Napier's bone


  •        Napier's Bone was invented by John Napier who was a Scottish mathematician.

  •         It is a device consisting of 10 rods engraved with numbered parts. Each rod was further divided into 9 diagonal number parts.

  •          The purpose of Napier's Bone is to extract square roots, divisions, multiplications.

    source: pinterest.com

  •         The features of Napier's Bone are as follows:  

        a) It helps in rapid calculations,

        b) It is a small device of calculation.

        c) Usually it is made of wood.


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