3640 Diffraction by Particles 



Colours by diffraction through Lycopodium 

 dust. Osann, G. Wiirzb. Vh. 9 (1859) 

 161-. 



powders on glass plates. Delezenne, 



. Lille Mm. S. (1836-38) 29-. 



in steam. Bock, A. A. Ps. C. 68 (1899) 

 674-. 



Crepuscular light and red rays of sun, dis- 

 similarity. Lais, G. Em. N. Line. At. 37 



(1884) 125-. 

 Fraunhofer's rings and colour phenomena of 



breathed-on plates. Donle, W. A. Ps. C. 



34 (1888) 801-. 

 , Quetelet's bands and allied phenomena. 



Exner, K. [1877] Wien Ak. Sb. 76 (1878) 



(Ab. 2) 522-. 

 Illumination in fog. Eayleigh, (Lord). L. 



Ps. S. P. 7 (1886) 87-; Ph. Mg. 19 (1885) 



443-. 

 Influence of artificial mist on sunlight. Kiess- 



ling, . Gott. Nr. (1884) 226-; Hamb. 



Nt. Vr. Ab. 8 (1884) No. 5, 8 pp.; Met. Z. 1 



(1884) 83, 117-. 



impurities in air on diffraction. Kiess- 

 ling, J. Met. Z. 1 (1884) 34. 



Iridescent cirrus. Laska, W. Met. Z. 3 (1886) 



276. 

 Iriscope. Bead, J. B. A. Bp. (1840) (pt. 2) 



14. 

 Light, transmitted and diffused, phenomena. 



Lea, M. C. Am. J. Sc. 47 (1869) 364-. 

 through liquid in which a precipitate is 



forming. Hurion, . As. Fr. C. B. (1890) 



(Pt. 2) 249-. 

 Particles, fine, method of measuring average 



size, and a theory of Fresnel's. Rood, 0. N. 



[1866] Am. J. Sc. 43 (1867) 104-. 

 , very small, action on light. Parker, J. S. 



Nt. 31 (1885) 481-. 

 , numerous small, diffraction due to. Exner, 



K. Wien Ak. Sb. 90 (1885) (Ab. 2) 827-. 

 Photographic halo. Cornu, A. C. B. 110 



(1890) 551- ; As. Fr. C. B. (1890) (Pt. 2) 



260-. 

 Bings of breathed-on glass plates. Exner, K. 



Wien Ak. Sb. 98 (1890) (Ab. 2a) 1130-. 

 Scattering of light by finely divided substances. 



Christiansen, C. A. Ps. C. 23 (1884) 298- ; 



24 (1885) 439-. 

 metallic particles. Threlfall, R. 



Ph. Mg. 38 (1894) 446-. 

 small particles. Rayleigh, (Lord). 



Ph. Mg. 41 (1871) 447-. 

 . Kiessling, J. Hamb. Mth. 



Gs. Mt. 1 (1889) 289-. 

 . Walker, G. W. QJ. Mth. 



30 (1899) 204-. 

 Soot, optical properties. Rosicky, W. [1878] 



Wien Ak. Sb. 78 (1879) (Ab. 2) 417-. 

 Sphere, motion of light within and without 



when illuminated by plane waves. Lor em, 



L. [1890] Kj^b. Dn. Vd. Selsk. Skr. 6 



(1890-92) 1-; Fschr. Ps. (1891) (Ab. 2) 



28-. 

 Turbid media, intensity of radiation through. 



Abney, (Capt.) , & Festing, (Maj.-Gen.) . 



B. S. P. 40 (1886) 378-. 



Definition in Instruments 3650 



3650 Definition of Optical In- 

 struments, General Theory. 

 (See also 3080, 3082.) 



Schroder, H. D. Nf. Tbl. (*1876) (BM.) 74-. 



Abbe diffraction plate. Smith, T. F. [1889] 

 Quek. Mcr. Cl. J. 4 (1892) 5-. 



Aperture and definition of optical instruments, 

 application of photography to. Rayleigh, 

 (Lord). [1891] B. I. P. 13 (1893) 261-. 



, relation to determination of minute struc- 

 ture. Cox, C. F. Mcr. S. J. (1895) 589-. 



and resolution by lenses, relations between. 

 Wright, L. Mcr. S. J. 4 (1884) 289-. 



"Central" light in resolution. Stephewon, 



J. W. Mcr. S. J. 6 (1886) 37-. 

 High power definition. Royston-Pigott, G. W. 



M. Mcr. J. 2 (1869) 295- ; 3 (1870) 192-. 

 . Wenham, F. H. M. Mcr. J. 3 (1870) 



300-. 

 . Beaumont, E. B., <& Royston-Pigott, 



. B. S. P. 21 (1873) 422-. 

 . Royston-Pigott, G. W. B. S. P. 29 



(1879) 164- ; 31 (1881) 260-, 505-. 



and its difficulties. Royston-Pigott, 

 G. W. QJ. Mcr. Sc. 10 (1870) 168-. 



of minute organic particles. Royston- 

 Pigott, G. W. M. Mcr. J. 10 (1873) 16-, 

 107-. 



, monochromatic sunlight as aid to. 



Woodward, J. J. Am. Nt. 6 (1872) 454-. 



Illumination by wide-angled cones of light. 

 Abbe, E. Mcr. S. J. (1889) 721-. 



Images formed without reflection or refraction. 

 Rayleigh, (Lord). [1880] Ph. Mg. 11 (1881) 

 214-. 



, microscopic, conditions of truth. Castel- 

 larnau y de Lleopart, J. H. de.' Madrid S. 

 H. Nt. A. 14 (1885) 258-. 



, , theory of formation. Altmann, R. 

 Arch. An. PI. (An. Ab.) (1880) 111-. 



, , (Altmann). Abbe, E. Jena. 



Sb. (1880) 71-. 



, , (Abbe). Altmann, R. Arch. 



An. PI. (An. Ab.) (1880) 354-; (1882) 52-. 



, , ( ). Francotte, P. [1885] 



Brux. S. Big. Mcr. Bll. 11 (1886) 108-. 



, optical, distinctness. Holten, C. Sk. Nf. 

 F. 5 (1847) 240-. 



, , with special reference to micro- 

 scope. Rayleigh, (Lord). Ph. Mg. 42 

 (1896) 167-. 



, true and false, interference phenomena in 

 relation to. Lowne, B. T. Quek. Mcr. Cl. 

 J. 3 (1889) 360-. 



Microscope objective, resolving power and dif- 

 fraction of finest grating it can resolve, re- 

 lation between. Leroy, C. J. A. Par. S. 

 Ps. Se. (1888) 259-. 



, penetrating power. Davis, G. E. Manch. 

 Mcr. S. Bp. (*1883-84) 16-. 



, . Nelson, E. M. Mcr. S. J. (1892) 



331-. 



, power to see parallel lines. Broun, J. A. 

 B. S. P. 23 (1875) 522-. 



372 



