This ‘free energy’ type of battery uses humid air to generate electricity.
https://www.theguardian.com/science/2023/jul/02/it-was-an-accident-the-scientists-who-have-turned-humid-air-into-renewable-power
Electronics & Stuff, a lot about LEDs
This ‘free energy’ type of battery uses humid air to generate electricity.
https://www.theguardian.com/science/2023/jul/02/it-was-an-accident-the-scientists-who-have-turned-humid-air-into-renewable-power