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What is the name for the boundary around a black hole beyond which events cannot affect the observer?
The "boundary" you're probably thinking of is called the event horizon. Past this point, the escape velocity of the black hole exceeds the speed of light, meaning nothing, including light, can escape it.
What happens if you throw a clock in a black hole?
If you were to throw a clock into a black hole, the extreme gravitational pull would distort the perception of time on the clock. As the clock approaches the black hole's event horizon, time would appear to slow down for an observer outside the black hole. Eventually, the clock's information would be lost beyond the event horizon.
How is the term 'event horizon' defined?
The event horizon is a "point of no return"; anything within the event horizon can't get out, even at the speed of light.An event horizon is the "surface" of a black hole. It is the line that is crossed right where the chaos stops and the actual hole begins. it is theorized that beyond this horizon, all of the laws of physics cease to exist. A single hydrogen atom becomes a billion mega-ton hydrogen bomb. an entire planet fits on the head of a needle, that sort of thing.In general relativity, an event horizon is a boundary in spacetime, most often an area surrounding a black hole, beyond which events cannot affect an outside observer. Light emitted from beyond the horizon can never reach the observer, and anything that passes through the horizon from the observer's side appears to freeze in place, with its image becoming more redshifted as time proceeds.
Why dont events affect the outside observer beyond the boundary of event horizon?
They do, but it depends on your distance from the black hole boundary of the event horizon.; i.e. within the ergosphere of a black hole or closer. Within this vicinity is where the gravitational attraction of a black hole starts to make life difficult. It is within the ergosphere that we find the accretion disk of the black hole. Matter falling onto a black hole can form an accretion disk heated by friction, forming some of the brightest objects in the universe. These bright objects are indicative of nuclear meltdown due to the stretching and compaction of matter as it nears the event horizon. However, further out "events" are more affected by more localized gravitational influence; i.e. the stronger gravitational influence involves the outside observer as part of a more localized event.
What is the speed of you if you get sucked into a black hole?
When you are near the event horizon, you would be close to the speed of light - from your own point of view. From the point of view of an outside observer, you would move slower and slower, and never quite reach the event horizon. This has to do with the queer distortion of space and time caused by the black hole.
What is the name for the boundary around a black hole beyond which events cannot affect the observer?
The "boundary" you're probably thinking of is called the event horizon. Past this point, the escape velocity of the black hole exceeds the speed of light, meaning nothing, including light, can escape it.
How is time changed in a black hole?
Mainly the following: As you approach the event horizon, time seems to pass normal - for you, and you will soon pass through the event horizon. For an outside observer, your time will be slower and slower, so you will never really reach the event horizon.
How does the black hole information paradox work if it takes forever for a distant observer for something to fall into it thus the black hole will evaporate before anything truly crosses the horizon?
That's just the observer's perspective though. As an object approaches the black hole, light emitted from it travels in all directions. Some enters the event horizon and is trapped by the black hole. Some will reach the observer. Once the object enters the event horizon, light emitted by it can only go one way, towards the black hole's singularity. No more light will reach the observer. So to the observer, the object will appear frozen at the edge of the event horizon, the image slowly fading as last of the emitted photons reach the observer. However while this happens, the object is within the event horizon, being pulled towards the singularity, and will eventually be crushed by it. Basically the observer can no longer observe an object once it passes the event horizon, but that doesn't affect what is happening to the object.
What happens if you throw a clock in a black hole?
If you were to throw a clock into a black hole, the extreme gravitational pull would distort the perception of time on the clock. As the clock approaches the black hole's event horizon, time would appear to slow down for an observer outside the black hole. Eventually, the clock's information would be lost beyond the event horizon.
Is the Event Horizon the surface of singularity?
No, the Event Horizon is outside the singularity.The singularity probably has no surface as it is an infinitesimal point.
How is the term 'event horizon' defined?
The event horizon is a "point of no return"; anything within the event horizon can't get out, even at the speed of light.An event horizon is the "surface" of a black hole. It is the line that is crossed right where the chaos stops and the actual hole begins. it is theorized that beyond this horizon, all of the laws of physics cease to exist. A single hydrogen atom becomes a billion mega-ton hydrogen bomb. an entire planet fits on the head of a needle, that sort of thing.In general relativity, an event horizon is a boundary in spacetime, most often an area surrounding a black hole, beyond which events cannot affect an outside observer. Light emitted from beyond the horizon can never reach the observer, and anything that passes through the horizon from the observer's side appears to freeze in place, with its image becoming more redshifted as time proceeds.
What is the escape velocity at the boundary of a black hole?
By definition, the event horizon is a boundary of a black hole at which escape velocity reaches "c", the speed of light. Hence, the event horizon defines a boundary, within which, events can't affect an outside observer; neither light nor matter can escape.
What is the outside of a blackhole called?
it is called a event horizon
Why nobody can enter the black hole?
You can - you just can never leave. According to special, and general relativity, it will appear ot an outside observer that you never reach the event horizon, but your local time says you will.
Why dont events affect the outside observer beyond the boundary of event horizon?
They do, but it depends on your distance from the black hole boundary of the event horizon.; i.e. within the ergosphere of a black hole or closer. Within this vicinity is where the gravitational attraction of a black hole starts to make life difficult. It is within the ergosphere that we find the accretion disk of the black hole. Matter falling onto a black hole can form an accretion disk heated by friction, forming some of the brightest objects in the universe. These bright objects are indicative of nuclear meltdown due to the stretching and compaction of matter as it nears the event horizon. However, further out "events" are more affected by more localized gravitational influence; i.e. the stronger gravitational influence involves the outside observer as part of a more localized event.
How much do black holes slow time down?
The degree to which time slows depends on the distance to the event horizon. From an outside perspective, time at the event horizon stops.
Could black holes be time warps?
Black holes do distort time. The closer you get to the event horizon of a black hole, the slower time goes. From the perspective of someone outside, time at the event horizon stops.
