Non-thermal Effects of Microwave Radiation on Birds

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Abstract

MICROWAVE radiation produces both thermal and non-thermal effects in biological systems1,2. The thermal effect is manifested as a rise in temperature of the irradiated system and is accompanied by physiological responses depending on the intensity and duration of the field. Non-thermal effects are manifested as changes in cellular metabolism caused by both resonance absorption and induced EMFs and, when neural structures are involved, are often accompanied by a specific behavioural response. An important difference between thermal and non-thermal effects is in the matter of time scale. Chickens exposed to a “slightly thermal” microwave field (20–50 mW/cm2) respond with an escape or avoidance reaction within a few seconds of the onset of radiation3.

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References

  1. 1

    Olsen, C. M., Drake, C. L., and Bunch, S. L., J. Microwave Power, 1 (1966).

  2. 2

    Soviet Research on Neural Effects of Microwaves, Aerospace Tech. Divn., Lib. of Congress, ATD Rep. 66–133.

  3. 3

    Tanner, J. A., Nature, 210, 636 (1966).

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