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  2. Seismic magnitude scales - Wikipedia

    en.wikipedia.org/wiki/Seismic_magnitude_scales

    Seismic moment is measured in Newton-meters (Nm or N·m) in the SI system of measurement, or dyne-centimeters (dyn-cm; 1 dyn-cm = 10 −7 Nm) in the older CGS system. In the simplest case the moment can be calculated knowing only the amount of slip, the area of the surface ruptured or slipped, and a factor for the resistance or friction ...

  3. Newton scale - Wikipedia

    en.wikipedia.org/wiki/Newton_scale

    The Newton scale is a temperature scale devised by Isaac Newton in 1701. [ 1 ] [ 2 ] He called his device a " thermometer ", but he did not use the term "temperature", speaking of "degrees of heat" ( gradus caloris ) instead.

  4. List of conversion factors - Wikipedia

    en.wikipedia.org/wiki/List_of_conversion_factors

    ≡ m e ⋅α 2 ⋅c 2 (= 2 Ry) ≈ 4.359 744 × 10 −18 J: horsepower-hour: hp⋅h ≡ 1 hp × 1 h = 2.684 519 537 696 172 792 × 10 6 J: inch-pound force: in lbf ≡ g 0 × 1 lb × 1 in = 0.112 984 829 027 6167 J: joule (SI unit) J The work done when a force of one newton moves the point of its application a distance of one metre in the ...

  5. Orders of magnitude (length) - Wikipedia

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

    3 nm – the average half-pitch of a memory cell manufactured circa 2022; 3.4 nm – length of a DNA turn (10 bp) 3.8 nm – size of an albumin molecule; 5 nm – size of the gate length of a 16 nm processor; 5 nm – the average half-pitch of a memory cell manufactured circa 2019–2020; 6 nm – length of a phospholipid bilayer

  6. Moment magnitude scale - Wikipedia

    en.wikipedia.org/wiki/Moment_magnitude_scale

    (A) and estimated M s and denoted as M w (dyn.cm). The energy Eq. The energy Eq. (A) is derived by substituting m = 2.5 + 0.63 M in the energy equation Log E = 5.8 + 2.4 m (Richter 1958), where m is the Gutenberg unified magnitude and M is a least squares approximation to the magnitude determined from surface wave magnitudes.

  7. SI derived unit - Wikipedia

    en.wikipedia.org/wiki/SI_derived_unit

    newton per metre: N/m = J/m 2: surface tension, stiffness: kg⋅s −2: watt per square metre: W/m 2: heat flux density, irradiance: kg⋅s −3: square metre per second: m 2 /s kinematic viscosity, thermal diffusivity, diffusion coefficient m 2 ⋅s −1: pascal-second: Pa⋅s = N⋅s/m 2: dynamic viscosity: m −1 ⋅kg⋅s −1: kilogram per ...

  8. Conversion of units - Wikipedia

    en.wikipedia.org/wiki/Conversion_of_units

    The factor–label method can convert only unit quantities for which the units are in a linear relationship intersecting at 0 (ratio scale in Stevens's typology). Most conversions fit this paradigm. An example for which it cannot be used is the conversion between the Celsius scale and the Kelvin scale (or the Fahrenheit scale). Between degrees ...

  9. Orders of magnitude (energy) - Wikipedia

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

    List of orders of magnitude for energy; Factor (joules) SI prefix Value Item 10 −34: 6.626 × 10 −34 J: Energy of a photon with a frequency of 1 hertz. [1]8 × 10 −34 J: Average kinetic energy of translational motion of a molecule at the lowest temperature reached (38 picokelvin [2] as of 2021)