Logarithms were developed by a fellow named John Napier and

Logarithms were developed by a fellow named John Napier and he invented a device called \"Napier\'s Bones\", that was used to calculated with logs. in 30 words or less, simply tell me how it worked.

Solution

Multiply only placing \"bones\" corresponding to the multiplier and multiplicant on the left and right side respectively, and product can be read by adding pairs of numbers in the row determined by the multiplier.

Good luck