Clothing, Wet-cold and Exposure Duration
Wet clothing and the duration of a person's exposure to wind also affect the felt air temperature. The wind chill formulae do not take account of the variation of clothing worn and how wet or dry a person is. The typical assumption is that a person will be properly dressed and dry. Models generally also assume that thermodynamic equilibrium exists, something that might not be the case if a person quickly run outdoors and back indoors, for example.
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Famous quotes containing the word duration:
“This pond never breaks up so soon as the others in this neighborhood, on account both of its greater depth and its having no stream passing through it to melt or wear away the ice.... It indicates better than any water hereabouts the absolute progress of the season, being least affected by transient changes of temperature. A severe cold of a few days’ duration in March may very much retard the opening of the former ponds, while the temperature of Walden increases almost uninterruptedly.”
—Henry David Thoreau (1817–1862)