haze

haze, suspension in the atmosphere of minute dust or salt particles that are not individually seen but that nevertheless reduce visibility. So-called damp haze and dry haze produce different optical effects because the particles of each are of different sizes, with the dry haze particles being smaller. Damp haze may develop from dry haze when water condenses on moisture-absorbing dry haze particles. Continuation of this condensation leads to the formation of fog. A hazy condition often occurs in the summer and affects large areas from cities to mountains. Such a haze is often caused by excessive amounts of pollutants resulting from combustion; for example, the Smoky Mountain haze in Tennessee is ascribed to sulfate particles.

The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved.

More on haze from Fact Monster:

  • aureole, in physics - aureole aureole , in physics, luminous circle seen when the sun or other bright light is observed ...
  • Kenneth Duva Burke - Burke, Kenneth Duva Burke, Kenneth Duva, 1897–1993, American critic, b. Pittsburgh, Pa. He ...
  • Laki - Laki Laki , volcano, 2,684 ft (818 m) high, S Iceland, at SW edge of the Vatnajökull glacier. ...
  • REFRACTION - Light rays usually travel in straight lines, but when they pass from one material to another they can be forced to bend (change direction and continue
  • Jimi Hendrix - Biography of Jimi Hendrix, Performer of "Purple Haze"

See more Encyclopedia articles on: Weather and Climate: Terms and Concepts