Lord Kelvin and His Analog Computer.
This tide-predicting machine was one of many advances he made to maritime tech
By ALLISON MARSH via @IEEE Spectrum
https://spectrum.ieee.org/tide-predictions?fbclid=IwZXh0bgNhZW0CMTEAAR2I_us0NK-bASzwljm-t5TcL7tuEEOV0n352IBKGBoXE1fq_VLPXVHGNdQ_aem_Oai-M-SOVTBX-Hts68i-BQ
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