Planck constant

Term · Chemistry · MLC-T-CHM-013404

A fundamental physical constant that relates the energy of a photon to its frequency. It is a cornerstone of quantum mechanics, describing the quantization of energy and other physical quantities at the atomic and subatomic levels. The constant has a fixed value of 6.626 070 15 × 10^-34 joule-seconds (J⋅s) in the International System of Units.

Table 1. Record
Identifier	MLC-T-CHM-013404
Field	Chemistry
References	BIPM, The International System of Units, SI Brochure, 9th ed. (2019), p. 127 (https://www.bipm.org/en/publications/si-brochure/); Newell et al., Metrologia 55, L13-L16 (2018) (https://doi.org/10.1088/1681-7575/aa950a)

Record as JSON

{
  "id": "MLC-T-CHM-013404",
  "term": "Planck constant",
  "field": "Chemistry",
  "definition": "A fundamental physical constant that relates the energy of a photon to its frequency. It is a cornerstone of quantum mechanics, describing the quantization of energy and other physical quantities at the atomic and subatomic levels. The constant has a fixed value of 6.626 070 15 × 10^-34 joule-seconds (J⋅s) in the International System of Units.",
  "references": [
    "BIPM, The International System of Units, SI Brochure, 9th ed. (2019), p. 127 (https://www.bipm.org/en/publications/si-brochure/)",
    "Newell et al., Metrologia 55, L13-L16 (2018) (https://doi.org/10.1088/1681-7575/aa950a)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/planck-constant/"
}

Record 9,556 of 13,676 in Chemistry terminology (MLC-0109). Request the full dataset.