3 ms·
No, one still needs energy to accelerate the particles to actually create an impulse. Think of it as a (propeller) airplane, but instead of accelerating air, it
by claudius 13y ago
No, one still needs energy to accelerate the particles to actually create an impulse. Think of it as a (propeller) airplane, but instead of accelerating air, it uses the quasiparticles due to vacuum fluctuations.