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[Phys-L] Electroluminescence Demo

Mix 1 tablespoon baking soda in 1 pint water.
Cut two electrodes from an aluminum pie dish
Place the elctrodes on opposite sides of a jam-jar.

Connect the electrolytic cell in series with a 75 watt lamp
to a 120 volt AC line supply - or better, through a 1:1
isolation transformer. Care!

The light quickly dims.
In a dark room, the electrodes glow.

See <http://home.earthlink.net/~lenyr/borax.htm>

What is the mechanism?


Brian Whatcott Altus OK Eureka!
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