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相关概念视频

Equipments Used to Measure Body Temperature01:13

Equipments Used to Measure Body Temperature

1.2K
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,...
1.2K
Temperature Measurement Sites01:14

Temperature Measurement Sites

2.2K
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...
2.2K
IR Spectrometers01:25

IR Spectrometers

1.5K
There are two main infrared (IR) spectrophotometers: dispersive IR spectrometers and Fourier transform infrared (FTIR) spectrometers. In a dispersive IR spectrometer, a beam of infrared radiation produced by a hot wire is divided into two parallel equal-intensity beams using mirrors. One beam passes through the sample, while another is a reference beam. The beams then move through the monochromator, which separates the radiations into a continuous spectrum of different frequencies. The...
1.5K
Assessing Body Temperature - Temporal Artery01:19

Assessing Body Temperature - Temporal Artery

671
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...
671
Thermometers and Temperature Scales01:22

Thermometers and Temperature Scales

6.0K
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...
6.0K
Absorption of Radiation01:05

Absorption of Radiation

820
The rate of heat transfer by emitted radiation is described by the Stefan-Boltzmann law of radiation:
820

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相关实验视频

Updated: Sep 12, 2025

Near-Infrared Temperature Measurement Technique for Water Surrounding an Induction-heated Small Magnetic Sphere
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一种基于颜色温度差异的多光谱温度测量方法.

Jialin Yang1, Lin Yang2, Xiang Wan1

  • 1Institute of Electronic Engineering, China Academy of Engineering Physics, Mianyang, China.

The Review of scientific instruments
|August 6, 2025
PubMed
概括
此摘要是机器生成的。

本研究介绍了一种用于精确测量温度的多光谱温度计技术. 该方法通过利用灰色体假设和颜色温度差异来提高准确度至1%以下,提高了实验效率.

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相关实验视频

Last Updated: Sep 12, 2025

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08:52

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Dual-mode Imaging of Cutaneous Tissue Oxygenation and Vascular Function
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科学领域:

  • 物理 物理学 物理
  • 工程 工程师 工程师 工程师
  • 材料科学 材料科学 材料科学

背景情况:

  • 准确的温度测量对于制造,工业过程和科学研究至关重要.
  • 现有的温度计方法可能受到光谱范围和辐射复杂性的限制.

研究的目的:

  • 开发一种使用灰色体假设和颜色温度差异的多光谱温度计方法.
  • 为了提高测量准确度和温度确定中的实验效率.

主要方法:

  • 使用多光谱温度计测量目标和参考像素的灰色值.
  • 从维恩的位移定律推导出3n个方程,用于n通道温度计.
  • 采用最小正方形适配来确定颜色温度和灰色体辐射率,最大限度地减少偏差以获得准确的温度读数.

主要成果:

  • 达到不到1%的误差的测量精度.
  • 减少所需的光谱通道数量,并简化发射率建模.
  • 通过气体放电温度测量证明有效性,与旋转温度数据进行交叉验证.

结论:

  • 拟议的多光谱温度计方法为准确的温度测量提供了强大而高效的方法.
  • 该技术可用于实际场景,经过实验验证.
  • 该方法克服了传统温度计的局限性,为改进的工业和研究应用铺平了道路.