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Nescio224 t1_j4dy943 wrote

Small black holes evaporate faster than large black holes. If you have a black hole with mass as low as 50 neutron masses, it would basically decay instantly, releasing all its energy in a tiny explosion of light and particles. Even a black hole with a mass of 1 kg would only take 10^-16 seconds to evaporate.

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Durable_me OP t1_j4hibox wrote

But if you 'feed' them, will that prolong their lives?
Is there a formula that states how much matter needs to be added in what timeframe to sustain the black hole?

I suppose the smallest black hole will evaporate in 1 Plack second. Faster is not possible, so that is in fact the limit of the smallest black hole if I am right?
so the lifespan of 5,3891 x 10E-44 seconds

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