The New Encyclopædia Britannica, Volume 16Encyclopaedia Britannica, 1981 - Encyclopedias and dictionaries |
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Page 77
... frequency of a proton in a magnetic field to the frequency of the proton's orbital , or circular , motion in the same field , called the cyclotron frequency . The first measurement of this ratio was re- ported in 1949 by physicists in ...
... frequency of a proton in a magnetic field to the frequency of the proton's orbital , or circular , motion in the same field , called the cyclotron frequency . The first measurement of this ratio was re- ported in 1949 by physicists in ...
Page 247
... frequency sound 19 : 741f ultrasound , periodic pressure variations or vibrations of the same physical characteristics as sound but with frequencies above the range of human hearing , or beyond about 20,000 vi- brations per second ...
... frequency sound 19 : 741f ultrasound , periodic pressure variations or vibrations of the same physical characteristics as sound but with frequencies above the range of human hearing , or beyond about 20,000 vi- brations per second ...
Page 1128
... frequency ” -i.e . , a frequency to which the individual neuron responds at minimal inten- sity . With each increase in the intensity of the sound stimulus , the neuron is able to respond to a wider band of frequencies , thus reflecting ...
... frequency ” -i.e . , a frequency to which the individual neuron responds at minimal inten- sity . With each increase in the intensity of the sound stimulus , the neuron is able to respond to a wider band of frequencies , thus reflecting ...
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19th century Africa American animals areas became bee-eaters cells centimetres central centre century Church collagen conifers connective tissue conodonts conservation conservatism constitution continental continental drift copper Coraciiformes coral cosmic rays countries court covenant Cretaceous Crete cricket crime criminal Cro-Magnon crocodiles Crusade cultural deposits disease early Earth economic effect energy England Europe federal forest fossil France French function genera geosynclines groups hoopoes hornbills illus important industrial Iráklion island King known land later Le Corbusier legislation major ment metres minerals modern natural North Nyssaceae occur ocean Ordovician organized original Parliament particles party percent period plants political pollution population problems protection reefs region result River rock Roman Saladin sediments social South Soviet species structure theory tion town trade traditional trees tropical trouvères Union United usually western