Phot
| Phot | |
| Informations | |
|---|---|
| Système | CGS |
| Unité de… | Éclairement lumineux |
| Symbole | ph |
| Conversions | |
| 1 ph en… | est égal à… |
| Unités SI | 104 lx |
| modifier |
|
Le phot (symbole ph) est l'unité CGS d'éclairement lumineux[a],[2] :
- 1 ph = 1 cd sr cm−2 = 1 lm cm−2 = 104 lm m−2 = 104 lx
avec :
- cd : candela (unité SI d'intensité lumineuse) ;
- sr : stéradian (unité SI d'angle solide) ;
- m : mètre (unité SI de longueur) ;
- lm : lumen (unité SI de flux lumineux) ;
- lx : lux (unité SI d'éclairement lumineux).
Notes et références
Notes
Références
- ↑ BIPM, Le Système international d'unités, Sèvres (France), , 8e éd., 180 p. (ISBN 92-822-2213-6, lire en ligne [PDF]).
- ↑ Michel Dubesset, Le manuel du Système international d'unités : lexique et conversions, Paris, TECHNIP, , 169 p. (ISBN 2-7108-0762-9, lire en ligne), p. 99.
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