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QUANTUM ACTION [1 record]
Record 1 - internal organization data 2023-10-17
Record 1, English
Record 1, Subject field(s)
- Metrology and Units of Measure
- Electromagnetic Radiation
Universal entry(ies) Record 1
Record 1, Main entry term, English
- Planck's constant
1, record 1, English, Planck%27s%20constant
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
- quantum of action 2, record 1, English, quantum%20of%20action
correct
Record 1, Textual support, English
Record number: 1, Textual support number: 1 CONT
The dimension of Planck's constant is the product of energy multiplied by time, a quantity called action. Planck's constant is often defined, therefore, as the elementary quantum of action. Its value in metre-kilogram-second units is defined as exactly (6.62607015 ×[exponent-34] joule seconds). 3, record 1, English, - Planck%27s%20constant
Record number: 1, Textual support number: 1 OBS
Back in 1985, the accepted value was h = (6.626176 x 10[exponent-34] Joule-seconds). The current calculation, done in 2018, is h = (6.62607015 x 10[exponent-34] Joule-seconds). 4, record 1, English, - Planck%27s%20constant
Record 1, French
Record 1, Domaine(s)
- Unités de mesure et métrologie
- Rayonnements électromagnétiques
Entrée(s) universelle(s) Record 1
Record 1, Main entry term, French
- constante de Planck
1, record 1, French, constante%20de%20Planck
correct, feminine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
- quantum d'action 2, record 1, French, quantum%20d%27action
correct, masculine noun
Record 1, Textual support, French
Record number: 1, Textual support number: 1 CONT
En physique, la constante de Planck, notée h, également connue sous le nom de «quantum d'action» depuis son introduction dans la théorie des quanta, est une constante physique qui a la même dimension qu'une énergie multipliée par une durée. 3, record 1, French, - constante%20de%20Planck
Record number: 1, Textual support number: 1 OBS
La valeur de la constante de Planck est passée de (6,626176 x 10[exposant-34] Joule-secondes) à h = (6,62607015 x 10[exposant-34] Joule-secondes) en 2018 en raison de l'amélioration de la précision des instruments. 4, record 1, French, - constante%20de%20Planck
Record 1, Spanish
Record 1, Textual support, Spanish
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