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457.2 mm: From fingertips to elbow, 18 inches. Yard: 0.914 m: 3 feet = 36 inches, the practical base unit, defined as the length of the prototype bar held by the Crown or Exchequer. Ell: 1.143 m: From fingertip of outstretched arm to opposite shoulder, 20 nails = 1 + 1 ⁄ 4 yard or 45 inches. Mostly for measuring cloth. Fathom: 1.829 m
A U.K. deal equaled 7 ft × 6 ft × 2 + 1 ⁄ 2 in, while a U.S. deal equaled 12 ft × 11 in × 1 + 1 ⁄ 2 in. [7] Demiard – an old French unit of volume. When France metricated, it survived in Louisiana and Quebec. The demiard eventually became associated with the American and British half-pint rather than French units. [7] Firlot; Hekat ...
When a barn (a very small unit of area used for measuring the cross sectional area of atomic nuclei) is multiplied by a megaparsec (a very large unit of length used for measuring the distances between galaxies), the result is a human-scaled unit of volume approximately equal to 2 ⁄ 3 of a teaspoon (about 3 mL). [30] [31]
2.817 940 285 (31) × 10 −15 [18] The Compton wavelength of the electron λ C: 2.426 310 215 (18) × 10 −12 [18] The reduced Compton wavelength of the electron λ C: 3.861 592 6764 (18) × 10 −13 [19] The Compton wavelength (or reduced Compton wavelength) of any fundamental particle λ x: The Bohr radius of the hydrogen atom (Atomic unit ...
Legua nautica (nautical league): Between 1400 and 1600 the Spanish nautical league was equal to four Roman miles of 4,842 feet, making it 19,368 feet (5,903 metres or 3.1876 modern nautical miles). However, the accepted number of Spanish nautical leagues to a degree varied between 14 1/6 to 16 2/3, so in actual practice the length of a Spanish ...
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The entire region was bracing for a deluge from Helene: "Overall, 5 to 10 inches of rain with isolated totals around 15 inches is forecast over the Southeast," the prediction center said.
1.75 m – (5 feet 8 inches) – height of average U.S. male human as of 2002 (source: U.S. CDC as per female above) 2.4 m – wingspan of a mute swan; 2.5 m – height of a sunflower; 2.7 m – length of a leatherback sea turtle, the largest living turtle; 2.72 m – (8 feet 11 inches) – tallest-known human (Robert Wadlow) [31]