The New Encyclopaedia Britannica
Encyclopaedia Britannica, 1974 - Encyclopedias and dictionaries - 934 pages
 Propaedia: outline of knowledge and guide to the Britannica.--- Micropaedia: ready reference and index.--- Macropaedia: knowledge in depth.
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A photochemical system may store light energy from the Sun as chemical energy
and then, only incidentally to the photochemical process, release that energy as
electrical energy. This reaction occurs in the solar battery, used to supply the ...
GENERAL CHARACTERISTICS Importance. Without photosynthesis, the earth's
atmosphere would be devoid of oxygen. All living cells convert food into energy
and structural components necessary for life; if plant photosynthesis were to stop,
yellow-orange colour of carrots) also can absorb light and may supplement or
replace chlorophyll as the light-absorbing molecules in some plant cells; the light
energy absorbed by these pigments, however, must be passed to chlorophyll ...
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This is the 198215th Edition, in two halves, with the Macropaedia and the Micropaedia. First published in 1768, the publisher is the oldest English-language encyclopedia still in print. Two Scottish ... Read full review