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Chess Knight Move

Find the country and its capital city, using the move of a chess knight. First letter is R. Length of words in solution: 6,6.

Correct answers: 49

The first user who solved this task is Fazil Hashim.

#brainteasers #wordpuzzles #chessknightmove

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Insulate your percussion instrument

How do you insulate your percussion instruments?
With xylofoam.

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Electric motor

In 1904, the first direct current, interpole, electric motor to be patented in the U.S. was issued to Mathias Pfatischer of Phildadelphia, Pennsylvania under the title "Variable Speed Motor" (No.775,310). His improvement was to "effect commutation without sparking, with a variable load as well as at variable speed and which is capable of rotation in either direction." The new design added auxiliary-field pole-pieces which were small as compared to the main pole-pieces.«

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