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Lightning may be caused by the circulation of warm moisture-filled air through electric fields. [50] Ice or water particles then accumulate charge as in a Van de Graaff generator. [51] As a thundercloud moves over the surface of the Earth, an equal electric charge, but of opposite polarity, is induced on the Earth's surface underneath the cloud ...
Volcanic lightning is an electrical discharge caused by a volcanic eruption rather than from an ordinary thunderstorm. Volcanic lightning arises from colliding, fragmenting particles of volcanic ash (and sometimes ice ), [ 1 ] [ 2 ] which generate static electricity within the volcanic plume , [ 3 ] leading to the name dirty thunderstorm .
Evidence of lightning activity can often be found in the paleomagnetic record. Lightning strikes are the result of tremendous charge buildup in clouds. This excess charge is transferred to the ground via lightning channels, which carry a strong electric current. Because of the intensity of this electric current, when lightning hits the ground ...
Material properties (size, color, texture) of fulgurites vary widely, depending on the size of the lightning bolt and the composition and moisture content of the surface struck by lightning. Most natural fulgurites fall on a spectrum from white to black. Iron is a common impurity that can result in a deep brownish-green coloration.
Reports say that this volcanic eruption could trigger an ice age from the sheet of ash that not even the sun could stand a chance of penetrating. 'High threat' supervolcano could bring about an ...
"And winter lightning is as dangerous as summer lightning." It's not unheard of for lightning to strike in winter. In 1996, two men were struck by lightning during snowstorms in 1996 – one in ...
Heiligenschein or halo effect, partly caused by the opposition effect; Ice blink; Light pillar; Lightning; Mirages (including Fata Morgana) Monochrome Rainbow; Moon dog; Moonbow; Nacreous cloud/Polar stratospheric cloud; Rainbow; Sprite (lightning) Subsun; Sun dog; Tangent arc; Tyndall effect; Upper-atmospheric lightning, including red sprites ...
Sheet lightning is cloud-to-cloud lightning that exhibits a diffuse brightening of the surface of a cloud, caused by the actual discharge path being hidden or too far away. The lightning itself cannot be seen by the spectator, so it appears as only a flash, or a sheet of light. The lightning may be too far away to discern individual flashes.