Definition of "zero point" []

• The location of the center of a burst of a nuclear weapon at the instant of detonation. The zero point may be in the air, or on or beneath the surface of land or water, depending upon the type of burst, and it is thus to be distinguished from ground zero. (noun)

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• "Even if the medium is not reading his granddaughter’s mind, she might be obtaining the information from other sources, including what some scientists speculate might be the so-called zero point field mentioned earlier."