Membrane (or pellicle, a thin plate made of some)
Historical document, translated for reference. It reflects medical knowledge of the 1920s–30s and is not medical advice.
Summary
This 1930s encyclopedia article discusses the definition and applications of membranes in acoustics and colloidal chemistry. It describes how membranes are used for sound reproduction, dialysis, and ultrafiltration using natural and artificial materials.
Encyclopedia entry (1928–1936)
MEMBRANE, or pellicle, a thin plate made of some substance. It is used in acoustics for the reproduction of sound vibrations. The presence of natural vibrations in an acoustic membrane distorts the character of the sound. In colloidal chemistry, a membrane is used for dialysis and ultrafiltration. For this purpose, various natural animal or plant membranes (bovine or fish bladder, parchment paper) as well as artificial films made of collodion, gelatin, and other colloidal substances are used (see Dialysis).
Related articles
Cite this page
“Membrane (or pellicle, a thin plate made of some).” Soviet Medical Encyclopedia. English translation of Bolshaya Meditsinskaya Entsiklopediya, 1st ed. (Moscow, 1928–1936), ed. N. A. Semashko. https://sovietmedicalencyclopedia.pages.dev/article/membrane/