Editing 2780: Physical Quantities
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;Schwarzschild radius | ;Schwarzschild radius | ||
− | The {{w|Schwarzschild radius}} of a black hole refers to the event horizon: the radius beyond which light cannot escape. Curling up in a ball tends to reduce people's radii, | + | The {{w|Schwarzschild radius}} of a black hole refers to the event horizon: the radius beyond which light cannot escape. Curling up in a ball tends to reduce people's radii, while making them more spherical and easier to measure, so {{w|Karl Schwarzschild}}'s is given as 0.34 m, corresponding to a black hole of about 40 times the mass of Earth. |
;Broca's area | ;Broca's area |