The New Encyclopaedia Britannica, Volume 9Encyclopaedia Britannica, 1985 - Encyclopedias and dictionaries |
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Page 402
... important in semiconductors . In a semiconductor there are a certain num- ber of " free " electrons occupying energy levels in the conduction band and a certain number of positively charged " holes " left in the va- lence band by the ...
... important in semiconductors . In a semiconductor there are a certain num- ber of " free " electrons occupying energy levels in the conduction band and a certain number of positively charged " holes " left in the va- lence band by the ...
Page 498
... important mem- bers of the zooplankton . They are the marine counterparts of insects on land ; on land , as in the sea , the arthropods are the most di- verse and numerous of all animal phyla . The copepod Calanus finmarchicus is important ...
... important mem- bers of the zooplankton . They are the marine counterparts of insects on land ; on land , as in the sea , the arthropods are the most di- verse and numerous of all animal phyla . The copepod Calanus finmarchicus is important ...
Page 499
... important crop pest . The members of the family Miridae , one of the largest heteropteran families ( about 8,000 species ) , are also called leaf bugs . They are brightly coloured and feed mostly on plant sap , causing serious crop ...
... important crop pest . The members of the family Miridae , one of the largest heteropteran families ( about 8,000 species ) , are also called leaf bugs . They are brightly coloured and feed mostly on plant sap , causing serious crop ...
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19th century agricultural American ancient became birds Brazil British called capital centimetres central centre chief China Christian church coast colour culture death developed district dynasty early east eastern elected emperor England English established France French German Greek important Indian industry islands Italian Italy John king known land language later London MACROPAEDIA maize major ment minister modern mountains Museum National northern organized original Otto Ovid Owambo Pacific Pacific Islands painting Pakistan palace Paleocene Palestrina Pāli Panama Paracelsus Paraguay parallax Paraná Paraná River Paris Park Pashtun Paul Peisistratus Pelagius Pentecostal period Pinyin plants poet political Pope port produced province region religious River Roman Rome served southern Spanish species sq km style territory tion town United University village western World World War II writing