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This is a list of hillside letters (also known as mountain monograms), large geoglyphs found primarily in the Western United States. [1] [2] [3] There are about 600 in total, but the status of many of these symbols are uncertain, due to vagueness in sources. The states with the most hillside letters are: Montana: 86 monograms; California: 83 ...
The content and layout of the pattern, as well as the generator, was designed and made by Danish engineer Finn Hendil (1939–2011) at the Philips TV & Test Equipment laboratory in Amager, south of Copenhagen in 1965–66. [4] It has been used in Australia, Spain, United Arab Emirates, [5] Denmark, [6] Israel, [7] Qatar, and the Netherlands.
A degree (in full, a degree of arc, arc degree, or arcdegree), usually denoted by ° (the degree symbol), is a measurement of a plane angle in which one full rotation is 360 degrees. [ 4 ] It is not an SI unit —the SI unit of angular measure is the radian —but it is mentioned in the SI brochure as an accepted unit . [ 5 ]
The Philips circle pattern was also in widespread use in Australia for many years, most notably with the Australian Broadcasting Corporation (ABC) [125] from its launch of colour broadcasts in 1974–75 and Special Broadcasting Service (SBS) [126] from its launch of television services in 1980. Some commercial stations also used it. [127] [128 ...
An arc of a circle with the same length as the radius of that circle corresponds to an angle of 1 radian. A full circle corresponds to a full turn, or approximately 6.28 radians, which is expressed here using the Greek letter tau (τ). Some special angles in radians, stated in terms of 𝜏. A comparison of angles expressed in degrees and radians.
More than 100 pages use this file. The following list shows the first 100 pages that use this file only. A full list is available.. Homology (mathematics) User:5minutes
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Animation of a half-turn ambigram of the word ambigram, with 180-degree rotational symmetry [1]. An ambigram is a calligraphic composition of glyphs (letters, numbers, symbols or other shapes) that can yield different meanings depending on the orientation of observation.