- A semiconductor Peltier device generates electricity when there is a temperature
difference between its two sides. The fan turns in either direction depending on which
leg is hot.
- Turn the hotplate on HI ahead of time. When the water starts boiling, turn the hotplate
- Add ice water to one cup until it is full.
- Fill the other cup with hot water and put the lid on to retain heat.
- Within minutes the fan will start and continue running for ~10 minutes.
(set out a hot pad for teakettle)