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  2. Power of 10 - Wikipedia

    en.wikipedia.org/wiki/Power_of_10

    Power of 10. Visualisation of powers of 10 from one to 1 trillion. A power of 10 is any of the integer powers of the number ten; in other words, ten multiplied by itself a certain number of times (when the power is a positive integer). By definition, the number one is a power (the zeroth power) of ten. The first few non-negative powers of ten are:

  3. Conductivity (electrolytic) - Wikipedia

    en.wikipedia.org/wiki/Conductivity_(electrolytic)

    The preparation of salt solutions often takes place in unsealed beakers. In this case the conductivity of purified water often is 10 to 20 times higher. A discussion can be found below. Typical drinking water is in the range of 200–800 μS/cm, while sea water is about 50 mS/cm [3] (or 0.05 S/cm).

  4. Dyne - Wikipedia

    en.wikipedia.org/wiki/Dyne

    Definition. The dyne is defined as "the force required to accelerate a mass of one gram at a rate of one centimetre per second squared". [2] An equivalent definition of the dyne is "that force which, acting for one second, will produce a change of velocity of one centimetre per second in a mass of one gram". [3]

  5. Orders of magnitude (frequency) - Wikipedia

    en.wikipedia.org/wiki/Orders_of_magnitude...

    The following list illustrates various frequencies, measured in hertz, according to decade in the order of their magnitudes, with the negative decades illustrated by events and positive decades by acoustic or electromagnetic uses. Factor. ( Hz ) Multiple. Value. Item. 10 −18. 1 attohertz (aHz) ~2.2978 aHz.

  6. Farad - Wikipedia

    en.wikipedia.org/wiki/Farad

    The farad (symbol: F) is the unit of electrical capacitance, the ability of a body to store an electrical charge, in the International System of Units (SI), equivalent to 1 coulomb per volt (C/V). [1] It is named after the English physicist Michael Faraday (1791–1867). In SI base units 1 F = 1 kg −1 ⋅ m −2 ⋅ s 4 ⋅ A 2 .

  7. Wavenumber - Wikipedia

    en.wikipedia.org/wiki/Wavenumber

    In the physical sciences, the wavenumber(or wave number), also known as repetency,[1]is the spatial frequencyof a wave, measured in cyclesper unit distance (ordinary wavenumber) or radiansper unit distance (angular wavenumber). [2][3][4]It is analogous to temporal frequency, which is defined as the number of wave cycles per unit time (ordinary ...

  8. Gravitational constant - Wikipedia

    en.wikipedia.org/wiki/Gravitational_constant

    The result reported by Charles Hutton (1778) suggested a density of 4.5 g/cm 3 (⁠4 + 1 / 2times the density of water), about 20% below the modern value. [14] This immediately led to estimates on the densities and masses of the Sun, Moon and planets, sent by Hutton to Jérôme Lalande for inclusion in his planetary tables.

  9. Weber (unit) - Wikipedia

    en.wikipedia.org/wiki/Weber_(unit)

    In physics, the weber ( / ˈveɪb -, ˈwɛb.ər / VAY-, WEH-bər; [1] [2] symbol: Wb) is the unit of magnetic flux in the International System of Units (SI). The unit is derived (through Faraday's law of induction) from the relationship 1 Wb = 1 V⋅s (volt-second). A magnetic flux density of 1 Wb/m 2 (one weber per square metre) is one tesla .