Thermometer
A device measuring temperature via a sensor and scale.
A thermometer is a device that measures temperature, or the hotness or coldness of an object. It consists of a temperature sensor and a means of converting that change into a numerical value. Thermometers are widely used in technology, industry, meteorology, medicine, and scientific research.
- type
- Measuring instrument
- key_elements
- Temperature sensor and scale or readout
Lore & Background
The first physician to use thermometer measurements clinically was Herman Boerhaave.
Reader's Guide
The thermometer's significance lies in its evolution from a simple thermoscope to a precise instrument with standardized scales, enabling objective temperature measurement across science and daily life. Early thermometers were sensitive to air pressure, but the sealed liquid-in-glass design by Delmedigo and later Medici overcame this. The development of agreed scales, such as Fahrenheit's and Celsius's, allowed comparability between instruments. Despite its ubiquity, the instrument's invention remains a collective achievement of many contributors over centuries.
Did You Know?
- The first physician to use thermometer measurements in clinical practice was Herman Boerhaave.
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