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Mercer University, in Macon, Georgia, was the institutional affiliation of Palmer H. Craig, who headed its physics department. Craig's laboratory at Macon was one of the two sites where Harry F. Breckel tested the Hall-effect device in 1927, with Craig supervising.
Palmer H. Craig, University of Cincinnati.
Source illustrations for The bismuth battery. Captions identify the document and evidence type.
Palmer H. Craig was an American physicist, head of the physics department at Mercer University in Macon, Georgia, and the claimant behind a 1920s bismuth-based "Hall Effect Device" promoted as a replacement for vacuum tubes and batteries in radio receivers.
The University of Cincinnati is the institution where Palmer H. Craig received his Ph.D. in June 1926. His doctoral thesis was "The Hall effect with low magnetic fields" (8 pages; DP15709), the academic root of the work later published in Physical Review and patented as US1822129 — System & Apparatus Employing the Hall Effect .
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Trace the proposed conversion mechanism and its documentary gaps.
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A crystalline material and an extraordinary amplification claim.
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Trace the atmospheric electricity story back to its documents.
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