4206 



Influence of Physical Conditions on Spectra 



4206 



4206 Influence of Pressure, Tem- 

 perature, etc., on Spectra. 



Flame spectra lines, especially sodium, method 



of demonstrating reversal. GUnther, C. A. 



Ps. C. 2 (1877) 477-. 

 Gases, causes of different spectra. Willlner, A. 



Halle Z. Nw. 40 (1872) 184-. 

 , glowing, changeability of spectra. Schenk, 0. 



Fresenius Z. 12 (1873) 386-. 

 , transition between different forms of 



spectra. Willlner, A. Berl. Ak. Sb. (1889) 



793-. 

 Hydrogen tubes, illuminating power and energy 



in, relation. Nebel,B. Exner Epm. 21 (1885) 



671-. 



INFLUENCE OF DENSITY. 



Broadening of D lines. Wanner, H. A. Ps. 



C. 68 (1899) 143-. 

 hydrogen lines. Fievez, C. Brux. Ac. 



Bll. 1 (1881) 324-; C. B. 92 (1881) 521-. 

 . Monckhoven, D. van. C. K. 95 



(1882) 378-. 

 lines. Michelson,A.A. Asps. J. 2 (1895) 



251-. 



on increase of density and tempera- 

 ture, theory. Galitzine, B. St. Pet. Ac. Sc. 



Bll. 2 (1895) 397-. 

 , (Galitzine). 



Mebius, C. A. Stockh. Ofv. (1898) 485-; 



Fschr. Ps. (1898) (Ab. 2) 41. 

 in metallic spectra. Gouy, . C. E. 



108 (1889) 1236-. 



and reversal of lines. Voigt, W. A. Ps. C. 

 68 (1899) 604-. 



Calcium spectrum. Hug gins, (Sir) W., <& 

 Hugging, M. L. (Lady). Asps. J. 6 (1897) 

 327. 



, H and K lines, relative behaviour. 

 Huggins, (Sir) W., & Huggins, M. L. (Lady). 



B. S. P. 61 (1897) 433-. 



Disappearance of some spectral lines. Varia- 

 tions of metallic spectra due to mixed vapours. 

 Dewar, J., <& Liveing, G. D. B. S. P. 33 

 (1882) 428-. 



Gas, influence of impurities on spectra. Lewis, 

 P. A. Ps. C. 69 (1899) 398-; A. Ps. 2 

 (1900) 447-. 



Gases, influence of density and temperature on 

 spectra. Zollner,F. Leip. B. 22 (1870) 233-. 



and vapours, influence of density and 

 temperature on spectra. Ciamician, G. L. 

 [1878] Wien Ak. Sb. 78 (1879) (Ab. 2) 867-. 



Metals, arc spectra, influence of atmosphere of 



hydrogen. Crew,H. Asps. J. 12 U900) 167-. 

 Mixtures, gaseous, and discharge shells, spectra. 



Goldstein, E. D. Ps. Gs. Vh. (1900) 110-. 

 .spectra. Eollefson, C. J. Ps. Ev. 11 (1900) 



101-. 

 Moist electrodes, length of spectral lines with. 



Hartley, W. N. B. A. Ep. (1883) 127-. 

 , (Hartley). Wiedemann, E. 



C. N. 49 (1884) 117. 



, (Wiedemann). Hartley, 



W. N. C. N. 49 (1884) 149. 



INFLUENCE OF PEESSUEE. 



Flames, spectra. Liveing, G. D., & Dewar, J. 



B. S. P. 49 (1891) 217-. 

 Gases under high pressures, spectra. Wiillner, 



A. A. Ps. C. 137 (1869) 337-. 

 , . Willlner, A., & Bettendorff, A. 



Bonn Vh. NH. Vr. 26 (1869) 23-. 

 , mixed, at low pressures, spectra. Ferry, 



E. S. Ps. Ev. 7 (1898) 296-. 

 , spectra. Wiedemann, E. E. G. A. Ps. C. 



6 (1879) 298-. 



, , influence of increased pressure. Wull- 

 ner, F. H. A. A. C. E. 85 (1877) 280-. 

 , , pressure on character. Lee, G. H. , 



& Stearn, C. H. E. S. P. 21 (1873) 282-. 

 , , and temperature. Willlner, A. 



Arch. Sc. Ps. Nt. 40 (1871) 305-. 

 , , . Schuster, A. B. A. 



Ep. 43 (1873) (Sect.) 39; (1880) 275-. 



and vapours, spectra, influence of pressure 

 and temperature. Ciamician, G. L. Wien 

 Ak. Sb. 77 (1878) (Ab. 2) 839-. 



Spectral lines. Cailletet, L. C. E. 74 (1872) 



1282-. 

 . Larmor, J. B. A. Ep. (1897) 555-. 



series. Ames, J. S., & Humphreys, W. J. 

 J. H. Un. Cir. [16 (1896-97)] 41-. 



Sun and stars, means of determining pressure 



at surface. Wiedemann, E. E. G. L. Ps. 



S. P. 4 (1881) 31-; Ph. Mg. 10 (1880) 123-. 

 Wave-lengths (arc spectra of elements). 



Humphreys, W. J., & Mohler, J. F. Am. 



As. P. (1895) 57-; Asps. J. 3 (1896) 114-. 



( ). Hale, G. E. Asps. J. 3 (1896) 



156-. 



. Mohler, J. F. Asps. J. 4 (1896) 175-, 

 374. 



(arc spectra of elements). Humphreys, W. J. 

 Asps. J. 4 (1896) 249-. 



(emission spectra of elements). Humphreys, 

 W. J. J. H. Un. Cir. [16 (1896-97)] 43-; 

 B. A. Ep. (1897) 556-; Asps. J. 6 (1897) 169-. 



. Wilsing, J. Asps. J. 7 (1898) 317-. 

 . Godfrey, C. Asps. J. 8 (1898) 114. 



of hydrogen lines. Wilsing, J. Berl. Ak. 

 Sb. (1899) 750-. 



INFLUENCE OF TEMPEEATUEE. 



Absorption spectra. Volchonskij, E. D. Vars. 



S. Nt. Tr. (1897) (Ps. C.) Fasc. 2, Mem. 5. 

 Carbon, incandescent, 2 spectra produced at 



same temperature. Watts, W. M. C. N. 22 



(1870) 172-. 

 Gases at low temperatures, spectra. Koch, K. E. 



A. Ps. C. 38 (1889) 213-. 

 Metalloids, spectra. Monckhoven, D. van. C.E. 



95 (1882) 520-. 

 Metals, spectrum. Eoscoe, H. E., & Clifton, 



E. B. Manch. Ph. S. P. 2 (1860-62) 227-. 

 Spectral lines. Fievez, C. Brux. Ac. Bll. 7 



(1884) 348-. 

 of low temperature. Salisbury, (Marquis 



of). Ph. Mg. 45 (1873) 241-. 



reaction. Cappel, E. A. Ps. C. 139 (1870) 

 628-. 



440 



