[ot][spam][crazy] Making Free Electricity out of a Water Bomb

[k]

I visited https://en.wikipedia.org/wiki/Linear_actuator which
describes and pictures some linear actuators.  They use a screw to
convert between linear and rotational force, and they are in media
drives of computers.

I also happen to have a DC motor that is geared for low.  When a DC
motor is forcefully turned, it becomes a generator with opposite
gearing.

So I might be able to try to make some kind of hijinxed form of this
if I took apart a dvd drive for its tiny linear screw!