A calculating instrument with Napier's rods (7 h 50 min, 18 nov 2018 ans – 20 h 53 min, 30 juill. 2019 ans)
Description:
In 1667 Sir Charles Cotterell, an English courtier and translator, devised a calculating instrument with Napier's rods, which included a wire-and-bead abacus for adding the partial products.Ajouté au bande de temps:
Date:
7 h 50 min, 18 nov 2018 ans
20 h 53 min, 30 juill. 2019 ans
~ 8 months