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  2. Imperial and US customary measurement systems - Wikipedia

    en.wikipedia.org/wiki/Imperial_and_US_customary...

    The definition of units of weight above a pound differed between the customary and the imperial system - the imperial system employed the stone of 14 pounds, the hundredweight of 8 stone [Note 6] and the ton of 2240 pounds (20 hundredweight), while the customary system of units did not employ the stone but has a hundredweight of 100 pounds and ...

  3. Norwegian units of measurement - Wikipedia

    en.wikipedia.org/wiki/Norwegian_units_of_measurement

    As in the case of the Danes, the Norwegians' earliest standards of measure can be derived from their ship burials.The 60-Norwegian-feet-long Kvalsund ship (18.8 m; 61.8 ft) was built ca. 700 AD and differs from the Danish boats less than it does from the Oseberg, Gokstad and Tune ships which all date from ca. 800 AD.

  4. Golden ratio - Wikipedia

    en.wikipedia.org/wiki/Golden_ratio

    Its two equal sides are in the golden ratio to its base. [47] The triangle formed by two sides and a diagonal of a regular pentagon is called a golden gnomon . It is an obtuse isosceles triangle with apex angle ⁠ 108 ∘ {\displaystyle 108^{\circ }} ⁠ and base angle ⁠ 36 ∘ {\displaystyle 36^{\circ }\!} ⁠ .

  5. Woolly mammoth - Wikipedia

    en.wikipedia.org/wiki/Woolly_mammoth

    The longest known male tusk is 4.05 m (13.3 ft) long (measured along the outside curve) and weighs 115.5 kg (255 lb), with a historical report of a 4.30 m (14.1 ft) long tusk found in Siberia, while the heaviest tusk is 121 kg (267 lb), suggested to have been 125–130 kg (276–287 lb) when complete; [53] [54] 2.4–2.7 m (7 ft 10 in – 8 ft ...

  6. Melamine - Wikipedia

    en.wikipedia.org/wiki/Melamine

    The European Union set a standard for acceptable human consumption (tolerable daily intake or TDI) of melamine at 0.2 mg per kilogram of body mass [23] (previously 0.5 mg/kg), Canada declared a limit of 0.35 mg/kg, and the US FDA's limit was put at 0.063 mg/kg (previously 0.63 mg/kg).

  7. List of best-selling music artists - Wikipedia

    en.wikipedia.org/wiki/List_of_best-selling_music...

    The following list of best-selling music artists includes musical artists from the 20th century to the present with claims of 75 million or more record sales worldwide. The sales figures are calculated based on the formula detailed below.

  8. Big Bear Lake - Wikipedia

    en.wikipedia.org/wiki/Big_Bear_Lake

    Big Bear Lake is a reservoir in the western United States, located in the San Bernardino Mountains in San Bernardino County, California.It is a snow and rain-fed lake, having no other means of tributaries or mechanical replenishment.

  9. Lignite - Wikipedia

    en.wikipedia.org/wiki/Lignite

    The energy content of lignite consumed in Victoria, Australia, averages 8.6 MJ/kg (8.2 million BTU/ton) on a net wet basis. [7] Lignite has a high content of volatile matter which makes it easier to convert into gas and liquid petroleum products than higher-ranking coals.