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Old Feb 28th 2010, 02:29 PM   #1
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Black hole event horison

Bearing in mind, that I am relatively new to the subject, I would appreciate it if someone could enlighten me on the following:

1. I would like to know how a black hole interacts with it's surroundings if most of it's mass is situated inside the event horison? Since it is forbidden for anything to escape a black hole beneath the event horizon, how does gravity manage to overcome this restriction.

2. Is a gravity wave part of the electromagnetic spectrum,

3. is it simply an effect of gravity or does it cause gravity?
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Old Sep 26th 2010, 06:29 AM   #2
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Originally Posted by YellowPeril View Post
Bearing in mind, that I am relatively new to the subject, I would appreciate it if someone could enlighten me on the following:

1. I would like to know how a black hole interacts with it's surroundings if most of it's mass is situated inside the event horison? Since it is forbidden for anything to escape a black hole beneath the event horizon, how does gravity manage to overcome this restriction.

2. Is a gravity wave part of the electromagnetic spectrum,

3. is it simply an effect of gravity or does it cause gravity?
I suggest you read a popular science book on the subject eg. A Brief History of Time.
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Old Oct 12th 2010, 09:15 AM   #3
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Originally Posted by YellowPeril View Post
Bearing in mind, that I am relatively new to the subject, I would appreciate it if someone could enlighten me on the following:

1. I would like to know how a black hole interacts with it's surroundings if most of it's mass is situated inside the event horison? Since it is forbidden for anything to escape a black hole beneath the event horizon, how does gravity manage to overcome this restriction.
"Gravity" is not a "thing" so that restriction does not apply.

[quote[2. Is a gravity wave part of the electromagnetic spectrum,[/quote]
No.

3. is it simply an effect of gravity or does it cause gravity?
I am not sure what you mean by "an effect of gravity" but gravity waves definitely do not cause gravity. A gravity wave is a "ripple" in the gravitational field. While all accepted versions of general relativy predict the existance of gravity waves, none have ever been detected.
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