The Encyclopedia Americana: A Library of Universal Knowledge ...Encyclopedia Americana Corporation, 1924 |
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Zadetki 1–5 od 100
Stran 11
... leaves little to be desired . Given one such lamp , the intensity of which is known or is arbitrarily taken as the unit , it is possible to determine the voltage at which other lamps have the same intensity , so that it is possible to ...
... leaves little to be desired . Given one such lamp , the intensity of which is known or is arbitrarily taken as the unit , it is possible to determine the voltage at which other lamps have the same intensity , so that it is possible to ...
Stran 17
... leaves of plants . Light cannot produce chemical changes un- less it is absorbed . This rather evident fact was first distinctly recognized by Grotthus in 1819 , and is usually known as " Grotthus ' law , ” but it was also independently ...
... leaves of plants . Light cannot produce chemical changes un- less it is absorbed . This rather evident fact was first distinctly recognized by Grotthus in 1819 , and is usually known as " Grotthus ' law , ” but it was also independently ...
Stran 18
... leaves are carotin ( C40H58 ) and its oxide xanthophyll ( C40H6O2 ) . Carotin is identical with the " lutein " that ... leaf the chlorophyll occurs in the form of con- centrated layers upon ( or near ) the surfaces of certain tiny ...
... leaves are carotin ( C40H58 ) and its oxide xanthophyll ( C40H6O2 ) . Carotin is identical with the " lutein " that ... leaf the chlorophyll occurs in the form of con- centrated layers upon ( or near ) the surfaces of certain tiny ...
Stran 24
... leaves on a stem , three common posi- tions being opposite , alternate and verticillate . See LEAVES . PHYLLOXERA , or VINE - PEST , an American aphist ( Phylloxera vastatrice ) , de- structive to grapevines . It has four forms : sexual , ...
... leaves on a stem , three common posi- tions being opposite , alternate and verticillate . See LEAVES . PHYLLOXERA , or VINE - PEST , an American aphist ( Phylloxera vastatrice ) , de- structive to grapevines . It has four forms : sexual , ...
Stran 25
... leaf form may cling ; by winds which carry the leaf form either with leaves torn from the vines or otherwise ; and through the crawling of the root form through cracks in the earth . Though the insect is an American species , it has ...
... leaf form may cling ; by winds which carry the leaf form either with leaves torn from the vines or otherwise ; and through the crawling of the root form through cracks in the earth . Though the insect is an American species , it has ...
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algæ American animals Asexual reproduction became called carpels cause cells century chief chlorophyll Church coast color consists Consult crystal disease early elected endosperm England English epidermis feet filaments flowers France French fruit fungi gametes gametophyte genus Greek important inches Indian insects island known land large number later leaves light London manufacture ment miles mountain North oogone organ parasites Paris phloem phylum physical physiology pine pipes pistil Pittsburgh plane plants plate platinum poetry Poland polarized Polish political pollen Pompeii Port Port Royal Portland Porto Rico produced Railroad rays River Roman root Russia Saint seeds sepals sexual reproduction soil South species spores sporophyte square miles stamens stems surface tain tion tissues town trees tube United University usually various vegetation vols xylem York zoospores