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  2. Light-second - Wikipedia

    en.wikipedia.org/wiki/Light-second

    light-second 1 light-second 299 792 458 m: 2.998 × 10 5 km: 1.863 × 10 5 miles: Average distance from the Earth to the Moon is about 1.282 light-seconds light-minute 60 light-seconds = 1 light-minute 17 987 547 480 m: 1.799 × 10 7 km: 1.118 × 10 7 miles: Average distance from the Earth to the Sun is 8.317 light-minutes light-hour 60 light ...

  3. Jiffy (time) - Wikipedia

    en.wikipedia.org/wiki/Jiffy_(time)

    In astrophysics and quantum physics a jiffy is, as defined by Edward R. Harrison, [13] the time it takes for light to travel one fermi, which is approximately the size of a nucleon. One fermi is 10 −15 m, so a jiffy is about 3 × 10 −24 s. It has also more informally been defined as "one light-foot", which is equal to approximately one ...

  4. Orders of magnitude (time) - Wikipedia

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

    One billionth of one second 1 ns: The time needed to execute one machine cycle by a 1 GHz microprocessor 1 ns: The time light takes to travel 30 cm (11.811 in) 10 −6: microsecond: μs One millionth of one second 1 μs: The time needed to execute one machine cycle by an Intel 80186 microprocessor 2.2 μs: The lifetime of a muon

  5. Wind speed - Wikipedia

    en.wikipedia.org/wiki/Wind_speed

    An anemometer is commonly used to measure wind speed. Global distribution of wind speed at 10m above ground averaged over the years 1981–2010 from the CHELSA-BIOCLIM+ data set [1] In meteorology, wind speed, or wind flow speed, is a fundamental atmospheric quantity caused by air moving from high to low pressure, usually due to changes in ...

  6. Edmonton - Wikipedia

    en.wikipedia.org/wiki/Edmonton

    Its five-year population change of 12.1 percent was second only to the Calgary CMA between 2006 and 2011. With a land area of 9,426.73 km 2 (3,639.68 sq mi), the Edmonton CMA had a population density of 123.0/km 2 (318.7/sq mi) in 2011. [115] Statistics Canada's latest estimate of the Edmonton CMA population, as of July 1, 2016, is 1,363,300 [175]

  7. Unit of time - Wikipedia

    en.wikipedia.org/wiki/Unit_of_time

    One hundredth of a second. decisecond: 10 −1 s: One tenth of a second. second: 1 s: SI base unit for time. decasecond: 10 s: Ten seconds (one sixth of a minute) minute: 60 s: hectosecond: 100 s: milliday: 1/1000 d (0.001 d) 1.44 minutes, or 86.4 seconds. Also marketed as a ".beat" by the Swatch corporation. moment: 1/40 solar hour (90 s on ...

  8. Speed of light - Wikipedia

    en.wikipedia.org/wiki/Speed_of_Light

    The speed of light in vacuum, commonly denoted c, is a universal physical constant that is exactly equal to 299,792,458 metres per second (approximately 300,000 kilometres per second; 186,000 miles per second; 671 million miles per hour).

  9. Edmonton LRT - Wikipedia

    en.wikipedia.org/wiki/Edmonton_LRT

    Edmonton Light Rail Transit, commonly referred to as the LRT, is a light rail system in Edmonton, Alberta. Part of the Edmonton Transit Service (ETS), the system has 29 stations on three lines and 37.4 km (23.2 mi) of track. Much of the system has a dedicated right-of-way, while in the downtown area, vehicles run underground.