The Great Ideas TodayRobert Maynard Hutchins, Mortimer Jerome Adler Encyclopædia Britannica, 1963 |
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Стр. 328
... atoms which are stimulated to emit and by the way in which those atoms are excited . The first maser amplifier was the ammonia maser , built in 1954 ; it operated at a microwave frequency , at which alternative means for generating ...
... atoms which are stimulated to emit and by the way in which those atoms are excited . The first maser amplifier was the ammonia maser , built in 1954 ; it operated at a microwave frequency , at which alternative means for generating ...
Стр. 348
... atom , which includes the mass of Z electrons , each of mass m . The chemical properties depend almost entirely on Z and very little on M. It is now known that the atoms of the same element are often a mixture of different isotopes ...
... atom , which includes the mass of Z electrons , each of mass m . The chemical properties depend almost entirely on Z and very little on M. It is now known that the atoms of the same element are often a mixture of different isotopes ...
Стр. 350
... atoms to the first excited state . And when they do just that , the atom can only radiate one spectrum line corresponding to a jump in which the atom returns to the lowest state . As the energy of the impacting electron is gradually ...
... atoms to the first excited state . And when they do just that , the atom can only radiate one spectrum line corresponding to a jump in which the atom returns to the lowest state . As the energy of the impacting electron is gradually ...
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Adam Smith American analysis animal appear Aristotle Aschenbach atoms Australopithecine beauty 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 language 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 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