The New Encyclopaedia Britannica: -[30] Macropaedia: knowledge in depthEncyclopaedia Britannica, 1974 - Encyclopedias and dictionaries |
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Page 50
... material or medium , which produces an almost instanta- neous rise in pressure behind its advancing front . Ahead of this pressure rise , the medium is not yet affected in any way ; behind it the medium is immediately compressed with a ...
... material or medium , which produces an almost instanta- neous rise in pressure behind its advancing front . Ahead of this pressure rise , the medium is not yet affected in any way ; behind it the medium is immediately compressed with a ...
Page 255
... material near geologic fault planes sloping with the pit must be carefully excavated . The industrial use of mined material determines some mining procedures . Concentration of low grade metallic ores requires that dilution be minimized ...
... material near geologic fault planes sloping with the pit must be carefully excavated . The industrial use of mined material determines some mining procedures . Concentration of low grade metallic ores requires that dilution be minimized ...
Page 931
... material and can be seen as dark nebulae only when concentrated in dense clouds . On the average , the galactic material absorbs half of the light in a distance of about 3,000 light - years . The dark nebulae are neutral and cold ...
... material and can be seen as dark nebulae only when concentrated in dense clouds . On the average , the galactic material absorbs half of the light in a distance of about 3,000 light - years . The dark nebulae are neutral and cold ...
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19th century Africa agricultural American animals atoms beam body carbon carbonaceous chondrites centimetres central centre century chemical chondrites church colour common court crater crystal cultural deposits Descartes early Earth economic electron Europe example existence experience facies feldspar France gastropods impact craters important Indian industry iron kilometres known labour Lake land lens lenses major material ment mental metamorphic metamorphic rocks metaphysics meteor meteorite meteoroids methods metres Mexican Mexico Mexico City Mi Fei mica Michelangelo microscope migration miles military mimicry mind minerals mining minority group miracles Mississippi Mithra modern dance Moldavia molecular molecules Molière movement nature objects occur olivine organisms pattern percent person philosopher physical plagioclase political population pressure produced region result river rock Roman social society South species structure surface temperature theory tion trans ture types United