beckman thermometer
Học thuậtThân thiện
Definition
Noun: A Beckman thermometer is a specialized type of mercury-in-glass thermometer designed for precise measurement of small temperature differences or changes, rather than absolute temperature. It features a large bulb and a fine capillary, often with a scale that covers only a few degrees but can be read with high accuracy.
Usage
The Beckman thermometer is used primarily in scientific laboratories for experiments requiring high-precision temperature measurements, such as calorimetry, determining melting points, or studying reaction kinetics. - The chemist used a Beckman thermometer to measure the minute temperature change during the reaction. - For accurate results in the calorimetry experiment, a Beckman thermometer is essential.
Advanced Usage
- Setting the Range: Before use, the thermometer's range is often set by adjusting the amount of mercury in the bulb and reservoir, allowing it to be used for different temperature intervals.
- The researcher set the Beckman thermometer to cover a 5-degree range centered on room temperature.
Variants and Related Words
- Differential Thermometer: A general term for thermometers that measure temperature differences, of which the Beckman type is a specific, high-precision example.
- Calorimeter: An apparatus often used in conjunction with a Beckman thermometer to measure heat changes.
Synonyms
- Precision thermometer
- Mercury differential thermometer
Related Terms
- Thermometry: The science and practice of temperature measurement.
- Capillary: The very narrow tube in the thermometer through which the mercury moves, enabling precise readings.
Noun
- a mercury thermometer that measures small differences or changes in temperature