Art Chladni-like art from the 19th Century

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Margaret Watts Hughes, a Welsh singer and philanthropist, invented the Eidophone in the 1880s, a device that combined sound and visual phenomena to measure vocal power. The Eidophone featured a mouthpiece connected to a diaphragm, allowing her to conduct experiments by singing into it while powders were sprinkled on its surface. This innovative approach enabled her to observe how sound vibrations caused the powders to leap. Additionally, she introduced a time dimension to the acoustic figures by moving a vibrating disc over a wet plate, creating a precise record of each vibration. This work not only showcased the interplay between sound and visual art but also contributed to early explorations in acoustics and sound visualization.
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Welsh singer Margaret Watts Hughes, in the 1880s, invented something like a Chladni pattern generator driven by the human voice.

https://publicdomainreview.org/essay/picturing-a-voice-margaret-watts-hughes-and-the-eidophone/

The Welsh popular singer and philanthropist Margaret (Megan) Watts Hughes (invented) a device almost identical in most respects to the transmitter of Bell's Photophone — one which similarly combined the auditory with optical phenomena. Her "Eidophone", which she had conceived of and produced in order to measure the power of her voice, consisted of a mouthpiece leading to a receiving chamber, over which was stretched a rubber membrane, or diaphragm. Her experiments with this device involved sprinkling a variety of powders onto its surface, then singing into it to see how far these powders would leap. This activity would soon take an unexpected turn...
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She also managed to add a sort of time dimension to the acoustic figures:

The plate and disc [i.e. diaphragm] being both coated as before, the plate is laid upon the table, the wet colour side uppermost. The disc is now reversed, set vibrating, and, while vibrating is moved along the surface of the wet plate. As it glides over the moist surface, while a steady note is sustained, it leaves behind it a register of every vibration, recorded with the strictest accuracy.

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Thread 'Why is the plural for moose not meese?'

The piece came-up from the "Lame Jokes" section of the forum. Someobody carried a step from one of the posts and I became curious and tried a brief web search. A web page gives some justification of sorts why we can use goose(s)-geese(p), but not moose(s)-meese(p). Look for the part of the page headed with "Why isn't "meese" the correct plural?" https://languagetool.org/insights/post/plural-of-moose/
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