The new encyclopædia Britannica: in 30 volumes |
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Page 190
... light by living organisms , is widespread in nature . Among verte- brate animals , only marine fishes have light organs . Light organs ( or photophores ) are encountered in many di- verse groups of fish . These structures apparently ...
... light by living organisms , is widespread in nature . Among verte- brate animals , only marine fishes have light organs . Light organs ( or photophores ) are encountered in many di- verse groups of fish . These structures apparently ...
Page 487
... light rapidly and become self - supporting . Light and seed germination . Many seeds are insensi- tive to light , but in a number of species germination is stimulated or inhibited by exposure to continuous or short periods of ...
... light rapidly and become self - supporting . Light and seed germination . Many seeds are insensi- tive to light , but in a number of species germination is stimulated or inhibited by exposure to continuous or short periods of ...
Page 520
... ( light - activated switch ) A o OK light - activated reverse - blocking diode thyristor LASCR ( light - activated silicon - controlled rectifier ) ᎪᏅ OK light - activated reverse - blocking triode thyristor G alloy - diffused pellet ...
... ( light - activated switch ) A o OK light - activated reverse - blocking diode thyristor LASCR ( light - activated silicon - controlled rectifier ) ᎪᏅ OK light - activated reverse - blocking triode thyristor G alloy - diffused pellet ...
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19th century Africa agriculture American ancient areas army became BIBLIOGRAPHY carpels carpets central centre Christian church communication culture Danish death Denmark dunes early east eastern economic endosperm established Europe European feet Finland fishes flowers forces French fruit genera genus German Iceland important industry Intelsat islands kilometres king land lizards major ment metres miles military Moscow nobility northern Norway organization ovary ovules party peasants percent period petals pitcher pitcher plant plants political population production reforms region reign religion religious republic ritual river Rugby Russian S.F.S.R. Rwanda sacred sacrifice saga sail saints salmoniform salt domes sand sandstones Santalales São Paulo Sarmatians satellite satire Saxifragales sepals ships shrubs social southern Soviet Union species Stalin stamens structure Sweden Swedish taxes territory tion trade traditional trans trees tropical Western