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GeneralRe: Event Horizon Telescope will soon take the first black hole photo Pin
Mark_Wallace20-Feb-17 20:56
Mark_Wallace20-Feb-17 20:56 
GeneralRe: Event Horizon Telescope will soon take the first black hole photo Pin
Sander Rossel20-Feb-17 21:12
professionalSander Rossel20-Feb-17 21:12 
GeneralRe: Event Horizon Telescope will soon take the first black hole photo Pin
Mark_Wallace20-Feb-17 21:41
Mark_Wallace20-Feb-17 21:41 
GeneralRe: Event Horizon Telescope will soon take the first black hole photo Pin
Sander Rossel21-Feb-17 6:53
professionalSander Rossel21-Feb-17 6:53 
GeneralRe: Event Horizon Telescope will soon take the first black hole photo Pin
Mark_Wallace21-Feb-17 13:33
Mark_Wallace21-Feb-17 13:33 
GeneralRe: Event Horizon Telescope will soon take the first black hole photo Pin
Daniel Pfeffer20-Feb-17 21:20
professionalDaniel Pfeffer20-Feb-17 21:20 
GeneralRe: Event Horizon Telescope will soon take the first black hole photo Pin
Mark_Wallace20-Feb-17 21:44
Mark_Wallace20-Feb-17 21:44 
GeneralRe: Event Horizon Telescope will soon take the first black hole photo Pin
Daniel Pfeffer20-Feb-17 21:59
professionalDaniel Pfeffer20-Feb-17 21:59 
A black hole in vacuum (no mass nearby) has a temperature that is inversely proportional to its mass. This means that any black hole of stellar mass will have a temperature so low that it will absorb energy from the Cosmic Background Radiation, rather than radiate it.

If the black hole has mass nearby, it will typically "swallow" some of this mass. As the mass approaches the black hole it will typically (according to our models) form into an accretion disk. Collisions in the accretion disk (and other events) will cause the temperature of the disk to rise, making it radiate in the electromagnetic spectrum.

As matter falls into the Event Horizon, it will also release gravitational waves. These are only detectable in catastrophic cases (such as the merger of two black holes).

A very small black hole will have a temperature above that of the background, and so will radiate. This will cause it to shrink further, raising its temperature and causing it to radiate even more. Eventually, it will disappear in a blast of radiation.
If you have an important point to make, don't try to be subtle or clever. Use a pile driver. Hit the point once. Then come back and hit it again. Then hit it a third time - a tremendous whack.

--Winston Churchill

GeneralRe: Event Horizon Telescope will soon take the first black hole photo Pin
Mark_Wallace20-Feb-17 22:29
Mark_Wallace20-Feb-17 22:29 
GeneralRe: Event Horizon Telescope will soon take the first black hole photo Pin
Vark11121-Feb-17 8:38
Vark11121-Feb-17 8:38 
GeneralRe: Event Horizon Telescope will soon take the first black hole photo Pin
Mark_Wallace21-Feb-17 13:41
Mark_Wallace21-Feb-17 13:41 
GeneralRe: Event Horizon Telescope will soon take the first black hole photo Pin
Joe Woodbury20-Feb-17 16:50
professionalJoe Woodbury20-Feb-17 16:50 
NewsWindows wins the desktop, but Linux takes the world Pin
Kent Sharkey20-Feb-17 8:21
staffKent Sharkey20-Feb-17 8:21 
GeneralRe: Windows wins the desktop, but Linux takes the world Pin
Kornfeld Eliyahu Peter20-Feb-17 19:49
professionalKornfeld Eliyahu Peter20-Feb-17 19:49 
GeneralRe: Windows wins the desktop, but Linux takes the world Pin
Mark_Wallace20-Feb-17 20:54
Mark_Wallace20-Feb-17 20:54 
NewsHow previous owners can potentially still access their cars long after they've sold them Pin
Kent Sharkey20-Feb-17 8:20
staffKent Sharkey20-Feb-17 8:20 
GeneralRe: How previous owners can potentially still access their cars long after they've sold them Pin
R. Giskard Reventlov20-Feb-17 8:38
R. Giskard Reventlov20-Feb-17 8:38 
GeneralRe: How previous owners can potentially still access their cars long after they've sold them Pin
Mark_Wallace20-Feb-17 10:02
Mark_Wallace20-Feb-17 10:02 
NewsMicrosoft accelerates HoloLens V3 development, sidesteps V2 Pin
Kent Sharkey20-Feb-17 8:18
staffKent Sharkey20-Feb-17 8:18 
NewsUpdate to the delay of Microsoft February Security Updates Pin
Marco Bertschi20-Feb-17 0:12
protectorMarco Bertschi20-Feb-17 0:12 
GeneralRe: Update to the delay of Microsoft February Security Updates Pin
Mark_Wallace20-Feb-17 0:13
Mark_Wallace20-Feb-17 0:13 
GeneralRe: Update to the delay of Microsoft February Security Updates Pin
Marco Bertschi20-Feb-17 0:14
protectorMarco Bertschi20-Feb-17 0:14 
GeneralRe: Update to the delay of Microsoft February Security Updates Pin
Mark_Wallace20-Feb-17 0:31
Mark_Wallace20-Feb-17 0:31 
NewsDisney built a room that's basically a giant iPhone charger Pin
Kent Sharkey19-Feb-17 6:47
staffKent Sharkey19-Feb-17 6:47 
GeneralRe: Disney built a room that's basically a giant iPhone charger Pin
megaadam19-Feb-17 22:06
professionalmegaadam19-Feb-17 22:06 

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