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Spirograph is a geometric drawing device that produces mathematical roulette curves of the variety technically known as hypotrochoids and epitrochoids. The well-known toy version was developed by British engineer Denys Fisher and first sold in 1965.
Between 1962 and 1964 he developed various drawing machines from Meccano pieces, eventually producing a prototype Spirograph. Patented in 16 countries, it went on sale in Schofields department store in Leeds in 1965. A year later, Fisher licensed Spirograph to Kenner Products in the United States. In 1967 Spirograph was chosen as the UK Toy of ...
As a young man in 1827 he had developed a so-called "Speiragraph", an early prototype for the spirograph. He evidently continued on with experiments and inventions, and on 27 February 1860 received British patent no. 537 for 28 monocular and stereoscopic variations of cylindrical stroboscopic devices (see zoetrope ). [ 7 ]
The first shipment of Spirograph arrived just before Christmas in 2012. The Spirograph (along with Kahootz' Lite-Brite) was exhibited at the 2013 Sweet Suite 13 [4] show in Chicago, Illinois and the 2014 American International Toy Fair in New York City, New York. [5] Since then, Kahootz Toys has expanded and released numerous new products and ...
Below is a list of literary magazines and journals: periodicals devoted to book reviews, creative nonfiction, essays, poems, short fiction, and similar literary endeavors. [ 1 ] [ 2 ] Because the majority are from the United States , the country of origin is only listed for those outside the U.S.
Among his other patents were the parabolagraph, the spirograph, the electric bell used in trains, and an electric arc lamp of his own design. [5] Abakanowicz published several works, including works on statistics , integrators and numerous popular scientific works, such as one describing his integraph .
I think there is an audience of intellectual readers between 25 and 40 out there – the kind of person who buys The New Republic, The Nation, and The New York Review of Books, but doesn't have an allegiance to a particular publication." [7]
The New York Times Book Review (NYTBR) is a weekly paper-magazine supplement to the Sunday edition of The New York Times in which current non-fiction and fiction books are reviewed. It is one of the most influential and widely read book review publications in the industry. [ 2 ]