Á lódáil...
Improved Photometric Standards and Calibration Procedures at NIST
NIST has recently established a detector-based luminous intensity unit (candela, cd), which is derived from the NIST absolute cryogenic radiometer. Subsequently, the luminous flux unit (lumen, lm) and the luminance unit (cd/m(2)) have been established based on the detector-based candela, and now all...
Na minha lista:
| Foilsithe in: | J Res Natl Inst Stand Technol |
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| Príomhúdar: | |
| Formáid: | Artigo |
| Teanga: | Inglês |
| Foilsithe: |
[Gaithersburg, MD] : U.S. Dept. of Commerce, National Institute of Standards and Technology
1997
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| Ábhair: | |
| Rochtain Ar Líne: | https://ncbi.nlm.nih.gov/pmc/articles/PMC4894597/ https://ncbi.nlm.nih.gov/pubmed/27805149 https://ncbi.nlm.nih.govhttp://dx.doi.org/10.6028/jres.102.022 |
| Clibeanna: |
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