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.
The name has been a registered trademark of Hasbro Inc. since 1998 following purchase of the company that had acquired the Denys Fisher company. The Spirograph brand was relaunched worldwide in 2013, with its original product configurations, by Kahootz Toys.
Spirograph is a geometric drawing device that produces mathematical roulette curves of the variety technically known as hypotrochoids and epitrochoids...
May 1918 – 17 September 2002) was an English engineer who invented the spirograph toy and created the company Denys Fisher Toys. Fisher's early years were...
IC 418, also known as the Spirograph Nebula, is a planetary nebula located in the constellation of Lepus about 3,600 ly away from Earth. It spans 0.3 light-years...
A pneumograph, also known as a pneumatograph or spirograph, is a device for recording velocity and force of chest movements during respiration. There are...
include the limaçon with R = r and the epicycloid with d = r. The classic Spirograph toy traces out epitrochoid and hypotrochoid curves. The paths of planets...
epicycloid or hypocycloid variety. The classic Spirograph toy traces out these curves. Centered trochoid Cycloid Epicycloid Hypocycloid Spirograph [1]...
in Ann Arbor, Michigan, best known for the relaunch of the classic toy Spirograph. Kahootz was founded in 2012 and acquired by PlayMonster in 2019. Kahootz...
Curves similar to hypocycloids can be drawn with the Spirograph toy. Specifically, the Spirograph can draw hypotrochoids and epitrochoids. The Pittsburgh...
becoming 1 when d = r {\displaystyle d=r} (see Tusi couple). The classic Spirograph toy traces out hypotrochoid and epitrochoid curves. Hypotrochoids describe...
Rangers Play-Doh Rom the Space Knight Rubik's Cube Robotix Sit 'n Spin Spirograph Starting Lineup Stickle Bricks Stretch Armstrong Super Soaker Talk 'n...
geometric patterns. The patterns it produces are similar to that of a Spirograph, in metal. No other ornamental lathe can produce these "rose" patterns...
the Easy-Bake Oven in 1963, the Electric Mold Master also in 1963, the Spirograph drawing toy in 1966, and the Starting Lineup sports action figure collectible...
Rangers Play-Doh Rom the Space Knight Rubik's Cube Robotix Sit 'n Spin Spirograph Starting Lineup Stickle Bricks Stretch Armstrong Super Soaker Talk 'n...
tuning systems. Lissajous orbit Blackburn pendulum Lemniscate of Gerono Spirograph Wikimedia Commons has media related to Lissajous curves. Palmer, Kenneth;...
gearing Epitrochoid Hypocycloid Hypotrochoid Multibrot set Roulette (curve) Spirograph J. Dennis Lawrence (1972). A catalog of special plane curves. Dover Publications...
tracks. The cover art is by Mark Dagley. The front cover resembles a Spirograph design, while the rear cover is an homage to the back cover of Never Mind...
ballpoint pen drawing titled "Waiting" credited to Biro. The popular Spirograph, mass-marketed in America during the advent of 1960s psychedelic culture...
Rangers Play-Doh Rom the Space Knight Rubik's Cube Robotix Sit 'n Spin Spirograph Starting Lineup Stickle Bricks Stretch Armstrong Super Soaker Talk 'n...
The Game of Life, Hot Wheels, My Little Pony dolls, the pogo stick, Spirograph, and Yahtzee. The following toys were added in 2008: The stick: Curators...
Rangers Play-Doh Rom the Space Knight Rubik's Cube Robotix Sit 'n Spin Spirograph Starting Lineup Stickle Bricks Stretch Armstrong Super Soaker Talk 'n...
Crowns | Koosh ball | Loopdedoo| Loopdeloom | Quiddler | Set (card game) |Spirograph Animator | The Magical World of Disney Trivia | The Original Magnatab...
owned by Playmates Toys) Rom the Space Knight Sesame Street (2010–2022) Spirograph Star Trek (2013–2014) Star Wars Stretch Armstrong Talk 'n Play Tinkertoy...
three cusps Stoner–Wohlfarth astroid – a use of this curve in magnetics Spirograph Yates J. J. v. Littrow (1838). "§99. Die Astrois". Kurze Anleitung zur...
Rangers Play-Doh Rom the Space Knight Rubik's Cube Robotix Sit 'n Spin Spirograph Starting Lineup Stickle Bricks Stretch Armstrong Super Soaker Talk 'n...
Rangers Play-Doh Rom the Space Knight Rubik's Cube Robotix Sit 'n Spin Spirograph Starting Lineup Stickle Bricks Stretch Armstrong Super Soaker Talk 'n...
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