Commodities used to build apartment blocks, such as iron (girders) and copper (wires), have recovered slightly from their recent swoon, partly in the hope that China's property market is also stirring.
For EVs, pressing on the accelerator changes the frequency of current driven into the wires of the stator, in turn increasing the rate at which the rotor spins.
In the factory, sheets of copper move along a special product mover four stories above the floor of the factory. The sheets then drop into a hot furnace. Next come pieces of copper wire. Out of the furnace comes liquid copper.
Could it be that we go to the hardware store, pick up a spool of copper wire, get some wire cutters, a little clip-clip, saw it all up and then, bam—we have our printed circuit board?