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  2. Orders of magnitude (length) - Wikipedia

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

    To help compare orders of magnitude, this section lists lengths between 100 and 1,000 kilometers (10 5 and 10 6 meters). Conversions A distance of 100 kilometers is equal to about 62 miles (or 62.13711922 miles).

  3. Kármán line - Wikipedia

    en.wikipedia.org/wiki/Kármán_line

    Earth's atmosphere photographed from the International Space Station.The orange and green line of airglow is at roughly the altitude of the Kármán line. [1]The Kármán line (or von Kármán line / v ɒ n ˈ k ɑːr m ɑː n /) [2] is a conventional definition of the edge of space; it is widely but not universally accepted.

  4. Atmosphere of Earth - Wikipedia

    en.wikipedia.org/wiki/Atmosphere_of_Earth

    The troposphere is the lowest layer of Earth's atmosphere. It extends from Earth's surface to an average height of about 12 km (7.5 mi; 39,000 ft), although this altitude varies from about 9 km (5.6 mi; 30,000 ft) at the geographic poles to 17 km (11 mi; 56,000 ft) at the Equator, [17] with some variation due

  5. Ancient Roman units of measurement - Wikipedia

    en.wikipedia.org/wiki/Ancient_Roman_units_of...

    8.76 m 2 94.3 sq ft the square of the standard 10-foot measuring rod actus simplex 480 pedes qu. 42.1 m 2 453 sq ft 4 × 120 pedes [12] uncia 2,400 pedes qu. 210 m 2 2,260 sq ft clima 3,600 pedes qu. 315 m 2 3,390 sq ft 60 × 60 pedes [12] actus quadratus or acnua 14,400 pedes qu. 1,262 m 2 13,600 sq ft

  6. Kilometre - Wikipedia

    en.wikipedia.org/wiki/Kilometre

    The kilometre (SI symbol: km; / ˈ k ɪ l ə m iː t ər / or / k ɪ ˈ l ɒ m ə t ər /), spelt kilometer in American and Philippine English, is a unit of length in the International System of Units (SI), equal to one thousand metres (kilo-being the SI prefix for 1000).

  7. Japanese units of measurement - Wikipedia

    en.wikipedia.org/wiki/Japanese_units_of_measurement

    The ken is the normal unit of distance and length; the hiro used as the equivalent unit of depth. Sometimes hiro is used equal to 5 shaku [ 19 ] ( ⁠ 50 / 33 ⁠ m, ~1.5152 metres). The traditional units are still used for construction materials in Japan.

  8. How tall is Meghan Markle? The duchess' height is sort of ...

    www.aol.com/lifestyle/tall-meghan-markle-duchess...

    Meanwhile, Prince William stands at a tall 6’3’’, while his wife Kate Middleton, at 5'9", does not shy away from heels either. Both couples have a 5-6 inch height difference between them.

  9. List of highest mountains on Earth - Wikipedia

    en.wikipedia.org/wiki/List_of_highest_mountains...

    Mauna Loa (4,169 m or 13,678 ft) is the largest mountain on Earth in terms of base area (about 5,200 km 2 or 2,000 sq mi) and volume (about 42,000 km 3 or 10,000 cu mi), although, due to the intergrade of lava from Kilauea, Hualalai and Mauna Kea, the volume can only be estimated based on surface area and height of the edifice.