the gravity... the black hole has so much mass and so much gravity that it clapses into itself... and the gravity suck every thing into it... even light cant escape (photon)...any light that comes near it... with be pulled in just as apple falls downward toward the earth. so if you shine your light into the black hole... the light will not be reflected back.
it is a misconception that people thing black hole is a rip in space... things just fall into it... the name is what caused the confusion... when early scienitsts observed the skys for star and galaxies, they used radio/microwaves to detect their existance... they see an area where its black and nothing seems to be coming back from it, they named it black hole... but its not a rip in space, a massive sphere with highest gravity/density possible, that the theoratical physicists call it singularity.
2007-11-11 00:06:47 · answer #4 · answered by Allen C 3 · 0⤊ 0⤋
light is a form of radiation. When you turn on alight, it comes out from the torch and hits stuff. Some of it is absorbed, some si refelcted- the frequencies that are absorbed/reflected determien the colour. A black hole, however, absorbs all light aimed at it; none can get out.
This also means that if you were inside one, and turned a light on, I would not see it. In fact, no information of any kind can get out of a black hole.
2007-11-11 01:04:35 · answer #5 · answered by Bob B 7 · 0⤊ 0⤋
it means that a black absorbs any amount of light . u cant even focus light on light before u focus only it absorbs the light.
2007-11-11 00:04:17 · answer #6 · answered by chocky gal 2 · 0⤊ 0⤋
black holes sucks all things near it....even light....
2007-11-11 01:53:46 · answer #7 · answered by ken 3 · 0⤊ 0⤋