Recent content by A_Paradox

The Fortyseven, The expanding gas which has driven the projectile out of the gun barrel, is extremely hot and, by definition if you like, the 'speed of sound' within that gas is much greater than that of the cool atmosphere. This means that the projectile is probably still within the...

Why do you want to know?

A sin wave representing the motion of a reciprocating piston, is a representation of the motion of the piston; it is not the piston itself. It seems to me that Mr Omega has run afoul of the rocky reef of absolutist [or perfectionist] thinking. what I mean is that, like Zeno of long ago, the lure...

Apart from internal sonic vibrations, which are not what the question appears aimed at, it must be the case that the piston "stops" going up, then goes down, until it "stops" going down, after which it starts to go up again. My question is: Why is this an issue?