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Jules Violle
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Jules Louis Gabriel Violle was a French physicist and inventor.
PSM V18 D029 The violle actinometer
PSM V18 D029 The violle actinometer
Candela
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Candela is the SI unit of luminous intensity. It measures the luminous power per unit solid angle emitted in a particular direction. A common wax candle has a luminous intensity of roughly 1 cd.
Jules Violle
…that did not depend on the properties of a particular lamp. This was much larger than traditional measures such as candlepower, so the standard SI unit candela was originally defined in 1946 as 1/60 Violle. During his career, Violle taught at several colleges including the University of Lyon and the Conservatoire…
1=radiating tube of thorium dioxide; 2=melting pot; 3=solidifying platinum
1=radiating tube of thorium dioxide; 2=melting pot; 3=solidifying platinum