Thermometer Types
Thermometer Types - Related Videos
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Fabrication and Testing of Photonic Thermometers
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Cited by 1 •
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We describe the process of fabrication and testing of photonic thermometers.
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Thermometers and Temperature Scales
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Any physical property that depends consistently and reproducibly on temperature can be used as the basis of a thermometer. For example, volume increases with temperature for most substances. This property is the basis for the common alcohol thermometer and the original mercury thermometers. Other properties used to measure temperature include electrical resistance, color, and the emission of infrared radiation. As many physical properties depend on temperature, the variety of thermometers is...
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Gas Thermometers and the Kelvin Scale
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2023
The definition of temperature in terms of molecular motion suggests that there should be a lowest possible temperature, where the average kinetic energy of molecules is zero (or the minimum allowed by quantum mechanics). Experiments confirm the existence of such a temperature, called absolute zero. An absolute temperature scale is one whose zero point is absolute zero. Such scales are convenient in science because several physical quantities, such as the volume of an ideal gas, are directly...
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Isolation of Type I and Type II Pericytes from Mouse Skeletal Muscles
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This work describes a FACS-based protocol that allows for easy and simultaneous isolation of type I and type II pericytes from skeletal muscles.
04:34
Mouse Body Temperature Measurement Using Infrared Thermometer During Passive Systemic Anaphylaxis and Food Allergy Evaluation
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Cited by 44 •
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Here we present a new method to accurately measure body temperature differences in passive systemic anaphylaxis (PSA) and food allergy mouse models using an infrared thermometer. This procedure has been accurately duplicated in previous PSA results.
FAQs
Contact designs do not all convert heat into a signal in the same way. Liquid-based instruments rely on expansion, thermistors detect temperature-related changes in electrical resistance, and thermocouples generate a voltage related to temperature difference. These mechanisms determine how the instrument translates thermal equilibrium between the sensor and patient into a clinical reading.
Infrared thermometers estimate temperature from heat radiation emitted by the skin or eardrum, whereas contact instruments depend on thermal equilibrium between a sensor and the patient. Because the measurement principles differ, infrared readings can be more susceptible to environmental or procedural error. Their noncontact operation nevertheless supports rapid, comfortable temperature assessment.
Measurement site influences the balance among reading speed, patient comfort, and susceptibility to error. Oral, rectal, axillary, tympanic, and temporal artery approaches therefore serve as distinct clinical options rather than interchangeable formats. Selecting among them requires attention to the intended assessment and to how the site and design may affect the result.
Selection should reflect whether the reading supports screening, ongoing monitoring, or diagnostic decision-making. Clinicians can weigh the measurement site, desired speed, patient comfort, and vulnerability to environmental or procedural error. Matching the instrument and site to the clinical purpose helps produce information that is more useful for evaluating infection, inflammation, or treatment response.
These designs provide options for obtaining body-temperature readings through different sites and measurement approaches. Digital formats may use a sensor-based contact mechanism, while tympanic and temporal artery formats correspond to infrared assessment of the eardrum or skin. Oral, rectal, and axillary formats identify contact measurement locations, allowing care teams to balance speed, comfort, and error susceptibility.
Temperature readings contribute to assessment of infection and inflammation and can help clinicians monitor response to treatment. Their value depends not only on obtaining a number but also on choosing an appropriate thermometer type and measurement site. In screening, monitoring, and diagnostic decision-making, suitable selection improves the usefulness of the resulting temperature information.