Rules

Guess the Flex WORDLE in 3 tries. After each try, the color of the tiles will change to show how close your guess is to the solution.

If the tile becomes GREEN, your number or operation is located at correct place. If the tile becomes RED, your number or opeartion exists within the expression, but at different place.

Joke Of The Day

13 year old girls

On This Day

Edison patent In 1902, Thomas A. Edison was issued a U.S. patent for a "Reversible Galvanic Battery" (No. 692,507), a design for a permanent battery with a large capacity per unit of weight. Finely divided cadmium is used as the oxidizable element. An oxide of nickel or cobalt is used as the depolarizer, mixed with a flake-like conducting substance such as graphite. According the patent, "the oxid of nickel or cobalt is raised to a superperoxid condition when charged. In discharging the nickel or cobalt oxid will be reduced to a lower state of oxidation, while the metallic cadmium will be oxidized." The active materials are packed under pressure in perforations of a conducting plate. The nickel oxide is preferred as less costly and less soluble in the alkaline electrolyte.

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