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The simplified spellings LCh, LCh(ab), LCH, LCH(ab) and HLC are common, but the letter presents a different order. HCL color space (Hue-Chroma-Luminance) on the other hand is a commonly used alternative name for the L*C*h(uv) color space, also known as the cylindrical representation or polar CIELUV .
Ultra Hairpin Curve (Ultra Ucchan Hairpin) Windmill Propellers (Ucchan Kazaguruma) Narrow road (Ucchan Oku no Hosomichi) (Up) / Nakasendō Curve (Ucchan Nakasendō) (Down) Nanchan Zone (Stage 2) Elevator Vertical Zigzag (Nanchan Elevator) Machine Press (Nanchan Press) Double Devil Curve Twist (Nanchan Curve Ni-kai Hineri)
The drawings created typically are Lissajous curves or related drawings of greater complexity. The devices, which began to appear in the mid-19th century and peaked in popularity in the 1890s, cannot be conclusively attributed to a single person, although Hugh Blackburn , a professor of mathematics at the University of Glasgow , is commonly ...
An ellipsograph is a trammel of Archimedes intended to draw, cut, or machine ellipses, e.g. in wood or other sheet materials. An ellipsograph has the appropriate instrument (pencil, knife, router, etc.) attached to the rod. Usually the distances a and b are adjustable, so that the size and shape of the ellipse can be varied.
Lissajous curves can also be generated using an oscilloscope (as illustrated). An octopus circuit can be used to demonstrate the waveform images on an oscilloscope. Two phase-shifted sinusoid inputs are applied to the oscilloscope in X-Y mode and the phase relationship between the signals is presented as a Lissajous figure.
The company was founded in 1883 [1] in Chicago as a lumber company by Albert Blake Dick (1856 – 1934). It soon expanded into office supplies and, after licensing key autographic printing patents from Thomas Edison, became the world's largest manufacturer of mimeograph equipment (Albert Dick coined the word "mimeograph"). [3]
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