Rensselaer Republican, Volume 28, Number 17, Rensselaer, Jasper County, 31 December 1896 — Standard for Light Wanted. [ARTICLE]

Standard for Light Wanted.

A' Stibcommittee’of the American Institute of Electrical Engineers, ape pointed in 1593 to investigate the subject of a suitable staiulard of light for' photometric purposes, jtas recently Issued a preliminary report. Of all the standards thus far used it finds the candle the least reliable.- It i's-Ltlso evident from the bolometrlc curves that naked, flames are subject to sudden and rapidly recurring fluctuations that nffty be alippst entirely eliminated by the use of a properly constructed ehimftey. it sodms likely that many of the diffl(%lties Which are unavoidable with flame standards may„be overcome by the adoption of a standard consisting of Some surface electrically heated to a standard temperature. With this objedt the results of tlie committee's experiments on incandescent earbou will be looked forward' h>- ‘ ~