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Section T T index 341-349 of 589 terms
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torrent—Flow with high velocity and great turbulence.
Torricelli's tube—An early and once universal name for the mercury barometer.
Torricellian vacuum—The “vacuum” above the column in a mercury barometer.
Torrid Zone—The zone of the earth's surface that lies between the Tropic of Cancer and the Tropic of Capricorn. This is one of the three subdivisions of the mathematical climate; the other two are the Temperate Zone and the Frigid Zone.
torsion hygrometer—A hygrometer in which the rotation of the hygrometric element is a function of the humidity. Such hygrometers are constructed by taking a substance in which length is a function of the humidity and twisting or spiraling it under tension in such a manner that a change in length will cause a further rotation of the element. See hygroscope.
TOS—Abbreviation for TIROS Operational System.
toscà—A southwest wind on Lake Garda in Italy.
total acidity—Amount of both weak and strong acids in water, usually expressed in milliequivalents of a strong base necessary to neutralize one liter of a water sample, using methyl-red or phenolphthalein as an indicator.
total cloud cover—Fraction of the sky hidden by all visible clouds.
total conductivity—In atmospheric electricity, the sum of the electrical conductivities of the positive and negative ions found in a given portion of the atmosphere.
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