The Black Hole Tipping Point

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Genre: Science & Technology

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Shared November 30, 2017

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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).


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:

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Created by Henry Reich