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  2. Angstrom - Wikipedia

    en.wikipedia.org/wiki/Angstrom

    It was only in 1960, when the metre was redefined in the same way, that the angstrom became again equal to 10 −10 metre. Yet the angstrom was never part of the SI system of units, [13] [14] and has been increasingly replaced by the nanometre (10 −9 m) or picometre (10 −12 m).

  3. Orders of magnitude (length) - Wikipedia

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

    The myriameter [147] (sometimes also spelled myriometer; 10,000 meters) is a deprecated unit name; the decimal metric prefix myria-[98] (sometimes also written as myrio-[148] [149] [150]) is obsolete [99] [100] [101] and was not included among the prefixes when the International System of Units was introduced in 1960.

  4. Anders Jonas Ångström - Wikipedia

    en.wikipedia.org/wiki/Anders_Jonas_Ångström

    The Ångström unit (1 Å = 10 −10 m) in which the wavelengths of light and interatomic spacings in condensed matter are sometimes measured is named after him. [6] The unit is also used in crystallography as well as spectroscopy. The crater Ångström on the Moon is named in his honour.

  5. List of physical quantities - Wikipedia

    en.wikipedia.org/wiki/List_of_physical_quantities

    Magnetic flux generated per unit current through a circuit henry (H) L 2 M T −2 I −2: scalar Irradiance: E: Electromagnetic radiation power per unit surface area W/m 2: M T −3: intensive Intensity: I: Power per unit cross sectional area W/m 2: M T −3: intensive Linear density: ρ l: Mass per unit length kg⋅m −1: L −1 M: Luminous ...

  6. Picometre - Wikipedia

    en.wikipedia.org/wiki/Picometre

    The picometre's length is of an order so small that its application is almost entirely confined to particle physics, quantum physics, chemistry, and acoustics. Atoms are between 62 and 520 pm in diameter, and the typical length of a carbon–carbon single bond is 154 pm. Smaller units still may be used to describe smaller particles (some of which are the components of atoms themselves), such ...

  7. Ångström (disambiguation) - Wikipedia

    en.wikipedia.org/wiki/Ångström_(disambiguation)

    The angstrom is a unit of length equal to 0.1 nanometre, also spelled ångström (lower case). Ångström or Angstrom may also refer to: People.

  8. Atomic units - Wikipedia

    en.wikipedia.org/wiki/Atomic_units

    They noted that the unit of length in this system is the radius of the first Bohr orbit and their velocity is the electron velocity in Bohr's model of the first orbit. In 1959, Shull and Hall [4] advocated atomic units based on Hartree's model but again chose to use ⁠ ⁠ as the defining unit.

  9. List of metric units - Wikipedia

    en.wikipedia.org/wiki/List_of_metric_units

    The fermi is a unit of distance used in nuclear physics equal to 1 fm. [9] The angstrom (symbol Å) is a unit of distance used in chemistry and atomic physics equal to 100 pm. The micron (μ) is a unit of distance equal to one micrometre (1 μm). The basic module (M) is a unit of distance equal to one hundred millimetres (100 mm).

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