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  2. Orders of magnitude (length) - Wikipedia

    en.wikipedia.org/wiki/Orders_of_magnitude_(length)

    The picometre (SI symbol: pm) is a unit of length in the metric system equal to 1012 metres (⁠ 1 / 1 000 000 000 000 ⁠ m = 0. 000 000 000 001 m). To help compare different orders of magnitude this section lists lengths between 1012 and 10 −11 m (1 pm and 10 pm). 1 pm – distance between atomic nuclei in a white dwarf [citation ...

  3. Help:Convert units - Wikipedia

    en.wikipedia.org/wiki/Help:Convert_units

    10 12: 1 000 000 000 000: giga G 10 9: 1 000 000 000: mega M ... yard: mi: mi: mile: nmi: nmi: nautical mile: m: m: metre: meter cm: cm: ... A hand is a unit of ...

  4. Unit of length - Wikipedia

    en.wikipedia.org/wiki/Unit_of_length

    2.817 940 285 (31) × 10 −15 [13] The Compton wavelength of the electron λ C: 2.426 310 215 (18) × 1012 [13] The reduced Compton wavelength of the electron λ C: 3.861 592 6764 (18) × 10 −13 [14] The Compton wavelength (or reduced Compton wavelength) of any fundamental particle λ x: The Bohr radius of the hydrogen atom (Atomic unit ...

  5. Foot (unit) - Wikipedia

    en.wikipedia.org/wiki/Foot_(unit)

    The foot of an adult European-American male is typically about 15.3% of his height, [10] giving a person of 175 cm (5 ft 9 in) a foot-length of about 268 mm (10.6 in), on average. Archaeologists believe that, in the past, the people of Egypt, India, and Mesopotamia preferred the cubit, while the people of Rome, Greece, and China preferred the foot

  6. Inch - Wikipedia

    en.wikipedia.org/wiki/Inch

    It is equal to ⁠ 1 / 36 ⁠ yard or ⁠ 1 / 12 ... 2.54 centimeters ... This is approximately ⁠ 1 / 8 ⁠ inch per mile; 12.7 kilometres is exactly 500,000 ...

  7. Link (unit) - Wikipedia

    en.wikipedia.org/wiki/Link_(unit)

    In many measurement systems based on former English units, the link has remained fixed at 0.66 feet, therefore 0.22 yards or 7.92 inches; it is the absolute length of the yard that has varied. A rare remaining application of the link is in the service of some surveying in the United States, which relates to the definition of the survey foot.

  8. AOL Mail

    mail.aol.com

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  9. Rod (unit) - Wikipedia

    en.wikipedia.org/wiki/Rod_(unit)

    The rod, perch, or pole (sometimes also lug) is a surveyor's tool [1] and unit of length of various historical definitions. In British imperial and US customary units, it is defined as 16 + 1 ⁄ 2 feet, equal to exactly 1 ⁄ 320 of a mile, or 5 + 1 ⁄ 2 yards (a quarter of a surveyor's chain), and is exactly 5.0292 meters.