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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It relies on a silver halide negative material with a special processing procedure
to produce positives in one stage. The process was initially used in office copying
systems, and it is still in use in such systems. Land's In 1947 Edwin Land, a U.S. ...
The diffusion-transfer process, the basis of the Polaroid system, was invented
almost simultaneously in 1939 in Belgium and Germany. It relies on a silver
halide negative material with a special processing procedure to produce
positives in ...
molecular weight, of the material under consideration. Extensive experiments
with many polymers have shown that for each polymer there exists a certain
critical molecular weight below which the material shows only poor mechanical
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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