Napier’s Bones
Material Required: Cardboard or chart paper. John Napier (1550-1617), the man who invented the logarithmic tables also made this simple calculation device. Napier’s bones can be used for multiplying a large number with a...
Material Required: Cardboard or chart paper. John Napier (1550-1617), the man who invented the logarithmic tables also made this simple calculation device. Napier’s bones can be used for multiplying a large number with a...