Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

Static, Stagnation, Dynamic and Total Pressure01:24

Static, Stagnation, Dynamic and Total Pressure

219
The concept of static, stagnation, dynamic, and total pressure is fundamental in fluid dynamics, often explained using Bernoulli's equation:
219
Hydrostatic Pressure Force on a Curved Surface01:04

Hydrostatic Pressure Force on a Curved Surface

1.3K
Hydrostatic pressure on curved surfaces is a fundamental concept in fluid mechanics with broad applications in the civil engineering field. When fluid is in contact with a curved surface, as in a reservoir, dam, or storage tank, it exerts pressure that varies in magnitude and direction along the curved surface. To assess the total hydrostatic force exerted by the fluid on a curved structure, engineers typically isolate the fluid volume adjacent to the surface and analyze the forces acting on...
1.3K
Fluid Pressure01:14

Fluid Pressure

581
In mechanical engineering, fluid pressure plays a critical role in designing systems that utilize liquid flow, such as hydraulic systems, pumps, and valves. When designing these systems, engineers must ensure they can withstand the forces created by fluid pressure to avoid damage or failure.
According to Pascal's law, a fluid at rest will generate equal pressure in all directions. This pressure is measured as a force per unit area, and its magnitude depends on the fluid's specific...
581
Pressure of Fluids01:14

Pressure of Fluids

15.5K
There are many examples of pressure in fluids in everyday life, such as in relation to blood (high or low blood pressure) and in relation to weather (high- and low-pressure weather systems). A given force can have a significantly different effect, depending on the area over which the force is exerted. For instance, a force applied to an area of 1 mm2 has a pressure that is 100 times greater than the same force applied to an area of 1 cm2. That's why a sharp needle is able to poke through...
15.5K
Fluid Pressure over Flat Plate of Constant Width01:05

Fluid Pressure over Flat Plate of Constant Width

1.6K
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...
1.6K
Pressure Variation in a Fluid at Rest01:11

Pressure Variation in a Fluid at Rest

220
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...
220

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Heart Rate Variability in the Detection of Cognitive Fatigue Through Transfer Learning.

Advances in experimental medicine and biology·2026
Same author

Reducing Artifact Preprocessing in Heart Rate Variability-Based Personalized Psychosis Prediction Using Adaptive Long Short-Term Memory Models.

International journal of neural systems·2025
Same author

Developing predictive precision medicine models by exploiting real-world data using machine learning methods.

Journal of applied statistics·2024
Same author

Investigating the overlap of machine learning algorithms in the final results of RNA-seq analysis on gene expression estimation.

Health information science and systems·2024
Same author

TarBase-v9.0 extends experimentally supported miRNA-gene interactions to cell-types and virally encoded miRNAs.

Nucleic acids research·2023
Same author

Analysing sentiment change detection of Covid-19 tweets.

Neural computing & applications·2023

相关实验视频

Updated: Jun 5, 2025

Development of a Benchtop Model for Evaluating the Compatibility of Wound Dressing Materials with Negative Pressure Wound Therapy Systems
06:45

Development of a Benchtop Model for Evaluating the Compatibility of Wound Dressing Materials with Negative Pressure Wound Therapy Systems

Published on: May 2, 2025

240

通过四层测试来诊断学生在水定压力方面的误解.

Nikos Bessas1, Eleni Tzanaki2, Denis Vavougios2

  • 1Department of Computer Science and Biomedical Informatics, University of Thessaly, Lamia, Greece.

Heliyon
|December 10, 2024
PubMed
概括

希腊初中生对水静压有很大的误解,特别是关于容器的形状和压力方向. 这项研究突出了知识差距,强调了改善物理教学方法的必要性.

科学领域:

  • 物理教育 物理教育
  • 流体力学 流体力学 流体力学

背景情况:

  • 水静压是初中物理课程中的一个关键概念.
  • 了解液体平衡对于12-13岁的学生来说至关重要.
  • 现有的文献表明,学生在这个领域普遍存在误解.

研究的目的:

  • 识别和分析希腊初中学生关于水静压的误解.
  • 调查学生对影响水静压的因素的理解,例如容器形状和面积.
  • 开发一种诊断工具,以评估对水静压的概念理解.

主要方法:

  • 一个彻底的国际文献综述和教师采访为调查问卷设计提供了信息.
  • 在希腊雅典,对33名八年级学生进行了四级测试.
  • 物理专家使用艾肯的V指数来确定内容的有效性,并使用SPSS进行统计分析.

主要成果:

  • 关于容器形状,面积和压力方向的影响,观察到高误解率.
  • 发现了重要的知识差距,表明缺乏基本理解.
  • 尽管总体误解率可能很低,但具体的概念缺陷突出.

结论:

关键词:
4 级别测试 级别测试流体 流体 流体 流体水定压力压力是水定压力.小学高中的初中生.错误的观念 错误的观念物理 物理学 物理

更多相关视频

Problem-Solving Before Instruction PS-I: A Protocol for Assessment and Intervention in Students with Different Abilities
10:26

Problem-Solving Before Instruction PS-I: A Protocol for Assessment and Intervention in Students with Different Abilities

Published on: September 11, 2021

3.9K
Tilt Testing with Combined Lower Body Negative Pressure: a "Gold Standard" for Measuring Orthostatic Tolerance
14:09

Tilt Testing with Combined Lower Body Negative Pressure: a "Gold Standard" for Measuring Orthostatic Tolerance

Published on: March 21, 2013

20.7K

相关实验视频

Last Updated: Jun 5, 2025

Development of a Benchtop Model for Evaluating the Compatibility of Wound Dressing Materials with Negative Pressure Wound Therapy Systems
06:45

Development of a Benchtop Model for Evaluating the Compatibility of Wound Dressing Materials with Negative Pressure Wound Therapy Systems

Published on: May 2, 2025

240
Problem-Solving Before Instruction PS-I: A Protocol for Assessment and Intervention in Students with Different Abilities
10:26

Problem-Solving Before Instruction PS-I: A Protocol for Assessment and Intervention in Students with Different Abilities

Published on: September 11, 2021

3.9K
Tilt Testing with Combined Lower Body Negative Pressure: a "Gold Standard" for Measuring Orthostatic Tolerance
14:09

Tilt Testing with Combined Lower Body Negative Pressure: a "Gold Standard" for Measuring Orthostatic Tolerance

Published on: March 21, 2013

20.7K
  • 有效的教学策略和实验方法是必要的,以解决发现的误解.
  • 这项研究为教育工作者和研究人员提供了有价值的诊断工具,以改善液压压力指令.
  • 提高对水静压的概念理解对于基础物理教育至关重要.