Professor of science and agriculture, Haim Rabinovitch discovered that by using units made of slices of potato quarters located between the copper cathode and a zinc anode connected with wire can light the room with LED lights up to 40 days.
- They are chosen because the world abundant in potatoes.
- Potatoes can grow almost everywhere, including tropical and subtropical climate.
Potato is not itself a source of energy. By acting as a bridge between all the metal, potato allows electrons to move freely through the wire, as it helps to provide electricity