Gears can change the direction or the speed of movement. As there are teeth around the edge of the gears they grip together and so can withstand a greater force, enabling them to move large items ...

[Steve Mould] shows us a different take – the experimentation kit called Spintronics, which goes the mechanical way, using chains, gears, springs and to simulate the flow of current and the ...

followed by close-ups of different gear types, including worm and bevel gears. The film then pieces together a basic motor, labeling and tracking energy flow through its gear system, illustrating ...