We just learned about the Pulse Coder.
Another type of machine movement is Pneumatics, pronounced like new-mat-ix.
The word pneuma in Greek means "breath", and pneumatics means using air that is under pressure.
Some machines use pneumatics in big metal tanks with pressurized air, and some use pneumatics in tubes to push things along.
Pneumatics would even be if you had a balloon full of air, and you let the air out to have the balloon fly around the room.
That is using the air trapped in the balloon to push the balloon along.
(from: wikipedia - pneumatics)
Kid Facts - Blast from the past: Forensics
