I was disappointed, because actual Hydraulic RAM does exist https://en.wikipedia.org/wiki/Delay_line_memory (using Wikipedia's own definition of Hydraulics as "involving the mechanical properties and use of liquids").
My thesis advisor - some years ago - worked on one of these systems, CSIRAC, many years earlier when he himself was a student.
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[ 205 ms ] story [ 33.8 ms ] threadMy thesis advisor - some years ago - worked on one of these systems, CSIRAC, many years earlier when he himself was a student.