Definition of Thermameter
Ther*mom"e*ter (th&etilde;r*m&obreve;m"&esl;*t&etilde;r),
n. [Thermo- + -meter: cf. F.
thermomètre. See Thermal.] (Physics) An
instrument for measuring temperature, founded on the principle that changes
of temperature in bodies are accompanied by proportional changes in their
volumes or dimensions.
&fist; The thermometer usually consists of a glass tube of
capillary bore, terminating in a bulb, and containing mercury or alcohol,
which expanding or contracting according to the temperature to which it is
exposed, indicates the degree of heat or cold by the amount of space
occupied, as shown by the position of the top of the liquid column on a
graduated scale. See Centigrade, Fahrenheit, and
Réaumur.
To reduce degrees Fahrenheit to degrees Centigrade, substract
32° and multiply by &frac59;; to reduce degrees Centigrade to degrees
Fahrenheit, multiply by &frac95; and add 32°.
Air thermometer, Balance
thermometer, etc. See under Air, Balance,
etc. -- Metallic thermometer, a form of
thermometer indicating changes of temperature by the expansion or
contraction of rods or strips of metal. -- Register
thermometer, or Self-registering thermometer,
a thermometer that registers the maximum and minimum of temperature
occurring in the interval of time between two consecutive settings of the
instrument. A common form contains a bit of steel wire to be pushed before
the column and left at the point of maximum temperature, or a slide of
enamel, which is drawn back by the liquid, and left within it at the point
of minimum temperature.
Ther*mom"e*ter (th&etilde;r*m&obreve;m"&esl;*t&etilde;r),
n. [Thermo- + -meter: cf. F.
thermomètre. See Thermal.] (Physics) An
instrument for measuring temperature, founded on the principle that changes
of temperature in bodies are accompanied by proportional changes in their
volumes or dimensions.
&fist; The thermometer usually consists of a glass tube of
capillary bore, terminating in a bulb, and containing mercury or alcohol,
which expanding or contracting according to the temperature to which it is
exposed, indicates the degree of heat or cold by the amount of space
occupied, as shown by the position of the top of the liquid column on a
graduated scale. See Centigrade, Fahrenheit, and
Réaumur.
To reduce degrees Fahrenheit to degrees Centigrade, substract
32° and multiply by &frac59;; to reduce degrees Centigrade to degrees
Fahrenheit, multiply by &frac95; and add 32°.
Air thermometer, Balance
thermometer, etc. See under Air, Balance,
etc. -- Metallic thermometer, a form of
thermometer indicating changes of temperature by the expansion or
contraction of rods or strips of metal. -- Register
thermometer, or Self-registering thermometer,
a thermometer that registers the maximum and minimum of temperature
occurring in the interval of time between two consecutive settings of the
instrument. A common form contains a bit of steel wire to be pushed before
the column and left at the point of maximum temperature, or a slide of
enamel, which is drawn back by the liquid, and left within it at the point
of minimum temperature.
- Webster's Unabridged Dictionary (1913)
- an apparatus used to measure temperatures, typically containing mercury or alcohol within a graduated small glass tube
- The Nuttall Encyclopedia
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