Isinglass

[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?

[JerryVan]

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..."????

[mrvic2]

After looking it up, apparently isinglass is a word for a type of mica called Muscovite.

(https://en.m.wikipedia.org/wiki/Muscovite)

[OrthoFan]

Curt provides a pretty good explanation of the connection between Isinglass and Mica here -- viewtopic.php?t=19455

[zipcord]

thanks for the replies.

so isinglass has more than one definition:

https://www.oed.com/dictionary/isinglass_n?tl=true

[Lah Ca]

thanks for the replies.

so isinglass has more than one definition:

https://www.oed.com/dictionary/isinglass_n?tl=true

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.