Karl Schwarzschild: the man who predicted black holes.

Karl Schwarzschild was a German mathematician and astronomer who predicted the existence of black holes.

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[christiangodin]

John Michell (1783) and Pierre-Simon Laplace (1796) were the first people to propose the concept of “dark stars” or object which, if compressed into a sufficiently small size, would have an escape velocity which exceeded even the speed of light.

[giorgiobarchiesi]

Please check the name pronuntiation
It’s more like shvartshield

[justgeorgeous]

so how come roger penrose got the nobel prize?

[shawns]

A Schwarzchild radius is a fictional term. For some reason people don't know that Einstein said that singularities are not possible. In the 1939 journal "Annals of Mathematics" he wrote "the essential result of this investigation is a clear understanding as to why the Schwarzchild singularities do not exist in physical reality. Although the theory given here treats only clusters whose particles move along circular paths it does seem to be subject to reasonable doubt that more general cases will have analogous results. The Schwarzchild singularities do not appear for the reason that matter cannot be concentrated arbitrarily. And this is due to the fact that otherwise the constituting particles would reach the velocity of light."
We have all heard the phrase "mass becomes infinite at the speed of light" this phenomenon is illustrated in a common relativity graph with velocity (from stationary to the speed of light) on the horizontal line and dilation (sometimes called gamma or y) on the vertical line. Mass that is dilated is smeared through spacetime relative to an outside observer. Even mass that exists at 75% light speed is partially dilated.
General relativity does not predict singularities when you factor in dilation. Einstein is known to have repeatedly spoken about this. Nobody believed in singularities when he was alive for this reason.
Wherever you have an astronomical quantity of mass, dilation will occur because high mass means high momentum. There is no place in the universe where mass is more concentrated than at the center of a galaxy.
According to Einstein's math the mass at the center of our own galaxy must be dilated. In other words that mass is all around us because as the graph shows we are still connected to it. This is the explanation for the abnormally high rotation rates of stars in spiral galaxies. The missing mass is dilated mass.

[budokan]

The true pronunciation of his name -> Schwarz (like (Schwarz)enneger) and shild (like shield)

[MounirKadiri-xc]

Einstein énonce la courbure de l'espace mais Schwarzschild l'a exprimée mathématiquement, c'était un géant qu'on éclipsait pourquoi ?.

[Mysticism]

It is not Schwarzs child it is translated: Black (Schwarz) and Shield (schild) making it Blackshield and not Schwarzs child! Cool that you make these video’s but get your facts and pronunciations right Sir!

[cutback]

"predicted" .. lol. There is NO SUCH THING AS A BLACK HOLE