4 ms·
Fission is not anywhere near E=MC^2. That would be matter/antimatter annihilation.
by varjag 6y ago
Fission is not anywhere near E=MC^2. That would be matter/antimatter annihilation.
- willis936 6y agoIt is E=MC^2 though. 0.1% of the mass is converted into energy.
- varjag 6y agoNo, it's E=(0.001M)C^2
- willis936 6y agoThat 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.
- varjag 6y agoThe 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.
- StavrosK 6y agoYou 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".
- whatshisface 6y agoWindup toy cars are also E=mc^2.
- prewett 6y agoE = mc^2 implies that mass (m) is being converted to energy (E), and a windup toy car is definitely not converting mass to energy. Windup cars get their energy from torsional springs, which are E = (1/2) k theta^2.
- whatshisface 6y ago>and a windup toy car is definitely not converting mass to energy Ah, but it is. E=mc^2 is always true in the reference frame where the object is stationary. (We assume that we are co-moving with the windup car.) A spring under torsion is heavier than an unwound spring.
- Chris2048 6y ago> A spring under torsion is heavier than an unwound spring Does it have more (invariant) mass?
- whatshisface 6y agoYes.