Tides at War: Prediction Machines, 1914–1945
How two world wars turned brass predictors into strategic assets: round-the-clock cranking, amphibious landings, and the tables that moved armies.
History
Ninety years of brass computation, told as it happened. This bench covers the full arc from Kelvin’s 1872 prototype through the American giants, the wartime production surge, and the quiet digital handover of 1960–1968. If you read one shelf first, make it the history pillar, then follow the timeline into the machines themselves. Harbour masters, naval planners, and observatory directors all appear as the demand for predictions reshapes the instruments — technology driven by need, in dated order. A full timeline figure anchors the story on the history pillar page, the losses ledger tallies every machine built and lost, and the diagram gallery collects the mechanism sketches for close study. Wartime demand and peacetime curiosity each get their due here.
Why the Machines Died: Digital Computers, 1960–1968
The quiet obituary of brass prediction: how stored-program computers beat gears on speed, cost, and flexibility between 1960 and 1968.
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