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EvC Forum ⇒ Science Forums ⇒ Big Bang and Cosmology ⇒

Black holes collision

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Author Topic:   Black holes collision
cavediver
Member (Idle past 3666 days)
Posts: 4129
From: UK
Joined: 06-16-2005

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Message 16 of 17 (471196)
06-15-2008 2:34 PM 		Reply to: Message 15 by jag
06-15-2008 2:26 PM

Re: Mundane response #1
If energy has mass, how can it travel at the speed of light?
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Unfortunately, there are several concepts all described as mass. A particle will travel at the speed of light if it has zero rest-mass. But that is not the same as its gravitational mass.
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 Message 15 by jag, posted 06-15-2008 2:26 PM jag has replied
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jag
Member (Idle past 5776 days)
Posts: 41
Joined: 06-15-2008

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Message 17 of 17 (471201)
06-15-2008 2:45 PM 		Reply to: Message 16 by cavediver
06-15-2008 2:34 PM

Re: Mundane response #1
I think of mass a physical presence that has itertia. If energy has gravitational mass, does that mean that a larger collection of energy would have a measurable gravitational pull on a body of mass?
​
If so: How sensitive are our best gravitational sensors and how much energy would be required to be detectable?
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