Some readily observable phenomena have suggested a connection
between psychic abilities and magnetism. The medium
Henry Slade could influence the movements of a magnetic
needle. Johann Zöllner made convincing experiments with a
glass-covered compass. Slade could also magnetize steel knitting
needles, and Zöllner lifted iron filings and sewing needles
with their ends. Stanislawa Tomczyk could exert a similar influence
over the compass.
The British psychic researcher and author Stanley de Brath
also reported a case in which a young man deflected the magnetic
needle. He was searched for a concealed iron or a magnet
but nothing was found.
More recently, the controversial psychic Uri Geller has also
demonstrated deflection of a compass needle, while his skeptical
critics also claim that he must have a concealed iron or mag