Napier's Bones (30 Jan 1617 Jahr – 31 Dez 1617 Jahr)

Beschreibung:

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.

Zugefügt zum Band der Zeit:

Datum:

Abbildungen: