The Great Ideas TodayRobert Maynard Hutchins, Mortimer Jerome Adler Encyclopædia Britannica, 1963 |
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Стр. 326
... light , however , such a generator has not been available until recently . All the usual sources of light — such as an electric light bulb , a candle flame or a neon sign - produce waves that have no single precise frequency and that ...
... light , however , such a generator has not been available until recently . All the usual sources of light — such as an electric light bulb , a candle flame or a neon sign - produce waves that have no single precise frequency and that ...
Стр. 345
... light from the sun consists of waves ranging over a continuum of wave numbers , crossed by a large number of lines of darkness , or wave numbers at which the light is very weak . Fraunhofer had also observed that his two dark D lines at ...
... light from the sun consists of waves ranging over a continuum of wave numbers , crossed by a large number of lines of darkness , or wave numbers at which the light is very weak . Fraunhofer had also observed that his two dark D lines at ...
Стр. 347
... light were explained by Albert Einstein ( 1879-1955 ) in 1905 on the supposition that when an atom emits or absorbs light of wave number σ waves / cm , it always emits or absorbs a definite amount of energy , later called one photon ...
... light were explained by Albert Einstein ( 1879-1955 ) in 1905 on the supposition that when an atom emits or absorbs light of wave number σ waves / cm , it always emits or absorbs a definite amount of energy , later called one photon ...
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Adam Smith American analysis animal appear Aristotle Aschenbach atoms Australopithecine beauty called century conquest of space critical culture Death in Venice drug earth effect electrons essay evil existence existentialist experience fact Godwin graft human ideas increase individual kidney kind knowledge labor land laws light live man's mankind maser means of subsistence ment million mind modern Moon moral nations nature observed ontology optical maser orbit Paul Tillich perhaps period philosophical phocomelia physical planets political population possible present Press probably problems produce progress question reason religion revolution rocket satellite scientific scientists seems sense social society solar solar wind space exploration spacecraft species stature Syntopicon Tadzio thalidomide theory things thought tion tradition truth University Venus Villafranchian wave Western World writers York Zinjanthropus