Thunder
Thunder is the sound caused by lightning. Depending on the nature of the lightning and distance of the listener, thunder can range from a sharp, loud crack to a long, low rumble (brontide). The sudden increase in pressure and temperature from lightning produces rapid expansion of the air surrounding and within a bolt of lightning. In turn, this expansion of air creates a sonic shock wave, similar to a sonic boom, which produces the sound of thunder, often referred to as a clap, crack, or peal of thunder. The distance of the lightning can be calculated by the listener based on the time interval from when the lightning is seen to when the sound is heard.
Read more about Thunder.
Famous quotes containing the word thunder:
“O the orator’s joys!
To inflate the chest, to roll the thunder of the voice out from the ribs and throat,
To make the people rage, weep, hate, desire, with yourself,
To lead America—to quell America with a great tongue.”
—Walt Whitman (1819–1892)
“Small, black, as flies hanging in heat, the Boys,
Until the distance throws them forth, their hum
Bulges to thunder held by calf and thigh.”
—Thom Gunn (b. 1929)