Paranormal equipment 101
In 1972, acoustics engineer Elias Marsh lost his eleven-year-old son to a drowning accident — and spent the next nine years alone in his basement building a machine to reach him again. This episode traces the real history of paranormal equipment, from 1850s Spiritualist talking boards to EVP recorders, spirit boxes, EMF meters, and thermal cameras, unpacking the science of pareidolia, the ideomotor effect, and infrasound-induced dread along the way. Woven through it all: the story of The Threshold, a hand-built spirit box left running in a condemned house for forty years — and what it said…
The skinny
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