Century Dictionary and Cyclopedia
- n. An instrument or a device for indicating variations in temperature without measuring their amount. The name was first applied by Count Rumford to an instrument invented by him, resembling the differential thermometer of Leslie. Out of an indefinite number of thermoscopes, a class of chromatic thermoscopes may be mentioned in which changes in temperature are indicated by changes in the shade or the color of a substance coated with certain chemical preparations. These have been used to some extent for indicating a rise in temperature caused by the heating of a journal in machinery. Thermoscopes consisting of a tube containing air or mercury, and having an adjustable scale, or a scale limited to a few degrees, are used in machines for testing lubricants, in appliances for physical research, as in Osborne's esthermoscope, and in diagnosis, as in Dr. Seguin's thermoscope for detecting minute variations in the temperature of the body.
GNU Webster's 1913
- n. (Physics) An instrument for indicating changes of temperature without indicating the degree of heat by which it is affected; especially, an instrument contrived by Count Rumford which, as modified by Professor Leslie, was afterward called the
- thermo- + -scope (Wiktionary)
“The invention of the thermometer--originally called the thermoscope--is attributed to a number of people, including Galileo, the famous astronomer and physicist (1564 -1642), Santorio Santorio, an Italian physician (1561-1636), and Ferdinand II, the Grand Duke of Tuscany (1610 - 1670), who, in 1654, used alcohol as the medium.”
“To turn a modern thermometer into a thermoscope we need only remove the figures from its scale.”
“The birth of the method of pointer-reading is marked by Galileo's construction of the first thermometer (actually, a thermoscope).”
“Observations of this kind, made by means of the thermoscope, created an ardent desire for the transformation of this apparatus into a thermometer, by the aid of a definite graduation so arranged that everywhere instruments could be made which would be comparable with one another.”
“The use of the dilatation of a fluid for showing the changes of temperature was already known to Galileo, but it is uncertain whether the thermoscope was invented by Galileo or by some one of the numerous physicists to whom the priority is attributed, among these being Santorio, called”
“The 'micro-tasimeter,' a delicate thermoscope, was constructed in 1878, and is the outcome of Edison's experiments with the carbon button.”
“Galvani first stimulated the nervous fiber by the accidental contact of two heterogeneous metals, his contemporaries could never have anticipated that the action of the voltaic pile would discover to us, in the alkalies, metals of a silvery luster, so light as to swim on water, and eminently inflammable; or that it would become a powerful instrument of chemical analysis, and at the same time a thermoscope and a magnet.”
“Wallis, I., and I. Beale, 1669: Some observations concerning the baroscope and thermoscope, made and communicated by Doctor I. Wallis at”
“The history of Galileo thermometer goes back to the 1600's when this glass Galileo thermometer was created and based on a thermoscope invented by Galileo Galilei.”
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