[extropy-chat] (Link) Antihydrogen Propulsion

[Hara Ra]

I remember doing about the same calc about blammo the world. However, 1 gm 
in NYC would certainly be noticeable.

At 01:37 PM 10/25/2004, you wrote:
>Hara Ra writes:
>  > Anyway, 1g or more antimatter is serious stuff.
>
>  Just to add a little more perspective, a 20 megaton hydrogen bomb
>  annihilates about a kilogram of matter. So macroscopic quantities of
>  antimatter are indeed to be taken seriously, but short of truck loads
>  not blow up the world seriously.
>
>  Literally blowing up the world, as in generating a yield comparable
>  to the gravitation binding energy of the planet and accelerating the
>  residue cloud of planet Earth to escape velocity, would require a
>  smidge more that a million, million tons of antimatter, eg:

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=   Hara Ra (aka Gregory Yob)    =
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