[ELI5] How does a rice cooker “know” the timing to switch from cook to warm when there’s no more water in it?

Question

[ELI5] How does a rice cooker “know” the timing to switch from cook to warm when there’s no more water in it?

In: 825

Answer 1

The cooker uses a magnet to trigger the heater. When the water is all gone the temp of the bowl rises over the curie (?) Temp of the magnet material amd it looses its magnetic property, which turns off the heater.

It really is an amazing little feat of engineering.