The Incredible "Glowing" Pickle and Onion and Potato and...
There are many demonstrations about electrical conductivity that are illuminating, but the incredible glowing pickle is the most dramatic and eye-catching. In this paper we describe how to achieve the same effect with an onion, a potato, a head of cabbage, and a grapefruit, as well as a simple and safe device to hold these foods. An explanation as to the mechanism of the glowings is also described.
Weimer, P. M.,
& Battino, R.
(1996). The Incredible "Glowing" Pickle and Onion and Potato and.... Journal of Chemical Education, 73 (5), 456-457.