Search results
Results from the WOW.Com Content Network
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.
A pneumograph, also known as a pneumatograph or spirograph, is a device for recording velocity and force of chest movements during respiration.While spirometry measures respiratory rate and other markers of respiratory health via analysis of the airflow from the lungs during inhalation and exhalation, pneumography measures the respiratory rate via chest motion.
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 ...
It has no gears but uses a rotating disc for the paper and a reciprocating arm with adjustable pivots to hold a dip pen. When cranked it produces designs just like a Spirograph. --Saxophobia 13:39, 30 June 2006 (UTC) Thanks for that information. I looked it up and included sourced information in the article. Interesting.
A one sheet is a specific size (typically 27 by 41 inches (69 cm × 104 cm) before 1985; 27 by 40 inches (69 cm × 102 cm) after 1985) of film poster advertising. Multiple one-sheets are used to assemble larger advertisements, which are referred to by their sheet count, including 24-sheet [ 9 ] billboards , and 30-sheet billboards.
Kahootz' initial product offerings were Spirograph and Pomz. [2] In a 2013 interview, [3] Cass stated that they brought back the Spirograph because they saw an opportunity for success in the nostalgia market and felt that it would do well. The first shipment of Spirograph arrived just before Christmas in 2012.
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 .
One pendulum moves the pen back and forth along one axis, and the other pendulum moves the drawing surface back and forth along a perpendicular axis. By varying the frequency and phase of the pendulums relative to one another, different patterns are created.