Temperature Measurement Methods
Temperature Measurement Methods - Related Videos
10:36
Advanced Experimental Methods for Low-temperature Magnetotransport Measurement of Novel Materials
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Cited by 2 •
2016
We describe the methodology of mechanical exfoliation and deposition of flakes of novel materials with micron-sized dimensions onto substrate, fabrication of experimental device structures for transport experimentation, and the magnetotransport measurement in a dry helium close-cycle cryostat at temperatures down to 0.300 K and magnetic fields up to 12 T.
01:14
Temperature Measurement Sites
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2024
A thermometer measures body temperature. The common sites for measuring body temperature are the oral cavity, axillary region, temporal artery, and skin surface, such as the forehead, abdomen, and axilla. True core body temperature is assessed in the rectum, tympanic membrane, pulmonary artery, esophagus, and urinary bladder. Oral: When assessing oral temperature, the thermometer tip should be placed under the tongue in the posterior sublingual pocket. It offers accurate readings and can be...
03:58
Temperature Gradient Assay: A Method to Test Temperature Preference in Drosophila Larvae
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2023
Drosophila fruit flies can distinguish small changes in temperature and therefore select environments with favorable thermal conditions. This video describes a behavioral assay that tests the temperature preference of Drosophila larvae on a linear thermal gradient.
09:50
Measuring the Densities of Aqueous Glasses at Cryogenic Temperatures
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Cited by 4 •
2017
A protocol for determining the vitreous phase densities of micro- to pico-liter size drops of aqueous mixtures at cryogenic temperatures is described.
01:13
Equipments Used to Measure Body Temperature
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2024
Body temperature can be assessed using various devices and measured in Celsius or Fahrenheit. Glass-bulb Thermometer: Glass-bulb thermometers are hollow glass tubes with a bulb tip containing liquid such as ethanol or mercury. Historically, glass bulb mercury thermometers were the standard device to measure body temperature. Today, mercury thermometers are prohibited in many countries due to the hazardous effects of mercury and the risk of exposure if the glass bulb breaks. In general,...
FAQs
Each approach converts temperature changes into a signal that can be interpreted using a calibration relationship. In a liquid thermometer, thermal expansion changes the observed liquid level, whereas an electronic sensor may track electrical resistance or thermoelectric voltage. The selected physical property determines how the instrument responds and what comparison with a reference is needed for reliable readings.
Liquid-based measurements rely on visible thermal expansion, while electronic approaches detect changes in electrical resistance or thermoelectric voltage. These mechanisms provide different response characteristics and practical measurement options. Comparing them helps chemists match the sensing principle to the experiment, particularly when sample conditions, temperature range, response time, or precision make one approach more suitable than another.
Selection depends on the required temperature range, response time, sample properties, and precision. A method that provides adequate accuracy for routine monitoring may not meet the needs of a sensitive phase-transition study. Considering these variables before measurement helps prevent unsuitable readings and supports better control of reactions, calorimetry experiments, and temperature-sensitive chemical handling.
Calibration compares an instrument's readings with known reference points and establishes how its measured property corresponds to temperature. This step is important because the instrument does not directly report temperature in the same way across all sensing principles. Calibrated readings give chemists greater confidence when interpreting reaction behavior, comparing experiments, or controlling a chemical process.
During reaction monitoring, temperature readings help reveal and control thermal changes that can affect experimental behavior. In calorimetry, reliable measurements support interpretation of heat-related changes in a system. The measurement method must therefore provide readings suited to the experiment's precision and response-time requirements, allowing observed temperature changes to be connected more confidently with chemical results.
Phase-transition studies depend on dependable temperature readings to identify and interpret changes in a material as conditions vary. In process control, measurements help maintain chemical operations within intended temperature conditions. The same reliability is important for safely handling temperature-sensitive chemicals, because inaccurate or poorly matched measurements can compromise interpretation, control, or safe experimental practice.