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
References in classic literature ?
I think most men would have done as I did, at so heavy and so sudden a clap of thunder, and so very near too," said Charles, striving to conceal the uneasiness he felt.
At this moment there was a tremendous clap of thunder, accompanied by a flash of lightning so vivid, that it quite eclipsed the light of the lamp.
At the same moment, and in the midst of the terrifying silence which usually follows a clap of thunder, they heard a knocking at the door.
The smooth-worn pavement, dusty with footsteps, still called upon the lofty walls to reiterate the shuffle and the tread of feet unceasingly, save when the closing of some heavy door resounded through the building like a clap of thunder, and drowned all other noises in its rolling sound.
The darkness returned with a single clap of thunder, like a gun fired for a warning of his escape from the prison of lies.
The deep interest taken in this conversation by the company had made them unconscious of the uproar abroad among the elements, when suddenly they were electrified by a tremendous clap of thunder.
At the same time it happened, after I had laid my scheme for the setting up my tent, and making the cave, that a storm of rain falling from a thick, dark cloud, a sudden flash of lightning happened, and after that a great clap of thunder, as is naturally the effect of it.
And with that sickening sound came the loudest clap of thunder yet, and a great white glare that showed us our enemy's body far below, with one white hand spread like a starfish, but the head of him mercifully twisted underneath.
The tale was told of old Brouwer, a most heretical disbeliever in ghosts, how he met the Horseman returning from his foray into Sleepy Hollow, and was obliged to get up behind him; how they galloped over bush and brake, over hill and swamp, until they reached the bridge; when the Horseman suddenly turned into a skeleton, threw old Brouwer into the brook, and sprang away over the tree-tops with a clap of thunder.
The woman whose garden the coach crashed into, Terri Peachey, said: "It just sounded like a clap of thunder.
It was an absolutely horrendous thunderstorm and started with an enormous clap of thunder.
In Anthony and Cleopatra, just as Cleopatra was about to die, there was a huge clap of thunder.