3010 Brightness 



Principle, and its application. Billet, [F.] 



Dijon Ac. Mm. 2 (1852-53) (pte. 2) 129-. 

 Eadius vector and tangent, angle between, 



geometrical problems and applications to 



optics. Piani, D. [1850] Bologna Mm. 



Ac. Sc. 4 (1853) 309-. 

 Eelation to other parts of mathematics and 



physics. Maxwell, J. C. [1874] Camb. 



Ph. S. P. 2 (1876) 338-. 

 Shadow of flame produced by itself. Lommel, 



E. Munch. Ak. Sb. 20 (1891) 5-. 

 in sunlight. Breton, Ph. Les Mondes 



23 (1870) 10-. 

 Shadows, luminous effect observed with arc 



lamps in winter. Melander, G. Helsingf. 



Ofv. 35 (1893) 93-. 

 without penumbra. Wilcocks, A. Am. Ph. 



S. P. 17 (1878) 705. 

 Spherical trigonometry in optics. Kudelka, J. 



Arch. Mth. Ps. 53 (1871) 61-. 

 Theorems, 2 well known, elementary proof. 



Matthiessen, H. F. L. Z. Mth. Ps. 19 (1874) 



176-. 

 Theoretical optics. Eadicke, G. Epm. Ps. 3 



(1839) 142-. 



3010 Photometry. Units of Light. 

 Brightness. Optical Pyrometry. 



(See also 1255 3 4200, 4202, 6080.) 



BEIGHTNESS. 



Albedo of white cardboard, determination 



not dependent on Lambert's calculation. 



Kononovic, A. N. Es. S. Nt. Mm. (Mth.) 2 



(*1879). 

 Analyser, penumbral. Mace de Ltpinay, J. 



J. de Ps. 9 (1900) 585-. 

 Black and white. Nichols, E. L. [1886] Kan. 



Ac. Sc. T. 10 (1887) 37-. 

 Colour brightness. Gruber, E. Ph. Stud. 9 



(1894) 429 

 Decrease of light in interior of room. Detlefsen, 



E. [1884] Wiirzb. Bt. I. Arb. 3 (1888) 88-. 

 Diffusion of light. Lallemand, A. C. E. 79 



(1874) 693-. 

 . Sumpner, W. E. [1892-93] L. Ps. 



S. P. 12 (1894) 10-; Ph. Mg. 35 (1893) 81-; 



Elect. 30 (1893) 381-, 411-, 439-. 



Illuminating Power 3010 



ILLUMINATING POWER. 



of candles of different dimensions. Walker, 



Ez. Nicholson J. 6 (1803) 90-. 

 and lamps. Nicholson, W. Nicholson 



J. 1 (1797) 67-. 



, method of increasing. Walker, Ez. 

 Nicholson J. 3 (1802) 272-. 



, in proportion to consumption of material. 



Walker, Ez. Nicholson J. 4 (1803) 40-. 

 , relation to size of flame. Glan, P. A. 



Ps. C. 51 (1894) 584-. 



carburetted water-gas. Billeter,0. Neuch. 

 S. Sc. fill. 15 (1886) 217-. 



electric search-lights. Tchikoleff, W., <& 

 Turin, W. Eclair. Elect. 1 (1894) 1-, 63-, 

 104-, 161-, 577- ; 2 (1895) 8-, 49-. 



enclosed arc lamps. Warner, E. P. Sc. 

 Abs. 3 (1900) 451. 



fire-fly, cheapest form of light. Langley, 

 S.P.,& Very, F. W. Am. J. Sc. 40 (1890) 

 97-. 



flames. Siemens, E. W. von. Berl. Ak. 

 Sb. (1882) 961-. 



(Siemens). Hittorf, W. A. Ps. C. 19 



(1883) 73-. 

 . Dobrzynski, F. Kosmos (Lw.) 9 (1884) 



81-. 

 . Landsberg, C. Cztg. Opt. 5 (1884) 



145-, 157-. 

 . Franchis, G. de. Em. E. Ac. Line. Ed. 



2 (1886) (Son. 1) 488-, 609-. 



gas. Elster, S. (vi Adds.) Berl. Pol. Gs. 

 Vh. 21 (1860) 249-. 



. Sugg, W. T. I. CE. P. 44 (1876) 



151-. 



. Edler, . N.-Vorp. Mt. 24 (1892) x-. 



: amount of light obtained from given 



quantities of coal. Farmer, W. [1876] Am. 



C. 7 (1877) 54-. 

 : best means of developing light from 



coal gas of different qualities. Wallace, W. 

 . B. A. Ep. (1878) 108-. 

 , candles and lamps compared with electric 



and lime lights. Elster, S. Carl Epm. 4 



(1868) 171-. 

 at different distances from manufactory. 



Fyfe, A. Edinb. N. Ph. J. 36 (1844) 223-. 

 , increase by benzene vapour. Easpe, F. 



Eussl. Phm. Z. 1 (1862-63) 93-. 

 , influence of compression. Love, E. G. 



--- , even, globes for. Fredureau,. C. S. C. In. J. 15 (1896) 339-. 



E. 115 (1892) 1064-. 

 -- _ within translucent bodies, photometric 



researches. Chvolson, 0. [1886] St. Pe"t. 



Ac. Sc. Bll. 31 (1887) 213-. 

 , tables for computing. Becker, G. F. Am. 



J. Sc. 3 (1897) 280-. 

 Distribution of light in electric lighting. 



Clemenceau, P. 



244-. 

 --- on surface. 



Mth. 17 (1852) 79-. 



-- , -- indiarubber tubes. Zulkowsky, K. 



D. C. Gs. B. 5 (1872) 759-. 

 __ jets with flat flames. Aignan, A., & 



Chabot, P. Bordeaux S. Sc. Mm. 2 (1891) 



xxiv-. 

 -- : oil- and coal-gas compared. Ricardo, 



_. Thomson A. Ph. 1 (1821) 209-, 333-. 

 Lum. Elect. 11 (1884) 149-, __ : _____ . Fyfe, A. Edinb. Ph. 



j. 11 (1824) 171-. 

 _ --- . Christison, R., <6 



Turner, . Tilloch Ph. Mg. 66 (1825) 206-. 

 -- : ----- , and construction of gas 



burners. Christison, R., & Turner, . 



Edinb. Ph. J. 13 (1825) 1-. 

 275 s 2 



Breton, Ph. Liouv. J. 



