At 07:10 PM 22/10/2013, you wrote:

>Dr. Robert L. Forward wrote that antimatter is a fuel with 200%
>efficiency, because it must react with an equal mass of normal matter
>that you can gather as you go (even in the interstellar space).
>
>Even better, you can use a tiny amount of antimatter to heat a really
>huge amount of plain matter and eject it at unbelievable speeds.
>
>Isaac

One could (in theory) make a tablet that would run continuously
for 25 years without recharging using only 25mg of antimatter as
fuel- use air for the other half. That's assuming 5W continuous,
which amounts to about 4GJ of energy.

Of course if all that energy was released suddenly (about a ton
of TNT equivalent) it would make a fairly big bang.

--sp

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