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Related Concept Videos

Atomic Spectroscopy: Effects of Temperature01:27

Atomic Spectroscopy: Effects of Temperature

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Atomization, converting samples into gas-phase atoms and ions, is essential for atomic spectroscopy. The flame temperature required for atomization affects the efficiency of the atomic spectroscopic methods by increasing the atomization efficiency and the relative population of the excited and ground states.
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Temperature Measurement Sites01:14

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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.
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Flame photometry, also known as flame emission spectrometry, is a technique used for the qualitative and quantitative analysis of elements present in a sample using a flame as the source of excitation energy. The concept of flame photometry was realized in the early 1860s by Kirchhoff and Bunsen, who discovered that specific elements emit characteristic radiation when excited in flames. The first instrument developed for this purpose was used to measure sodium (Na) in plant ash using a Bunsen...
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Thermosensation01:43

Thermosensation

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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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Here is a stepwise guide to assessing the body temperature at the temporal artery using a temporal artery thermometer
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High-resolution Thermal Micro-imaging Using Europium Chelate Luminescent Coatings
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4D temperature measurements using tomographic two-color pyrometry.

Tao Yu, Florian J Bauer, Franz J Huber

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    Summary
    This summary is machine-generated.

    This study introduces a novel high-speed 4D thermometry technique using two cameras and tomographic two-color pyrometry. This method enables detailed temperature mapping for combustion analysis.

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    Area of Science:

    • * Combustion diagnostics
    • * Optical thermometry
    • * Fluid dynamics

    Background:

    • * Accurate temperature measurement is crucial for understanding combustion processes.
    • * High-speed, multi-dimensional temperature mapping presents significant challenges.

    Purpose of the Study:

    • * To develop and validate a new high-speed four-dimensional (3D + time) thermometry technique.
    • * To enable detailed temperature field analysis in turbulent combustion.

    Main Methods:

    • * Utilized two high-speed cameras with different bandpass filters to capture thermal radiation.
    • * Employed a customized fiber bundle and beam splitter for nine projections per band.
    • * Applied tomographic two-color pyrometry for temperature distribution evaluation.

    Main Results:

    • * Successfully evaluated the 3D temperature distribution of a premixed steady flat flame.
    • * Observed 3D temperature evolution of a weakly turbulent diffusion flame at 7.5 kHz.
    • * Validated results against inverse Abel transform and line-of-sight data.

    Conclusions:

    • * The developed 4D thermometry method is effective for high-speed temperature measurements.
    • * This technique provides valuable insights into turbulent combustion mechanisms.
    • * Applicable to understanding combustion in practical devices.