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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...
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,...
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...
Assessing Body Temperature - Rectal01:27

Assessing Body Temperature - Rectal

Rectal temperature measurement is considered the most precise method for assessing core body temperature and typically registers higher than oral temperature. For adults, the rectal thermometer should be inserted 1 to 1.5 inches into the rectum to obtain the most accurate reading.
Follow these steps for rectal temperature assessment:
Step 1: Perform hand hygiene and don clean gloves to prevent cross-infection.
Step 2: Position the patient in a side-lying position to better visualize the rectal...
Assessing Body Temperature - Tympanic membrane01:14

Assessing Body Temperature - Tympanic membrane

Assessing tympanic membrane temperature involves using a tympanic membrane thermometer (TMT). Here is a step-by-step guide:
Step 1: Begin by practicing good hand hygiene to prevent the transmission of microorganisms.
Step 2: Turn on the thermometer and wait until the ready sign appears on the screen to ensure accurate measurement.
Step 3: Slide the probe cover in place to prevent cross-contamination.
Step 4: Instruct the patient to tilt their head to the side for comfort and check for cerumen...
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...

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Related Experiment Video

Updated: Jun 20, 2026

Fiber Optic Distributed Sensors for High-resolution Temperature Field Mapping
09:48

Fiber Optic Distributed Sensors for High-resolution Temperature Field Mapping

Published on: November 7, 2016

High-speed fiber-optic temperature sensor.

F Farahi, J D Jones, D A Jackson

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

    This study investigates the temporal response of a fiber-optic Fabry-Perot interferometer to heat pulses. The fastest response was achieved when a laser beam was focused onto the fiber core, measuring approximately 2.5 microseconds.

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    08:44

    Fabrication and Testing of Photonic Thermometers

    Published on: October 24, 2018

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    A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response
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    Fabrication and Testing of Photonic Thermometers
    08:44

    Fabrication and Testing of Photonic Thermometers

    Published on: October 24, 2018

    Area of Science:

    • Optics and Photonics
    • Fiber Optics
    • Interferometry

    Background:

    • Fiber-optic sensors offer precise measurement capabilities.
    • Fabry-Perot interferometers are sensitive optical devices.
    • High-birefringent (Hi-Bi) fiber enables unique polarization properties.

    Purpose of the Study:

    • To investigate the temporal response of a Hi-Bi fiber-optic Fabry-Perot interferometer to high-frequency heat pulses.
    • To determine the optimal focusing conditions for the fastest temporal response.
    • To provide both theoretical and experimental analysis of the system's dynamic behavior.

    Main Methods:

    • Fabrication of a Fabry-Perot interferometer using cleaved Hi-Bi fiber ends.
    • Generation of high-frequency heat pulses via amplitude-modulated argon laser.
    • Focusing the modulated laser beam onto the fiber interferometer.
    • Theoretical modeling and experimental measurement of the temporal response.

    Main Results:

    • The temporal response of the interferometer to heat pulses was theoretically modeled and experimentally verified.
    • The fastest temporal response was observed when the laser beam was precisely focused onto the fiber core.
    • A rapid time response of approximately 2.5 microseconds was measured.

    Conclusions:

    • The Hi-Bi fiber-optic Fabry-Perot interferometer exhibits a fast temporal response to modulated heat pulses.
    • Focusing the excitation laser onto the fiber core is critical for achieving optimal temporal performance.
    • This system demonstrates potential for high-speed sensing applications in optical systems.