Eugene Leitl wrote:
>
> Speculations of manufacturing miniature black holes by focusing the
> output of e.g. Dyson sphere lasers on a small region of space have
> been discussed here before.
>
> Iirc Sol is losing about 2 MT/s mass (though probably mostly to
> protons which go out as solar wind).
Not protons, photons- 1 AU is 150E6 km = 1.5E11 m, sunlight is 1350 W/m2 at
earth, so total power out = 4piR^2(1350) = 3.8E26 W. E=MC^2, so
P = MdotC^2 and Mdot = P/C^2 = 4.2E9 kg/s = 4.2 MT/
Four million tonnes of energy per second is one hell of a lot of power.
Current total human power usage is around 10 terawatts, give or take an
order of magnitude... or about 0.01 g/s.
Total insolation on Earth is about 1.7E17 W, or about 1.9 kg/s.
Four million tonnes of energy per second is one HELL of a lot of power.
With a really *big* chirped diffraction grating (tens of lightseconds on a
side) you could create attosecond pulses with megatonne mass.
-- Doug Jones, Freelance Rocket Plumber [*] to avoid the circular firing squad's dilemma, more than two beams are needed so that missed pulses don't fry the opposite launch optics. Four beams originating at the corners of a tetrahedron should work... but more would produce a smoother implosion. Asymmetries in the implosion will cause the resultant hole the shoot off in the opposite direction. Thus two beams meeting at right angles could create a hole shooting off at .7 c