The Black Hole Tipping Point

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by minutephysics 540,031

Thanks to for sponsoring this video! Check out their black hole course at Support MinutePhysics on Patreon! Link to Patreon Supporters: This video is about the Schwarzschild radius of a black hole, (its "event horizon"), and how much mass and density is required to reach the point of no return where an object like a star, neutron star, red giant, etc will collapse into a black hole singularity. You can calculate it yourself using just the volume equation for a sphere, and the equation for the Schwarzschild radius (and knowing the speed of light and Newton's gravitational constant). REFERENCES Lecture notes on black holes: Mass of cat: Schwarzschild radius: LIGO Neutron Star Binary Merger: Tolman-Oppenheimer-Volkoff Limit: Neutron Star Equation of State & Density: Neutron Star Radius: MinutePhysics is on twitter - @minutephysics And facebook - And Google+ (does anyone use this any more?) - Minute Physics provides an energetic and entertaining view of old and new problems in physics -- all in a minute! Created by Henry Reich