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相关概念视频

Measurement of Fluid Pressure01:16

Measurement of Fluid Pressure

233
Fluid pressure is commonly measured using devices called manometers, which rely on liquid columns to indicate pressure differences. The height of a liquid column in a manometer reflects the pressure exerted by the fluid, providing a simple yet effective means of measurement. Different types of manometers serve specific purposes based on their configurations and the type of fluids involved.
A basic form of manometer is the piezometer, a vertical tube open at the top and filled with the same...
233
Static, Stagnation, Dynamic and Total Pressure01:24

Static, Stagnation, Dynamic and Total Pressure

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The concept of static, stagnation, dynamic, and total pressure is fundamental in fluid dynamics, often explained using Bernoulli's equation:
434
Fluid Pressure over Flat Plate of Constant Width01:05

Fluid Pressure over Flat Plate of Constant Width

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When a body is submerged in water, it experiences fluid pressure acting normal on its surface and distributed over its area. For better design structures, it is crucial to determine the magnitude and location of the resultant force acting on the surface. In the case of a rectangular plate of constant width submerged in water, the pressure increases with depth, resulting in a linearly varying trapezoidal pressure distribution from the upper to the lower edge of the plate.
The resultant force...
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Pressure Variation in a Fluid at Rest01:11

Pressure Variation in a Fluid at Rest

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In a fluid at rest, the pressure at any point beneath the fluid surface depends solely on the depth, not on the container's shape or size. This principle, known as hydrostatic pressure, arises because, in stationary fluids, there is no acceleration, meaning the forces within the fluid balance out. Only vertical forces, caused by the weight of the fluid above, contribute to pressure changes with depth.
When measuring pressure at two different levels within the fluid, the difference in...
295
Fluid Pressure over Flat Plate of Variable Width01:02

Fluid Pressure over Flat Plate of Variable Width

1.8K
When a flat plate is submerged in a fluid, the fluid exerts pressure on the plate. This pressure can lead to many different phenomena, including drag and buoyancy. To understand the behavior of the fluid over a flat plate of variable width, it is essential to analyze the distribution of the pressure exerted.
The pressure distribution on the plate can be calculated by determining the force that acts on a differential area strip of the plate. Thus, the magnitude of the force is equal to the...
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相关实验视频

Updated: Jul 20, 2025

Author Spotlight: Fabrication of a Low-Cost, Fiber-Coupled, and Air-Spaced Fabry-Pérot Etalon
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用于测量非常低静态压力测量的法布里-佩罗干扰仪

Sergio Calixto1, Roberto Zitzumbo2, Zacarías Malacara Hernandez1

  • 1Centro de Investigaciones en Óptica, Loma del Bosque 115, Leon 37150, Mexico.

Sensors (Basel, Switzerland)
|July 29, 2023
PubMed
概括

这项研究调整了Fabry-Perot干扰仪来测量低压. 该仪器通过观察膜引起的干扰边缘的变化来检测压力变化.

关键词:
织物佩罗特干扰仪 干扰仪具有高灵敏度的高灵敏度这是一个光学传感器.物理传感器 物理传感器聚二甲基西洛二氧化.压力传感器压力传感器传感器设备 传感器设备 传感器设备非常低压测量非常低压测量

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相关实验视频

Last Updated: Jul 20, 2025

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科学领域:

  • 光学物理学 光学物理学
  • 计量学 计量学 计量学
  • 仪器化 仪器化 仪器化

背景情况:

  • 精确测量低压在各种科学和工业应用中至关重要.
  • 传统的压力传感器可能对非常低的压力有敏感度或范围的限制.

研究的目的:

  • 适应和使用法布里-佩罗干扰仪来精确测量非常低的压力.
  • 为了证明使用光学干扰模式用于压力传感的可行性.

主要方法:

  • 建造了一种具有高反射率镜子和金属室的法布里-佩罗干扰仪.
  • 嵌入一个灵活的膜在一个室面,与一个镜子附着.
  • 观察并测量了通过镜子穿过的光产生的同心圆形干扰的位移.
  • 与室内的压力变化相关的边缘位移,以创建一个校准图.

主要成果:

  • 调整后的法布里-佩罗干扰仪成功检测出压力变化.
  • 最低可测量的压力在几十帕斯卡尔的范围内实现.
  • 边缘位移与压力变化直接相关,使校准成为可能.

结论:

  • 法布里-佩罗干扰仪是一种可行的光学仪器,用于测量非常低的压力.
  • 使用膜的设计为压力传导提供了一种敏感的方法.
  • 这种技术为低压计量学提供了一种新的方法.