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  2. Orders of magnitude (length) - Wikipedia

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

    The micrometre (SI symbol: μm) is a unit of length in the metric system equal to 10 −6 metres (⁠ 1 / 1 000 000 ⁠ m = 0. 000 001 m). To help compare different orders of magnitude , this section lists some items with lengths between 10 −6 and 10 −5 m (between 1 and 10 micrometers , or μm).

  3. Mount Everest - Wikipedia

    en.wikipedia.org/wiki/Mount_Everest

    In 2010, both sides agreed that the height of Everest is 8,848 m, and Nepal recognises China's claim that the rock height of Everest is 8,844 m. [43] On 8 December 2020, it was jointly announced by the two countries that the new official height is 8,848.86 metres (29,031.7 ft).

  4. Elevator - Wikipedia

    en.wikipedia.org/wiki/Elevator

    Each elevator could carry about 600 pounds (270 kg) (roughly the weight of two lions) 23 feet (7.0 m) up when powered by up to eight men. [4] In 1000, the Book of Secrets by Ibn Khalaf al-Muradi in Islamic Spain described the use of an elevator-like lifting device to raise a large battering ram to destroy a fortress.

  5. Mariana Trench - Wikipedia

    en.wikipedia.org/wiki/Mariana_Trench

    The onboard systems indicated a depth of 37,800 feet (11,521 m; 6,300 fathoms), [24] but this was later revised to 35,814 feet (10,916 m; 5,969 fathoms). [25] The depth was estimated from a conversion of pressure measured and calculations based on the water density from sea surface to seabed.

  6. Éolienne Bollée - Wikipedia

    en.wikipedia.org/wiki/Éolienne_Bollée

    The wind wheel was only 5 feet (1.52 m) diameter and is designed to lift 100 imperial gallons (450 L; 120 US gal) of water per hour to a height of 50 feet (15.24 m) in a 12-mile-per-hour (19 km/h) wind, or double that quantity in a 15-mile-per-hour (24 km/h) wind.

  7. Bombardier Global 7500 - Wikipedia

    en.wikipedia.org/wiki/Bombardier_Global_7500

    Entry into service was initially scheduled for 2017. [7] By September 2016, it was delayed to early 2019. [ 8 ] Trading nearly 8 ft (2.4 m) of cabin space for 600 nmi (1,100 km) of range, the Global 8000 accounted for a very small part of the backlog in December 2017 and its schedule was expected to be determined after the Global 7500 entered ...

  8. Boeing 747 - Wikipedia

    en.wikipedia.org/wiki/Boeing_747

    The 747-8's fuselage is lengthened from 232 feet (71 m) to 251 feet (77 m), [204] marking the first stretch variant of the aircraft. The 747-8 Freighter, or 747-8F, has 16% more payload capacity than its predecessor, allowing it to carry seven more standard air cargo containers, with a maximum payload capacity of 154 short tons (140 t ) of ...

  9. Hagia Sophia - Wikipedia

    en.wikipedia.org/wiki/Hagia_Sophia

    The entire vault had to be taken down and rebuilt 20 Byzantine feet (6.25 m or 20.5 ft) higher than before, giving the building its current interior height of 55.6 m (182 ft). [60] Moreover, Isidorus changed the dome type, erecting a ribbed dome with pendentives whose diameter was between 32.7 and 33.5 m. [ 54 ]