PBS
Singularities Explained
Math versus physical reality ... who wins? A short video discusses singularities, starting with division by zero in rational functions and moving on to real-world examples. It covers population growth doomsday equations, Navier-Stokes...
PBS
Pbs Learning Media: Crash Course Astronomy: Black Holes
Stellar mass black holes form when a very massive star dies, and its core collapses. Black holes come in different sizes, but for all of them, the escape velocity is greater than the speed of light, so nothing can escape, not matter or...
University of Nottingham
Sixty Symbols: Symbols of Physics and Astronomy: Black Holes and the Schwarzschi
By calculating the Schwarzschild radius, a University of Nottingham astronomer figures out how small the Earth would have to become in order to become a black hole. Learn what the Schwarzschild radius is, how it came to be, and how it is...
Crash Course
Crash Course Astronomy #34: Binary and Multiple Stars
Stellar mass black holes form when a very massive star dies, and its core collapses. Black holes come in different sizes, but for all of them, the escape velocity is greater than the speed of light, so nothing can escape, not matter or...