Classical physics can be defined as the limit of quantum mechanics as this quantity tends to zero.
Classical physics can be defined as the limit of quantum mechanics as this quantity tends to zero. It was originally proposed in reference to black-body radiation, where E, the quantized energy of the photons of radiation, equals this quantity times nu, the frequency. A related constant which is useful when calculating with angular frequency instead of constant frequency is called (*) Dirac's constant, and is simply this constant divided by 2 pi. It is denoted by the letter h and has a value of approximately 6.626 times 10-34 Joule-seconds. FTP, name this physical constant named after a German physicist, which describes the sizes of quanta.
Classical physics can be defined as the limit of quantum mechanics as this quantity tends to zero.
{Planck} constant or {Planck's} constant (prompt on {h} early, do not accept {h}-{bar})