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Conforming to the scale used by Gabriel Daniel Fahrenheit in the graduation of his thermometer; of or relating to Fahrenheit's thermometric scale. -- n.

ow or of chemical salts) for producing intense cold. -- Freezing point, that degree of a thermometer at which a fluid begins to freeze; -- applied particularly to water, whose freezing point is at 32º Fahr., and at 0º Centigrade.

f the thermal unit divided by the number expressing the temperature in degrees of the air thermometer, reckoned from its zero of expansion. -- Circular functions. See Inverse trigonometrical functions (below). -- Continuous function, a quantity that has no interruption in the continuity of its real values, as the var…

mark with degrees; to divide into regular steps, grades, or intervals, as the scale of a thermometer, a scheme of punishment or rewards, etc.

A form of hygrometer having wet and dry bulb thermometers, with an adjustable index showing directly the percentage of moisture in the air, etc.

bulbs, the one covered with muslin, the other of black glass, and containing ether and a thermometer. Ether being poured on the muslin, the black ball, cooled by the evaporation of the ether within, is soon covered with dew; at this moment, the inclosed thermometer gives the dew-point, and this, compared with the read…

of water. It consists of a vessel for water, with a lamp for heating it, and an inclosed thermometer for showing the temperature of ebullition.

ng a nation to the maximum of happiness, and the minimum of misery. P. Colquhoun. Maximum thermometer, a thermometer that registers the highest degree of temperature attained in a given time, or since its last adjustment.

To serve as the measure of; as, the thermometer measures changes of temperature.

eavy, opaque, glistening liquid (commonly called quicksilver), and is used in barometers, thermometers, ect. Specific gravity 13.6. Symbol Hg (Hydrargyrum). Atomic weight 199.8. Mercury has a molecule which consists of only one atom. It was named by the alchemists after the god Mercury, and designated by his symbol, me…

atically to a central station atmospheric changes as marked by the anemometer, barometer, thermometer, etc.

ltitude, or the distance of the moon from a star, with a sextant; the temperature, with a thermometer, etc.

An instrument for measuring degrees of heat above those indicated by the mercurial thermometer.

y of heat radiating from a fire, or the cooling influence of bodies. It is a differential thermometer, having one bulb coated with gold or silver leaf. [R.]

Antoine Ferchault de Réaumur; conformed to the scale adopted by Réaumur in graduating the thermometer he invented. -- n.

ording; -- applied to instruments; having an apparatus which registers; as, a registering thermometer. See Recording.

ase of quantity or bulk; to swell; as, a river rises in its bed; the mercury rises in the thermometer.

ate very slight changes of condition; delicacy; as, the sensibility of a balance, or of a thermometer.

g; sensitive; also, readily moved or affected by natural agents; delicate; as, a sensible thermometer. "With affection wondrous sensible." Shak.

ith respect to heat or cold, especially as indicated by the sensation produced, or by the thermometer or pyrometer; degree of heat or cold; as, the temperature of the air; high temperature; low temperature; temperature of freezing or of boiling.