this post was submitted on 10 Jul 2025
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Need an explanation? The smallest possible black hole is called a Planck particle. It should have a mass of a Planck mass, a size of an Planck length, should evaporate in a Planck time, releasing a Planck energy.
By the way, the evaporation of a Planck particule should generate a power of P = Planck energy / Planck time = 3,629 × 10^52 W --> 36.29 million million million million million million million Gigawatts. More than enough to power a time machine.
Ooookay. I feel like I've heard Planck length/time used in other (perhaps wrong) contexts. So the mass and energy seemed wildly large by comparison.