The theory of black holes was first proposed in the 18th century by John Michell and Pierre-Simon Laplace, further developed by the German astronomer named Karl Schwarzschild, in 1916, based on the general theory of relativity of Albert Einstein, and increasingly popularized by Stephen William Hawking.
Actually Black Hole comply with all the laws of physics, including gravity. In 1687, champion Isaac Newton showed that all objects in the universe are connected via gravity. However on earth, when compared to electricity, magnetism, energy impressed pressure or gravity is the weakest. But unlike the conditions in the Black Hole.
Newton's discovery has been refined by Einstein. He said through his theory of relativity that have a massive objects distort space and time capable of continuous, well is this distortion that we perceive as gravity. So in theory this could be an explanation for why gravity Black Hole very large, to be able to suck the light.
All Black Hole identical, the difference is its mass, rotation about its axis, and the electric charge. The most remarkable of the Black Hole is when your spouse swallow an object (any object it is) then the characteristics of the object will be deleted.

