An hypothesized energy field demonstrated by N. Zwaan,
Dutch delegate to the International Spiritualist Federation
Congress in London in 1948. The Zwaan Rays were supposed
to be capable of stimulating the psychic senses into activity.
Subsequently the Spirit Electronic Communication Society was
founded in Manchester, England, on September 10, 1949, and
an apparatus was developed that claimed to improve the Zwaan
effect. (See also Ashkir-Jobson Trianion)
Dyne, Mark. Electronic Communication for the Spiritual Emancipation
of the People. Rev. ed., Manchester, England The Spirit
Electronic Communication Society, 1954.