MadSci Network: Astronomy
Query:

Subject: Radiation emition from black holes...

Date: Wed Jun 17 11:29:17 1998
Posted by Miguel Canas
Grade level: 10-12
School: CRLS
City: Cambridge State/Province: MA
Country: USA
Area of science: Astronomy
ID: 898100957.As
Message:

I was searching through a page, that one of your previous 
professionals had recomended to me, on the subject of black holes, 
when I came across this quote in a paragraph "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." If this is true, that black holes emit 
radiation, then is the speed of radiation faster than the speed of 
light? Or is there something to this that I'm missing? I thought that 
the event horizon of a black hole has a gravitational pull with an 
escape velocity higher than that of the speed of light. If nothing can 
go faster than light, then why is there radiation emiting from a black 
hole?

There's so much to black hole's but I'm so fascinated by them now that 
I've got some questions answered, I'm glad that I found this sight to 
help answer my endless amount of questions and curiosity. Thanks 
again!


Re: Radiation emition from black holes...

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