A calculating instrument with Napier's rods (7 ore 50 min, 18 nov 2018 anni – 20 ore 53 min, 30 lugl 2019 anni)
Descrizione:
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.Aggiunto al nastro di tempo:
Data:
7 ore 50 min, 18 nov 2018 anni
20 ore 53 min, 30 lugl 2019 anni
~ 8 months