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  2. Decimal time - Wikipedia

    en.wikipedia.org/wiki/Decimal_time

    The time of day is sometimes represented as a decimal fraction of a day in science and computers. Standard 24-hour time is converted into a fractional day by dividing the number of hours elapsed since midnight by 24 to make a decimal fraction. Thus, midnight is 0.0 day, noon is 0.5 d, etc., which can be added to any type of date, including (all ...

  3. 0.999... - Wikipedia

    en.wikipedia.org/wiki/0.999...

    Stylistic impression of the repeating decimal 0.9999..., representing the digit 9 repeating infinitely In mathematics , 0.999... (also written as 0. 9 , 0. . 9 , or 0.(9) ) is a repeating decimal that is an alternate way of writing the number 1 .

  4. Orders of magnitude (numbers) - Wikipedia

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

    1/52! chance of a specific shuffle Mathematics: The chances of shuffling a standard 52-card deck in any specific order is around 1.24 × 10 −68 (or exactly 1 ⁄ 52!) [4] Computing: The number 1.4 × 10 −45 is approximately equal to the smallest positive non-zero value that can be represented by a single-precision IEEE floating-point value.

  5. Automobile drag coefficient - Wikipedia

    en.wikipedia.org/wiki/Automobile_drag_coefficient

    Edmund Rumpler's 1921 Tropfenwagen was the first series-produced aerodynamically designed automobile, before the Chrysler Airflow and the Tatra 77.. The drag coefficient is a common measure in automotive design as it pertains to aerodynamics.

  6. Albedo 0.39 - Wikipedia

    en.wikipedia.org/wiki/Albedo_0.39

    Albedo 0.39 is a studio album by the Greek electronic composer Vangelis, released in 1976.It was the second album produced by Vangelis in Nemo Studios, London, which was his creative base until the late 1980s.

  7. Caliber - Wikipedia

    en.wikipedia.org/wiki/Caliber

    While modern firearms are generally referred to by the name of the cartridge the gun is chambered for, they are still categorized together based on bore diameter. [citation needed] For example, a firearm might be described as a "30 caliber rifle", which could accommodate any of a wide range of cartridges using a roughly 0.30 inches (7.6 mm) projectile; or as a "22 rimfire", referring to any ...

  8. Magnetite - Wikipedia

    en.wikipedia.org/wiki/Magnetite

    Magnetite is one of the very few minerals that is ferrimagnetic; it is attracted by a magnet as shown here Unit cell of magnetite. The gray spheres are oxygen, green are divalent iron, blue are trivalent iron.

  9. Alpha helix - Wikipedia

    en.wikipedia.org/wiki/Alpha_helix

    The alpha helix is also commonly called a: Pauling–Corey–Branson α-helix (from the names of three scientists who described its structure); 3.6 13-helix because there are 3.6 amino acids in one ring, with 13 atoms being involved in the ring formed by the hydrogen bond (starting with amidic hydrogen and ending with carbonyl oxygen)