Research > The Polaroid Kirlian Camerai

The Conductivity Imager

***The conductivity imager applies a single high voltage pulse across the two hands of the test subject, with the fingers of one hand placed on photographic film which acts as the dielectric of a capacitor. The fingers and a metal plate act as the two plates of the capacitor. Corona discharge ionization produces light which is recorded on sensitive Polaroid film. As conductivity increases, electrical current through the corona discharge field increases as does the brightness of the resulting image. This device differs from Kirlian photography equipment in three principal ways:

1) The ground electrode applied to the free hand eliminates the variable factors of atmospheric humidity and varying capacitive coupling between the body and electrically conductive elements like the floor and metal furniture.

2) A single, uniform pulse eliminates problems of varying pulse train duration, amplitude, frequency and switch bounce.

3) Reduced voltage combined with ultra high speed (3000 ASA) Polaroid film reduces the problem of shock-induced changes in the subject's electrical conductivity, and reduces variability caused by random high voltage arcing within the circuit.

**The resulting conductivity imager provides a stable and easily reproducible test method. A conductivity imager identical to the ones used in this experiment is available for purchase to those who seek to experiment with Kirlian imaging.

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