– How does a rice cooker know when the rice is done?

Question

– How does a rice cooker know when the rice is done?

In: 258

Answer 1

It depends on 3 things.

1. As a rule of thumb rice is done when all the water is boiled off.
2. When water is boiling it keeps the thing at 100C, any more energy just makes more water turn from liquid to gas.
3. When a magnet gets too hot it gets less sticky.

So they have a magnet that’s holding a electric connection to the heater that cooks the rice.
When you press the cook tab, you hear a clunk, that’s the magnet sticking.
The water in the cooking part with the rice starts boiling, when it’s gone the temperature starts going above 100C.
That temperature makes the magnet less sticky and it falls off, breaking the connection with the cooking parts.

That or it’s a boring temperature sensor and a microchip.