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Related Concept Videos

Temperature Measurement Sites01:14

Temperature Measurement Sites

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...
Thermosensation01:43

Thermosensation

Peripheral thermosensation is the perception of external temperature. A change in temperature (on the surface of the skin and other tissues) is detected by a family of temperature-sensitive ion channels called Transient Receptor Potential, or TRP, receptors. These receptors are located on free nerve endings. Those detecting cold temperatures are closer to the surface of the skin than the nerve endings detecting warmth. These thermoTRP channels, while temperature selective, have relatively...
Assessing Body Temperature - Temporal Artery01:19

Assessing Body Temperature - Temporal Artery

Here is a stepwise guide to assessing the body temperature at the temporal artery using a temporal artery thermometer
Step 1: Perform hand hygiene and don a fresh pair of gloves to prevent cross-infection and ensure patient safety.
Step 2: Explain the procedure to the patient to establish trust. Clear communication establishes trust with the patient, ensures they understand what to expect, promotes cooperation, and enhances comfort during the procedure.  
Step 3: Assess the patient's forehead...
Equipments Used to Measure Body Temperature01:13

Equipments Used to Measure Body Temperature

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,...

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Related Experiment Video

Updated: Jun 20, 2026

A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response
09:03

A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response

Published on: January 7, 2019

Sensitive, high-speed thermometry using optical fibers.

G S Maurer, J H Cole, J A Bucaro

    Optics Letters
    |August 29, 2009
    PubMed
    Summary
    This summary is machine-generated.

    This study demonstrates highly sensitive, high-speed thermometry using aluminum-jacketed optical fibers. These fibers achieve a minimum detectable temperature variation of 1 microKelvin at 4 kHz, significantly outperforming current systems.

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    A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response
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    Published on: November 7, 2016

    Fabrication and Testing of Photonic Thermometers
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    Published on: October 24, 2018

    Area of Science:

    • Physics
    • Materials Science
    • Optical Engineering

    Background:

    • Accurate and rapid temperature measurements are crucial in various scientific and industrial applications.
    • Existing thermometry systems often lack the required sensitivity or frequency response for demanding applications.

    Purpose of the Study:

    • To demonstrate the efficacy of aluminum-jacketed optical fibers for sensitive, high-speed thermometry.
    • To characterize the thermal response and sensitivity of these novel optical fibers.

    Main Methods:

    • Utilizing aluminum-jacketed optical fibers for thermal sensing.
    • Measuring fiber sensitivity to thermal variations across a range of frequencies (up to 30 kHz).
    • Analyzing the thermal response between 5 Hz and 4 kHz and comparing it with theoretical models.

    Main Results:

    • Observed sensitivity to thermal variations up to 30 kHz.
    • Achieved a minimum detectable temperature variation of 1 microKelvin (µK) at 4 kHz for a 1-cm fiber length.
    • Demonstrated reasonable agreement between experimental results and analytic predictions for frequencies between 5 Hz and 4 kHz.

    Conclusions:

    • Aluminum-jacketed optical fibers offer a significant advancement in thermometry.
    • This technology provides orders-of-magnitude improvement in sensitivity and frequency response compared to commercial systems.
    • The developed fiber optic sensor shows great potential for high-performance temperature measurement applications.