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A harmonograph creates its figures using the movements of damped pendulums. The movement of a damped pendulum is described by the equation = (+),in which represents frequency, represents phase, represents amplitude, represents damping and represents time.
In 1946, Laposky began working with photographic pendulum tracings and harmonograph machine patterns. [2] In 1947, he read an article in Popular Science which proposed the use of television testing equipment, such as oscilloscopes, to generate simple decorative patterns, based on in formula similar to that which governs pendulum curves. This ...
The oldest Foucault Pendulum in Romania is located in pavilion B of the University of Oradea. It was installed in 1964 by Prof. Coriolan Rus, the then dean of the Faculty of Mathematics - Physics. (length: 14m; weight: 60 kg) "Vasile Alecsandri" National College in Galați (length: 9,92m; weight: 8 kg)
Harmonic motion can mean: the displacement of the particle executing oscillatory motion that can be expressed in terms of sine or cosine functions known as harmonic motion .
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The contents of the Blackburn pendulum page were merged into Harmonograph on 2014-11-27. For the contribution history and old versions of the redirected page, please see its history ; for the discussion at that location, see its talk page .
A Lissajous figure, made by releasing sand from a container at the end of a Blackburn pendulum. A Lissajous curve / ˈ l ɪ s ə ʒ uː /, also known as Lissajous figure or Bowditch curve / ˈ b aʊ d ɪ tʃ /, is the graph of a system of parametric equations = (+), = (),
A 1913 illustration of Benham's harmonograph. Charles Edwin Benham JP (/ ˈ b ɛ n ə m /; 15 April 1860 in Colchester, Essex, England – 1 April 1929, also in Colchester) was a journalist who edited for many years the Essex County Standard, a published author of works such as Essex Ballads, and an amateur scientist-cum-inventor, which led him to create Benham's top, which was named after him.