Fredxx wrote
Rod Speed wrote
Chris Green wrote

Turning a handle or pushing a lever
is simply 'work' as in force x distance.

But pressing it with your finger isnt either.

So when you press this 'switch' with a finger, you're not applying a force
which moves a finite distance?

Corse you are, but its the kinetic energy of the finger that
is what generates the small amount of power that powers
the chip that transmits the zigbee signal to the base.

Or isn't "work = force x distance" any more?

Pity its the kinetic energy of the finger that is what
generates the small amount of power that powers
the chip that transmits the zigbee signal to the base.

When did that change?

It didnt, stupid.