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  2. 80-meter band - Wikipedia

    en.wikipedia.org/wiki/80-meter_band

    The nominal "80 meter" band begins at 3.5 MHz (85.7 m wavelength) and goes up to 4.0 MHz (74.9 m wavelength).The upper part of the band, mostly used for voice, is often referred to as 75 meters, since in Region 2, the wavelengths in that section are between 80–75 meters (adjacent to or overlapping a shortwave broadcast band called by the same name: "75 m").

  3. Orders of magnitude (length) - Wikipedia

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

    Leonardo da Vinci drew the Vitruvian Man within a square of side 1.83 m (6 ft 0 in) and a circle about 1.2 m (3 ft 11 in) in radius. To help compare different orders of magnitude, this section lists lengths between one meter and ten meters. Light, in vacuum, travels 1 meter in 1 ⁄ 299,792,458, or 3.3356409519815E-9 of a second.

  4. Taiwanese units of measurement - Wikipedia

    en.wikipedia.org/wiki/Taiwanese_units_of_measurement

    feet Metric US & Imperial Notes Taiwanese Hokkien Hakka Mandarin Character Exact Approx. Exact Approx. Hun: Fûn: Fēn: 分: 1 ⁄ 100 ⁠ 1 / 330 ⁠ m: 3.030 mm ⁠ 125 / 37,719 ⁠ yd: 0.1193 in Same as Japanese Bu: Chhùn: Chhun: Cùn: 寸: 1 ⁄ 10 ⁠ 1 / 33 ⁠ m: 3.030 cm ⁠ 1250 / 37,719 ⁠ yd: 1.193 in Taiwanese inch; Same as ...

  5. Track spacing - Wikipedia

    en.wikipedia.org/wiki/Track_spacing

    The general standard in Germany and Switzerland had been to build new tracks with a centre-to-centre spacing of 3.8 m (12 ft) and a spacing of 4.5 m (15 ft) in railway stations. Depending on the usage of the tracks it was still possible to build new double track lines with track centres of just 3.5 m (11 ft).

  6. Inch - Wikipedia

    en.wikipedia.org/wiki/Inch

    A fire hydrant marked as 3-inch. The inch (symbol: in or ″) is a unit of length in the British Imperial and the United States customary systems of measurement.It is equal to ⁠ 1 / 36 ⁠ yard or ⁠ 1 / 12 ⁠ of a foot.

  7. Metre sea water - Wikipedia

    en.wikipedia.org/wiki/Metre_sea_water

    The metre (or meter) sea water (msw) is a metric unit of pressure used in underwater diving.It is defined as one tenth of a bar. [1] [2]The unit used in the US is the foot sea water (fsw), based on standard gravity and a sea-water density of 64 lb/ft 3.

  8. Flow measurement - Wikipedia

    en.wikipedia.org/wiki/Flow_measurement

    References will be made to "actual" flow rate through a meter and "standard" or "base" flow rate through a meter with units such as acm/h (actual cubic meters per hour), sm 3 /sec (standard cubic meters per second), kscm/h (thousand standard cubic meters per hour), LFM (linear feet per minute), or MMSCFD (million standard cubic feet per day).

  9. MTR - Wikipedia

    en.wikipedia.org/wiki/MTR

    The Mass Transit Railway (MTR) is a major public transport network serving Hong Kong.Operated by the MTR Corporation (MTRCL), it consists of heavy rail, light rail, and feeder bus services, centred around a 10-line rapid transit network, serving the urbanised areas of Hong Kong Island, Kowloon, and the New Territories.