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Product images of 'Superdigit' mathematical calculator
Product details 'Superdigit' mathematical calculator
'Superdigit' mathematical calculator
Abacus-like mathematical instrument consisting of 384 moving squares intended for calculation. The author indicated that "The Quickest Operation upon this Instrument, is by a New Method of Infinite Series, called the Decimal Series...." The first of six figures from the paper "The arithmetic of the superdigit", by Robert Flower, signed and dated on 18 April 1742 [but endordsed 1741] and sent to the Royal Society. Not published in Philosophical Transactions of the Royal Society. In addition to this paper, Flower also demonstrated his invention at the Spalding Gentlemen's Society in 1739. Robert Flower was not a Fellow of the Royal Society.
Original: ink and watercolour on paper. 1741
- Image ref: RS-10394
- The Royal Society