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{ Daily Archives } Monday, November 2004

The Tale of Zero

A friend of mine asked me about the history of Zero which led me to the Wikipedia entry on Zero which led me to a Professor’s page on the discussion of zero and why division by zero is undefined. Something that should be taught in grade schools but is probably forgotten by many many people […]

Photocapacitor aka solar cell and battery combined

This might be useful. A Japanese reseacher has managed to combine a solar cell and a battery into one structure. They dub it the photocapacitor. Seems currently that the charging voltage and the charging-discharge capacity need to be increased to be useful at a practical level. We can translate that as, “it works, but it […]