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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).
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:
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Minute Physics provides an energetic and entertaining view of old and new problems in physics — all in a minute!
Created by Henry Reich
