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Unicode chart Halfwidth and Fullwidth Forms}} provides a table listing the characters in the Halfwidth and Fullwidth Forms Unicode block. Hangul and katakana subsets can be listed using an optional parameter.
Some clinics do not have 6-metre eye lanes available, and either a half-size chart subtending the same angles at 3 metres (9.8 ft), or a reversed chart projected and viewed by a mirror is used to achieve the correct sized letters. In the most familiar acuity test, a Snellen chart is placed at a standard distance: 6 metres.
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A 1951 USAF resolution test chart is a microscopic optical resolution test device originally defined by the U.S. Air Force MIL-STD-150A standard of 1951. The design provides numerous small target shapes exhibiting a stepped assortment of precise spatial frequency specimens.
Unlike monospaced fonts, a halfwidth character occupies half the width of a fullwidth character, hence the name. Halfwidth and Fullwidth Forms is also the name of a Unicode block U+FF00–FFEF, provided so that older encodings containing both halfwidth and fullwidth characters can have lossless translation to and from Unicode.
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Half width may refer to Full width at half maximum; Halfwidth and fullwidth forms; Half-width kana This page was last edited on 20 March 2023, at 23:04 (UTC). ...
In a distribution, full width at half maximum (FWHM) is the difference between the two values of the independent variable at which the dependent variable is equal to half of its maximum value. In other words, it is the width of a spectrum curve measured between those points on the y -axis which are half the maximum amplitude.