Found 1 items, similar to Ball lightning.
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Definition: Ball lightning
(l[imac]t"n[i^]ng), n. [For lightening,
fr. lighten to flash.]
1. A discharge of atmospheric electricity, accompanied by a
vivid flash of light, commonly from one cloud to another,
sometimes from a cloud to the earth. The sound produced by
the electricity in passing rapidly through the atmosphere
2. The act of making bright, or the state of being made
bright; enlightenment; brightening, as of the mental
, a rare form of lightning sometimes seen as
a globe of fire moving from the clouds to the earth.
, lightning in angular, zigzag, or forked
, more or less vivid and extensive flashes of
electric light, without thunder, seen near the horizon,
esp. at the close of a hot day.
(Telegraphy), a device, at the place
where a wire enters a building, for preventing injury by
lightning to an operator or instrument. It consists of a
short circuit to the ground interrupted by a thin
nonconductor over which lightning jumps. Called also
(Zo["o]l.), a luminous beetle. See Firefly
, a lightning rod.
, a quick, penetrating glance of a
, a metallic rod set up on a building, or on
the mast of a vessel, and connected with the earth or
water below, for the purpose of protecting the building or
vessel from lightning.
, a diffused glow of electric light flashing
out from the clouds, and illumining their outlines. The
appearance is sometimes due to the reflection of light
from distant flashes of lightning by the nearer clouds.