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  2. Full width at half maximum - Wikipedia

    en.wikipedia.org/wiki/Full_width_at_half_maximum

    In a distribution, full width at half maximum (FWHM) is the difference between the two values of the independent variable at which the dependent variable is equal to half of its maximum value. In other words, it is the width of a spectrum curve measured between those points on the y -axis which are half the maximum amplitude.

  3. Weber electrodynamics - Wikipedia

    en.wikipedia.org/wiki/Weber_electrodynamics

    The figures show the field of an electron that is accelerated to 75 percent of the speed of light within 3 nanoseconds. Field of the electromagnetic force of an accelerated negative point charge from the perspective of a resting positive test charge in Weber electrodynamics.

  4. Fast inverse square root - Wikipedia

    en.wikipedia.org/wiki/Fast_inverse_square_root

    Lighting and reflection calculations, as in the video game OpenArena, use the fast inverse square root code to compute angles of incidence and reflection.. Fast inverse square root, sometimes referred to as Fast InvSqrt() or by the hexadecimal constant 0x5F3759DF, is an algorithm that estimates , the reciprocal (or multiplicative inverse) of the square root of a 32-bit floating-point number in ...

  5. Lorentz factor - Wikipedia

    en.wikipedia.org/wiki/Lorentz_factor

    The Lorentz factor γ is defined as [3] = = = = =, where: . v is the relative velocity between inertial reference frames,; c is the speed of light in vacuum,; β is the ratio of v to c,; t is coordinate time,

  6. Simple harmonic motion - Wikipedia

    en.wikipedia.org/wiki/Simple_harmonic_motion

    The motion of a body in which it moves to and from a definite point is also called oscillatory motion or vibratory motion. The time period is able to be calculated by T = 2 π l g {\displaystyle T=2\pi {\sqrt {\frac {l}{g}}}} where l is the distance from rotation to the object's center of mass undergoing SHM and g is gravitational acceleration.

  7. 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)

  8. Root mean square - Wikipedia

    en.wikipedia.org/wiki/Root_mean_square

    In the physics of gas molecules, the root-mean-square speed is defined as the square root of the average squared-speed. The RMS speed of an ideal gas is calculated using the following equation: v RMS = 3 R T M {\displaystyle v_{\text{RMS}}={\sqrt {3RT \over M}}}

  9. Maxwell–Bloch equations - Wikipedia

    en.wikipedia.org/wiki/Maxwell–Bloch_equations

    The equations of motion for the expectation values of the operators can be derived from the master equation by the formulas = ⁡ and ˙ = ⁡ (˙). The equations of motion for a {\displaystyle \langle a\rangle } , σ {\displaystyle \langle \sigma \rangle } , and σ z {\displaystyle \langle \sigma _{z}\rangle } , the cavity field, atomic ...