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Napier's bones, c 1690. John Napier (1550-1617), discoverer of logarithms, also created this popular calculating tool known as Napier's cylindrical 'rods' or 'bones'. Napier's rods reduced multiplication to a sequence of simple additions and could also be used for division and to calculate square roots.
Location
Science Museum/London/Great Britain
Unique Identifier
ART393556
Type
Image
Purpose
Public
Size
3504px × 2720px
Photo Credit
SSPL/Science Museum / Art Resource, NY
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Tags
17th century CE
Calculator
Mathematics
Napier, John (1550-1617), Mathematician
Napier's bones