History

The Hieronymus Machine

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America's only patented psychic machine: a 1949 radionics detector that was supposed to sense 'eloptic energy' from any material, and that its most famous champion claimed worked just as well as a drawing of itself.
Documented

Documented

Hieronymus received US patent 2,482,773 in 1949 for a device to detect 'emanations from materials,' having submitted working models and live experiments. Campbell built replicas in the 1950s, reported the machine functioned without power, then built his 'symbolic' version from a paper schematic with nylon thread connections, and claimed equivalent performance. He described it in a June 4, 1956 letter to Hieronymus: magic depends on form, on pattern rather than substance.

Assessment: The patent, the correspondence, and the Astounding editorials are all on record; mainstream science classifies the device as pseudoscience.
Stories

Stories

Hieronymus spent decades insisting his eloptic energy was a physical phenomenon, and complained that Campbell set acceptance of his work back a hundred years by framing it as mind-powered magic. Isaac Asimov, shown the machine at Campbell's home, later called it an example of how great nonsense discoveries are made.

Assessment: The falling-out between inventor and champion is documented in Hieronymus's own autobiography and Asimov's recollections.
Interesting claims

Interesting claims

Psionics practitioners take the symbolic-machine result as evidence that the operator, not the electronics, does the work, with the device as a focusing interface. Skeptics reply that this is a confession: a machine that works identically as hardware, unplugged, or as ink is measuring the user.

Assessment: Both readings agree on the reported facts; they diverge entirely on what the facts mean.
Sources and further reading
  1. US Patent 2,482,773, Detection of Emanations from Materials and Measurement of the Volumes Thereof (1949)
  2. Campbell-Hieronymus correspondence, letter of June 4, 1956, on the symbolic machine
  3. Hieronymus, The Story of Eloptic Energy (autobiography); Asimov, In Joy Still Felt (recollection)
Worth asking

If the schematic performs as well as the circuit, was the machine ever the machine, and what does that imply about every other instrument an operator believes in?

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GR8YFILES · competing origin stories, labeled by the strength of their evidence · readers 14+