bead lightning

bead lightning
lightning in which the intensity appears to vary along the path and which thus resembles a string of beads. Also called chain lightning, pearl lightning.
[1900-05]

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also called  chain lightning  
 form of lightning of longer duration than more typical lightning that appears as a string of luminous segments instead of a continuous channel. It occurs infrequently but has been observed many times. Its causes are unknown, but among the theories proposed are the following: portions of the lightning channel are slanted toward or away from the observer and thus seem brighter or dimmer; parts of the channel are obscured by rain or clouds; and sections of the channel with large radii cool more slowly than do those with small radii.

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Universalium. 2010.

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  • bead lightning — noun see beaded lightning * * * lightning in which the intensity appears to vary along the path and which thus resembles a string of beads. Also called chain lightning, pearl lightning. [1900 05] * * * bead lightning, = chain lightning (def. 1).… …   Useful english dictionary

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  • Ball lightning — is an atmospheric electrical phenomenon, the physical nature of which is still controversial. The term refers to reports of luminous, usually spherical objects which vary from pea sized to several meters in diameter. It is sometimes associated… …   Wikipedia

  • chain lightning — noun a form of lightning that moves rapidly in a zigzag path with one end divided (fork like) • Syn: ↑forked lightning • Hypernyms: ↑lightning * * * noun : lightning that appears to move very rapidly in a long angular, zigzag, or forked course *… …   Useful english dictionary

  • chain lightning — 1. Chiefly Northeastern and Western U.S. lightning that seems to move very quickly in wavy or zigzag lines. 2. See bead lightning. [1825 35, Amer.] * * * …   Universalium

  • beaded lightning — noun also bead lightning : a streak of lightning that seems to be broken up into short segments …   Useful english dictionary

  • pearl lightning. — See bead lightning. * * * …   Universalium

  • pearl lightning. — See bead lightning …   Useful english dictionary

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