Pea soup fog
From The Art and Popular Culture Encyclopedia
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Pea soup, or a pea souper, also known as a black fog, killer fog or smog is a very thick and often yellowish, greenish, or blackish fog caused by air pollution that contains soot particulates and the poisonous gas sulphur dioxide. This very thick smog occurs in cities and is derived from the smoke given off by the burning of soft coal for home heating and in industrial processes. Smog of this intensity is often lethal to vulnerable people such as the elderly, the very young and those with respiratory problems. The result of these phenomena was commonly known as a London particular or London fog, which then, in a reversal of the idiom, became the name for a thick pea and ham soup.
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See also
- Great Smog
- Fog Investigation and Dispersal Operation (FIDO) – an aircraft landing aid intended to allow safe flying during the extremes of 'Pea souper' fog
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