Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 284
gas down to the proper pressurefor the flame. The higlier the supplypressure, the greater should be thedifference between the two numbersand vice versa. This preserves theform of the flame and saves gas. Incandescent mantle burners of alltypes are comparatively high-pressureappliances. Not that… … entraining the primary air into theBunsen tube. Ordinary indoor incan-descent burners are most efficientunder an actmg gas pressure at thenipple of about twenty-tenths, andshould always be governed or regulatedto this by a suitable appliance inde-pendent of the burner cock. Allburners should be so…
Lighting
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![An illustration from XIXe [i.e. Dix-neuvième] siècle (en France); classes - moeurs - usages - costumes - inventions. Ouvrage illustré d'un front. chromotypographique, de 16 planches coloriées aux patrons, de 36 entetes et lettres ornées et de 487 gravures (dont 24 tirées hors texte) d'après les principaux artistes du siècle (1893)](https://img.insideoutlibrary.com/img/200/ia-xixeiedixneuvi00granuoft-490-349.webp)
