air thermometer
- noun
- /ɛr θərˈmɑːmɪtər/
- Specialized
- Unlike a mercury device, an air thermometer responds to the pressure changes of confined gas.
Examples
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An air thermometer is especially useful in experiments requiring stability at constant volume.
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The laboratory used an air thermometer to obtain precise temperature readings.
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The air thermometer showed a temperature of 25 degrees Celsius.
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Where can I find an air thermometer?
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In the lab, the scientists relied on an air thermometer to measure the temperature accurately during their experiments.
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The air thermometer indicated a significant drop in temperature as the gas expanded in the container.
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For this experiment, we will use an air thermometer to ensure that our measurements are consistent and precise.
Synonyms
A tool that tells you how hot or cold something is
A thermometer that measures temperature by the pressure change of a gas in a fixed space
Surface Forms
Morphology
The noun compound is directly compositional: 'air' + 'thermometer' denotes a thermometer that measures the air (i.e., ambient) temperature. The additional technical detail about measuring via gas pressure is specialized but not required for a B1 learner to grasp the basic meaning from the constituents.
Etymology
Air thermometer comes from the simple idea of using trapped air to measure 'temperature'. When the air inside a sealed bulb gets warmer or colder, its pressure changes and the device reads that change, so the name means a thermometer that measures 'temperature' by the air.