Some mechanical and optical curiosities

Here are a couple of clippings from “A Brief History of Optical Synthesis” by Derek Holzer:

A flame-based spectrum analyser - no moving parts:
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Patching analogue data:
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Iannis Xenakis presents an all-drawn music composition system:
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Demo:

This slide deck is one of many interesting contributions to Devine Lu Linvega’s request for examples of “anything relevant to paper computing”.

We also find a link to this, which I’m sure @Maurici_Carbo previously brought to my attention:

Devine’s website also has much of interest:

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Thanks!
Yes!
Ancient Garden Machinery:


and:
Fluidic Computers:
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There’s also this:

https://en.wikipedia.org/wiki/MONIAC

— as featured in Terry Pratchett’s “Making Money”.

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How about The Voder from 1939 …

and

Enjoy,

-Gordon

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