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Isinglass
Posted: Thu Dec 12, 2024 1:20 pm
by zipcord
while reading online about Mica, the wiki page on diaphragm (acoustics) states: "In a phonograph reproducer, the diaphragm is a flat disk of typically mica or isinglass that converts the mechanical vibration imparted on the buttress from the recorded groove into sound".
Isinglass is a gelatin made from fish
Does anyone know of an instance where these are actually used as a diaphragm?
Re: Isinglass
Posted: Thu Dec 12, 2024 3:14 pm
by JerryVan
zipcord wrote: Thu Dec 12, 2024 1:20 pm
while reading online about Mica, the wiki page on diaphragm (acoustics) states: "In a phonograph reproducer, the diaphragm is a flat disk of typically mica or isinglass that converts the mechanical vibration imparted on the buttress from the recorded groove into sound".
Isinglass is a gelatin made from fish
Does anyone know of an instance where these are actually used as a diaphragm?
That seems like a bit of AI invented history. The "... the buttress from the recorded groove..."????
Re: Isinglass
Posted: Thu Dec 12, 2024 3:54 pm
by mrvic2
After looking it up, apparently isinglass is a word for a type of mica called Muscovite.
(
https://en.m.wikipedia.org/wiki/Muscovite)
Re: Isinglass
Posted: Thu Dec 12, 2024 4:18 pm
by OrthoFan
Curt provides a pretty good explanation of the connection between Isinglass and Mica here --
viewtopic.php?t=19455
Re: Isinglass
Posted: Thu Dec 12, 2024 5:25 pm
by zipcord
thanks for the replies.
so isinglass has more than one definition:
https://www.oed.com/dictionary/isinglass_n?tl=true
Re: Isinglass
Posted: Thu Dec 12, 2024 6:01 pm
by Lah Ca
New Shorter Oxford English Dictionary (older 16 bit digital edition, running in WINE), a bit fuzzy unless you click on the file to enlarge it.:
Same source as your example but a shorter and more focuses entry. Quite simply, isinglass is mica, metaphorically named after mica's resemblance to true isinglass, a product made from fish swimbladders.