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  2. Orders of magnitude (length) - Wikipedia

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

    The centimetre (SI symbol: cm) is a unit of length in the metric system equal to 10 −2 metres (⁠ 1 / 100 ⁠ m = 0.01 m). To help compare different orders of magnitude, this section lists lengths between 10 −2 m and 10 −1 m (1 cm and 1 dm). 1 cm – 10 millimeters; 1 cm – 0.39 inches; 1 cm – edge of a square of area 1 cm 2

  3. List of unusual units of measurement - Wikipedia

    en.wikipedia.org/wiki/List_of_unusual_units_of...

    A 50 m × 25 m (164 ft × 82 ft) Olympic swimming pool, built to the FR3 minimum depth of 2 metres (6.6 ft) would hold 2,500 m 3 (660,000 US gal). The US National Institute of Standards and Technology (NIST) defines the Olympic swimming pool as 1 million litres, which is the approximate volume of the smaller FR2 pool.

  4. Orders of magnitude (area) - Wikipedia

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

    1–4 m 2: Area of the top of an office desk 10 1 10–20 m 2: A parking space 70 m 2: Approximate surface area of a human lung [28] 10 2: 1 square decametre (dam 2) 100 m 2: One are (a) 162 m 2: Size of a volleyball court (18 × 9 metres) [29] 202 m 2: Floor area of a median suburban three-bedroom house in the US in 2010: 2,169 sq ft (201.5 m ...

  5. List of tallest people - Wikipedia

    en.wikipedia.org/wiki/List_of_tallest_people

    Coyne's World War I draft registration card, dated 29 August, gave his height as 8 ft (240 cm), although he had reached a height of 8 ft 1.7 in (2.48 m), possibly 8 feet 4 inches (254 cm) by the time of his death. 1897–1921 (23) Brahim Takioullah: Morocco: 246 cm: 8 ft 1 in: Possesses the world's largest feet at 38 cm (1 ft 3 in). [25] [26]

  6. James Webb Space Telescope - Wikipedia

    en.wikipedia.org/wiki/James_Webb_Space_Telescope

    Webb has a 6.5-meter-diameter (21-foot) gold-coated beryllium primary mirror made up of 18 separate hexagonal mirrors. The mirror has a polished area of 26.3 m 2 (283 sq ft), of which 0.9 m 2 (9.7 sq ft) is obscured by the secondary support struts, [16] giving a total collecting area of 25.4 m 2 (273 sq ft).

  7. Average human height by country - Wikipedia

    en.wikipedia.org/wiki/Average_human_height_by...

    Conscripts, 19 (N= m:12,447, Median= m:178.0 cm (5 ft 10 in), SD= m:6.52 cm (2.6 in)) 1.5%: Measured: 2009 [190] Switzerland: 175.4 cm (5 ft 9 in) 164 cm (5 ft 4 + 1 ⁄ 2 in) 1.07: 20–74: 88.8%: Self-reported: 1987–1994 [188] Taiwan: 171.4 cm (5 ft 7 + 1 ⁄ 2 in) 159.9 cm (5 ft 3 in) 1.07: 17 (N= m:200 f:200) 0.0%: Measured: 2011 [191 ...

  8. Robert Wadlow - Wikipedia

    en.wikipedia.org/wiki/Robert_Wadlow

    Wadlow's height was 8 ft 11.1 in (2.72 m) [2] [3] [4] while his weight reached 439 lb (199 kg) at his death at age 22. His great size and his continued growth in adulthood were due to hypertrophy of his pituitary gland , which results in an abnormally high level of human growth hormone (HGH).

  9. 6.5 mm - Wikipedia

    en.wikipedia.org/wiki/6.5_mm

    6.5mm Grendel (6.5×39mm), cartridge designed for the AR-15; 6.5mm Creedmoor, centerfire rifle cartridge; 6.5mm Remington Magnum, belted bottlenecked cartridge; 6.5×42mm, also known as 6.5 MPC (Multi Purpose Cartridge), centerfire rifle cartridge