Recent content by qmpash

A big, nasty kid who is playing all kinds of jokes on us.

Would you be interested in my "flat-earth" theory? :smile:

I don't mean to be flip with you but a supermassive object that doesn't emit light is, by definition, a black hole. It can be detected only by intense x-ray (or gamma-ray emission) and by gravitational effects on its "neighbors" or by lensing (previously mentioned.) Quasars and neutron stars...

To Naty, Many thanks for your reply. That is exactly what I was looking for.

I don't know what would satisfy you insofar as 'direct' evidence. So far, the only way (I know of) to detect a black hole is by it's gravitational effect on the motion of nearby stars or by gravitational lensing. Possibly, there may be some other phenomenon that would imitate the mass...

I do not believe that you are correct. Black holes are far more than " a theoretical concept" by Stephan Hawking. They were first suggested by equations from General Relativity and then by Schwartzchild. Supermassive black holes have been detected in the center of virtually every galaxy...

I was wondering, novice that I am, whether there is any theoretical limit to the size of a black hole. I know there are supermassive black holes that are equivalent in mass to billions of stars. Could a black hole ever encompass a mass the size of our universe or perhaps even more mass? Could...

There are much better explanations here but if you want a simplistic one, here it is. The "cat" is used to explain the duality that often appears in qm; for example the duality of photons (light.) Do one experiment, such as the Young dual slit experiment and you prove the wave nature of light...