thunder


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thunder,

sound produced along a path of a lightning flash, caused by the rapid heating and expansion of the adjacent air; lightning can heat air to temperatures as much as five times hotter than those at the surface of the sun. Rolling thunder occurs either as a result of the time difference between sounds from the far and near end of a flash, or when mountains, layers of air, or other obstructions cause reverberations. Since sound travels about 1 mi in 5 sec, the distance between a lightning flash and an observer may be determined by counting the seconds between the flash and the thunder. Thunder as far distant as 10 to 15 mi (15 to 25 km) from an observer is usually not heard, even though lightning is often seen. See thunderstormthunderstorm,
violent, local atmospheric disturbance accompanied by lightning, thunder, and heavy rain, often by strong gusts of wind, and sometimes by hail. The typical thunderstorm caused by convection occurs when the sun's warmth has heated a large body of moist air near the
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.

What does it mean when you dream about thunder?

Thunder may indicate a loud knocking at the door of the dreamer’s conscious mind to force the dreamer to pay attention and to learn. If accompanied by lightning bolts, inspiration and enlightenment may be indicated.

thunder

[′thən·dər]
(geophysics)
The sound emitted by rapidly expanding gases along the channel of a lightning discharge.

thunder

The loud rumbling caused by lightning. The lightning creates a large amount of heat, which causes air to expand rapidly and violently. These expansion waves travel at supersonic speeds and are heard as thunder.

Thunder

See also Lightning.
Bromius
epithet of Dionysus, meaning ‘thunder.’ [Gk. Myth.: Zimmerman, 43]
Brontes
cruel Cyclops who controls the weather; able to cause great thunder. [Gk. Myth.: Parrinder, 47; Jobes, 241, 400]
Donar
god of thunder; corresponds to Thor. [Ger. Myth.: Leach, 321]
Indra
thunder god and controller of weather. [Vedic Myth.: Leach, 521]
Mjolnir
Thor’s hammer. [Norse Myth.: Brewer Dictionary, 1076]
Thor
god of thunder. [Norse Myth.: Leach, 1109]

thunder

a loud cracking or deep rumbling noise caused by the rapid expansion of atmospheric gases which are suddenly heated by lightning
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