Journal . our. XIXa. Determination of oxygen in waters in presence ofnitrite. Elvove. See XIXb. 52 NEW BOOKS. [Jan. 15, 1915. Bl^iod eJuircoal as i>aratus for indicating the presence and estimatingthe proportion of a gas [firedamp] admixed trithair or other gases. Eng. Pat. 26,001. See IIa. Process of photometry. Ft. Pat. 469,356. See XXI. Gas analysis ; Apparatus for automaticWestover, Xew York. PatSept. 29, 1914. A. O. Cochrane, Middlesbrough, Yorks. Eng. Pat. 27,633, Dec. 1, luminous rays from the hot body are focussedby a telescope separated into two parts by a
Journal . our. XIXa. Determination of oxygen in waters in presence ofnitrite. Elvove. See XIXb. 52 NEW BOOKS. [Jan. 15, 1915. Bl^iod eJuircoal as i>aratus for indicating the presence and estimatingthe proportion of a gas [firedamp] admixed trithair or other gases. Eng. Pat. 26,001. See IIa. Process of photometry. Ft. Pat. 469,356. See XXI. Gas analysis ; Apparatus for automaticWestover, Xew York. PatSept. 29, 1914. A. O. Cochrane, Middlesbrough, Yorks. Eng. Pat. 27,633, Dec. 1, luminous rays from the hot body are focussedby a telescope separated into two parts by a boscontaining the Ught-absorbing element. This mayconsist of a wedge-shaped glass container flUedwith a solution of one or more aniline dyes, or ofa wedge of neutral glass. A compensatingwedge of plain glass eUminates refraction. Theabsorption wedge is moved by a rack and pinionuntil the Ught is just cut off, a quadi-ant diaphragmassisting in the determination of this point. Theposition of the wedge as indicated on a scale isa measure of the temperature of the hot body. —W. F. F. Pyrometer ; Optical . A. C. Burleigh, Sewick- ley, Pa. Pat. 1,119,571, Dec. 1, of Sept. 3, STRIP of metal through which an electric currentpasses, is surrounded by a glass cylinder, and ashield is provided within the cylinder having anopening ttoough which the central part of thestrip is exposed, and through which the h
Size: 1048px × 2385px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1880, booksubjectchemist, bookyear1882
