Here are the 9 greatest mechanical principles and
inventions, which show the greatness of the human mind.
Simple animation to explain complex principles:
1: Aircraft Radial Engine
2: Oval Regulation
3: Sewing Machines
4: Malta Cross movement - second hand movement used to
control the clock
5: Auto Change file mechanism
6: Auto Constant Velocity Universal Joint
7: Gun Ammunition loading system
8: Rotary Engine - an internal combustion engine,
the heat rather than the piston movement into rotary movement
9: Engine - it's cylinders lined up side by side