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Although very tiny, each photon carries a small amount of momentum away from the asteroid, giving it a tiny kick.

I wanted the vehicles in the shot to be something that could be used for both Earth and for other planets, too.

In the shorter term, the bank needs to worry about a possible backlash against its incongruously generous pay policies.

In the initial stage of keyhole formation with small keyhole depth, the melt is easily forced up and out of the keyhole by recoil pressure.

But for the rest of the twentieth century, the backlash cycle seemed to have stopped.

Unlike the Kalashnikov rifles it copies, the SVD actually uses a lower-recoil system so as not to spoil the accuracy of a given shot.

For conservation of momentum, the atom must recoil with a momentum of this magnitude in the opposite direction.

It has a full length metal chasis insert, making it shoot more like a metal gun, with less "frame flex" during recoil.

Now, there has been a backlash against the backlash.