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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Rhabdomeres and outer segments as light guides. The densely packed
membranous structures of photoreceptors have a higher refractive index than the
surrounding substances. The refractive index of the rhabdomere of the blowfly (
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 ...
of light with a wavelength longer than .68/1 by using it in the presence of light
with a shorter wavelength (.58M). The addition of light of shorter wavelength
resulted in oxygen production that exceeded the sum of oxygen produced when
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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