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  2. List of common physics notations - Wikipedia

    en.wikipedia.org/wiki/List_of_common_physics...

    imaginary unit: unitless electric current: ampere (A) ^ Cartesian x-axis basis unit vector unitless current density: ampere per square meter (A/m 2) impulse: kilogram meter per second (kg⋅m/s) jerk: meter per second cubed (m/s 3)

  3. List of physical quantities - Wikipedia

    en.wikipedia.org/wiki/List_of_physical_quantities

    Symbol Description SI derived unit Dimension Comments Absement: A: Measure of sustained displacement: the first integral with respect to time of displacement m⋅s L T: vector Acceleration: a →: Rate of change of velocity per unit time: the second time derivative of position m/s 2: L T −2: vector Angular acceleration: ω a: Change in ...

  4. Quantities, Units and Symbols in Physical Chemistry

    en.wikipedia.org/wiki/Quantities,_Units_and...

    The second edition of the Green Book (ISBN 0-632-03583-8) was first published in 1993. It was reprinted in 1995, 1996, and 1998. It was reprinted in 1995, 1996, and 1998. The Green Book is a direct successor of the Manual of Symbols and Terminology for Physicochemical Quantities and Units , originally prepared for publication on behalf of IUPAC ...

  5. List of physical constants - Wikipedia

    en.wikipedia.org/wiki/List_of_physical_constants

    The constants listed here are known values of physical constants expressed in SI units; that is, physical quantities that are generally believed to be universal in nature and thus are independent of the unit system in which they are measured. Many of these are redundant, in the sense that they obey a known relationship with other physical ...

  6. ISO 31-8 - Wikipedia

    en.wikipedia.org/wiki/ISO_31-8

    The list given in ISO 31-8:1992 was quoted from the 1998 IUPAC "Green Book" Quantities, Units and Symbols in Physical Chemistry and adds in some cases in parentheses the Latin name for information, where the standard symbol has no relation to the English name of the element. Since the 1992 edition of the standard was published, some elements ...

  7. Physical quantity - Wikipedia

    en.wikipedia.org/wiki/Physical_quantity

    A physical quantity can be expressed as a value, which is the algebraic multiplication of a numerical value and a unit of measurement. For example, the physical quantity mass, symbol m, can be quantified as m=n kg, where n is the numerical value and kg is the unit symbol (for kilogram). Quantities that are vectors have, besides numerical value ...

  8. International System of Units - Wikipedia

    en.wikipedia.org/wiki/International_System_of_Units

    The kilogram is the only coherent SI unit whose name and symbol include a prefix. For historical reasons, the names and symbols for multiples and sub-multiples of the unit of mass are formed as if the gram were the base unit. Prefix names and symbols are attached to the unit name gram and the unit symbol g

  9. 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 ⁠ ℏ {\displaystyle \hbar } ⁠ as the defining unit.

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