Monday, July 22, 2013

[aaczilkz] Time to destroy the earth

We calculate the amount of time needed to generate enough energy to overcome the gravitational binding energy of the earth = 2 * 10^32 J.

Total worldwide electricity production = 20000 TWh/yr
Time needed to destroy the earth = 3 trillion years

Power production by our human civilization is quite puny compared to astronomical objects.

Solar power = 400 YW
Time needed = 6 days

Deneb = 8 * 10^31 watts
Time needed = 3 seconds

R136a1 = 3 * 10^33 watts
Time needed = 60 milliseconds

Supernova peak luminosity = 10^36 watts
Time needed = 200 microseconds

Quasar = 10^40 watts
Time needed = 20 nanoseconds

Gamma ray burst = 10^45 watts
Time needed = 200 femtoseconds

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