One of the mysteries of the English language finally explained.
Slips of ivory or other material divided into sections marked with digits, devised by John Napier and formerly used to facilitate multiplication and division.
- ‘Napier is also credited with creating one of the earliest calculating machines (‘Napier's bones ’) and with the first systematic use of the decimal point.’
- ‘This is another site that demonstrates how to multiply using Napier's bones.’
- ‘Then stick the page onto a card and cut the bones out and pronto - you will have your own Napier's bones!’
- ‘He described a method of multiplication using rods with numbers marked off on them, called Napier's bones.’
- ‘These rods however are quite a lot longer than Napier's bones usually were, so are too big to put in a pocket.’
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