THERMAL

Thermal

A thermal column is a column of rising air in the lower altitudes of the Earth's atmosphere. Thermals are created by the uneven heating of the Earth's surface from solar radiation, and are an example of convection, specifically atmospheric convection. The Sun warms the ground, which in turn warms the air directly above it. Dark earth, urban areas and roadways are good sources of thermals.

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thermal

Noun

  1. A column of rising air in the lower atmosphere created by uneven heating of Earth's surface.

Adjective

  1. Pertaining to heat or temperature.
  2. Providing efficient insulation so as to keep the body warm.


The above text is a snippet from Wiktionary: thermal
and as such is available under the Creative Commons Attribution/Share-Alike License.

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