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 232
... Astronomical Spectroscopy , Principles of Continu- ous Spectral image of star group Hyades , viewed. Cassini ; 53 centimetres across , this superbly engraved work prepared between 1671 and 1679 shows each fea- ture in relief as if ...
... Astronomical Spectroscopy , Principles of Continu- ous Spectral image of star group Hyades , viewed. Cassini ; 53 centimetres across , this superbly engraved work prepared between 1671 and 1679 shows each fea- ture in relief as if ...
Page 250
... astronomical unit has been found to a precision of about 100 kilo- metres ( limited by knowledge of the speed of light ) and is close to 149,597,900 kilometres ( 92,975,699 miles ) . Time - delay measurements also give a very accurate ...
... astronomical unit has been found to a precision of about 100 kilo- metres ( limited by knowledge of the speed of light ) and is close to 149,597,900 kilometres ( 92,975,699 miles ) . Time - delay measurements also give a very accurate ...
Page 254
... astronomical instruments existing today , both dishes and interferometers . To measure angular diameters much less than 1 " of arc - e.g . , for hydroxyl ( OH ) emission sources and quasars requires interferometry with base lines of ...
... astronomical instruments existing today , both dishes and interferometers . To measure angular diameters much less than 1 " of arc - e.g . , for hydroxyl ( OH ) emission sources and quasars requires interferometry with base lines of ...
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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