Napier's Bones (30 gen 1617 anni – 31 dic 1617 anni)
Descrizione:
Napier's Bones was invented by Scottish mathematician, John Napier. This is a computation device that has the multiplication table written on a series of rods. To make calculations, the user would have to change the vertical position of the rods.Aggiunto al nastro di tempo:
Data:
30 gen 1617 anni
31 dic 1617 anni
~ 11 months