The 3.3 Volt zener diode further enhances this result.
Rhine invented a series of simple cards, originally called Zener cards after the Swiss scientist who created them and now usually referred to as ESP cards, to test psychic abilities in volunteer subjects.
In today's modern world, Zener cards still exist, but computers replace the sender in the typical ESP experiment.
An ESP test online may include electronic images of the traditional Zener cards, or use flash animation to depict random colors, patterns or sounds that the user must guess.
Try the classic Zener card experiment online at the Association for the Scientific Study of Anomalous Phenomena.
Zener Cards are one of the oldest tests for psychic ability, first developed by the J.B.
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