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A comment on Voyager 1 hears the hush of interstellar plasma. Parent comment

Re:Voyager 1 hears the hush of interstellar plasma by willis936 on Tuesday May 11, 2021 @08:22AM (#27117190)
That is absurd. It is E=MC^2 where M is 0.1% of the total mass of the reactants.

100% of the mass difference is converted into energy.

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Re:Voyager 1 hears the hush of interstellar plasma by varjag on Tuesday May 11, 2021 @08:48AM (#27117430)
The GP was talking in relation to W/Kg, and the output per Kg is definitely not e=mc^2. It helps reading things in the context.
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Re:Voyager 1 hears the hush of interstellar plasma by StavrosK on Tuesday May 11, 2021 @10:47AM (#27118707)
You are correct, though it would help to clarify that you're correcting the GP on the "per kilo" part, and not the "energy" part.

I agree, if you're deploying 1 kg of fissile material, only 0.1% of that will be converted to energy. We should talk about energy per mass of fissile material, not energy per mass of "mass difference".

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