Difference between revisions of "Lenard Effect"
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Lenard Effect
</dt>
The separation of electric charges accompanying the aerodynamic
breakup of water drops, first studied systematically by the German
physicist P. Lenard. Also called spray electrification, waterfall
effect. Compare Macky effect.
</dd>
Experiments have shown that the degree of charge separation
in spray processes depends upon the drop temperature, presence
of dissolved impurities, speed of the impinging airblast, and
contact with foreign surfaces. The largest fragments of the broken
drops are observed to carry positive charges and the fine spray
of drops carried off in the impinging air current carries a net
negative charge.
</dd>
References
This article is based on NASA's Dictionary of Technical Terms for Aerospace Use
