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In mainland China, since 1984, the chi has been defined as exactly 1/3 of a metre, i.e., 33 + 1 ⁄ 3 cm (13.1 in). However, in Hong Kong the corresponding unit, pronounced tsek (cek3) in Cantonese, is defined as exactly 0.371475 m (1 ft 2.6250 in) or 1 7/32 ft. [2] The two units are sometimes referred to in English as "Chinese foot" and "Hong Kong foot".
The unit is used to measure the length of the Harvard Bridge. Canonically, and originally, in 1958 when Smoot was a Lambda Chi Alpha pledge at MIT (class of 1962), the bridge was measured to be 364.4 Smoots, plus or minus one ear, using Mr. Smoot himself as a ruler. [17] At the time, Smoot was 5 feet, 7 inches, or 170 cm, tall. [18]
In astrophysics and quantum physics a jiffy is, as defined by Edward R. Harrison, [13] the time it takes for light to travel one fermi, which is approximately the size of a nucleon. One fermi is 10 −15 m, so a jiffy is about 3 × 10 −24 s. It has also more informally been defined as "one light-foot", which is equal to approximately one ...
The base unit in the International System of Units (SI) is the meter, defined as "the length of the path travelled by light in vacuum during a time interval of 1 ⁄ 299792458 seconds." [ 9 ] It is approximately equal to 1.0936 yd .
11 cm = 1.1 dm – length of an average potato in the US; 13 cm = 1.3 dm – body length of a Goliath birdeater; 15 cm = 1.5 dm – approximate size of largest beetle species; 19 cm = 1.9 dm – length of a banana; 26.3 cm = 2.6 dm – length of average male human foot; 29.98 cm = 2.998 dm – distance light in vacuum travels in one nanosecond
The Egyptian equivalent of the foot—a measure of four palms or 16 digits—was known as the djeser and has been reconstructed as about 30 cm (11.8 in). The Greek foot (πούς, pous) had a length of 1 / 600 of a stadion, [12] one stadion being about 181.2 m (594 ft); [13] therefore a foot was, at the time, about 302 mm (11.9 in). Its ...
output of convert template: 1.57 metres (5 feet 1.8 inches) |height={{Convert|157|cm|ftin|1|abbr=off}} → 157 cm (5 ft 1.8 in) output of convert template: 157 centimetres (5 feet 1.8 inches) |height={{Height|m=1.57|frac=4|abbr=no}} → 1.57 m (5 ft 1 + 3 ⁄ 4 in) output of height template: 1.57 metres (5 feet 1 + 3 ⁄ 4 inches)
1 ⁄ 4: 17.78 cm 7 in; cf. span: фут: fut foot: 3 ⁄ 7: 30.48 cm 1 ft локоть: lokot' elbow 9 ⁄ 14: 45.72 cm 1 + 1 ⁄ 2 ft; cf. cubit/ell: шаг: shag stride, step 1 71.12 cm cf. step: арши́н: arshin: yard 1 71.12 cm 2 + 1 ⁄ 3 ft саже́нь, са́жень: sazhen' fathom: 3 2.1336 m 7 ft верста́: vyersta turn ...
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