The New Encyclopaedia Britannica, Volumes 1-10Encyclopaedia Britannica, 1974 - Reference [1] Propaedia: outline of knowledge and guide to the Britannica.--[2]-[11] Micropaedia: ready reference and index.--[12]-[30] Macropaedia: knowledge in depth. |
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Page 235
... spectra in the infrared region Radio spectro- scopy. hole in a window blind . Much later , 1800-02 , several im- portant discoveries were made with similar equipment . The English astronomer William Herschel probed the solar spectrum ...
... spectra in the infrared region Radio spectro- scopy. hole in a window blind . Much later , 1800-02 , several im- portant discoveries were made with similar equipment . The English astronomer William Herschel probed the solar spectrum ...
Page 242
... spectra have been made at low dispersion , partly because a short exposure or the use of a slow or small telescope was necessary . Such spectra show the gross features well , but fine details can best be studied only on the rare ...
... spectra have been made at low dispersion , partly because a short exposure or the use of a slow or small telescope was necessary . Such spectra show the gross features well , but fine details can best be studied only on the rare ...
Page 244
... spectra in much the same way as the spectra of individual , relatively close stars and also to obtain some idea of which kinds of star contribute most to the light . Galactic spectra resemble the spectra of the median type of their ...
... spectra in much the same way as the spectra of individual , relatively close stars and also to obtain some idea of which kinds of star contribute most to the light . Galactic spectra resemble the spectra of the median type of their ...
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The New Encyclopaedia Britannica, Volumes 1-10 Encyclopaedia Britannica Publishers, Inc. Staff No preview available - 1974 |
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19th century aesthetic ancient areas armour army arthropods artiodactyls artists aschelminths Asia Asian Assam Asterales astronomical atheism Athens atheriniforms Atlantic atmosphere atoms Basin beryciforms Cenozoic Central centre China climate countries criticism culture early Earth East economic effect electrons elements energy exosphere Finland forces forest fossil France function galaxies Games gases gastrotrichs German Greek groups Gt.Brit heterosphere Hittite homosphere hydrogen important increase India Indonesia industrial Italy Japan kilometres layer lines literature mass ment metres miles military modern molecules mountain North occur Ocean Olympic orbit organization original oxygen painting particles percent period planets Pleistocene political population priapulids produced radiation radio range region religion result rotifers Siberia social society solar South Southeast Southeast Asia southern Soviet species spectra spectrum stars structure style surface Sweden temperature theory tion tradition ture types usually wavelengths western zone