John Napier of Merchiston, Scotland

Prev
Next
Image Zoom
  • Details
  • Description
Date
1616 ca.
Credit Line
Courtesy of the National Gallery of Scotland. Used with permission.
Copyright Owner
© Scottish National Portrait Gallery
Keywords
Business; India; Hand calculation; Napier's Bones
Object ID
500004053

Napier’s “bones” are a mechanical aid to multiplication and division. They embody an earlier calculation method from Islamic, South Asian, and Chinese mathematicians.