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You will always find me in t...

You will always find me in the past. I can be created in the present, But the future can never taint me. What am I?

Correct answers: 61

The first user who solved this task is Djordje Timotijevic.

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Mimes

Q: What's black and white and red all over?

A: Mimes in a chainsaw fight.

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Alkaline dry-cell patent

In 1960, a U.S. patent was issued for an alkaline dry-cell to P.A. Marsal, Karl Kordesch and Lewis F. Urry who assigned it to the Union Carbide Corporation, the manufacturer of Eveready batteries (No. 2,960,558). Compared to the existing carbon-zinc dry-cells, it offered an appreciable increase in life-span and efficiency during heavy continuous drains. Its construction used an alkaline electrolyte, manganese dioxide as depolarizer, a zinc powder-gel anode, and certain additives such including mercury and electrolyte-creep inhibitors. The patent gave practical details for commercial production. The patent claimed that whereas four cells in series of the carbon-zinc type gave 4.5 volts to power a 1.25-amp bulb for 45-min to 1-hr, the new alkaline design gave good brilliance after 6 to 7 hours.«

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