Simple Animation to explain complex principles

This is a very good for those who have no idea about movements

As you young guys say.............this is really cool...........and simple to understand. 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 Rotary engine - an internal combustion engine, the heat rather than the piston movement into rotary movement Inline engine - it's cylinders lined up side by side