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

Plane Electromagnetic Waves II01:29

Plane Electromagnetic Waves II

4.0K
Consider a plane wavefront traveling in position x-direction with a constant speed. This wavefront can be utilized to obtain the relationship between electric and magnetic fields with the help of Faraday's law.
4.0K
Electromagnetic Fields01:30

Electromagnetic Fields

2.7K
Electric fields generated by static charges, often referred to as electrostatic fields, are characteristically different from electric fields created by time-varying magnetic fields. While the former is a conservative field, implying that no net work is done on a test charge if it goes around in a complete loop in the field, the latter is, by definition, not a conservative field; net work is done, and it is proportional to the rate of change of magnetic flux.
However, the observation of...
2.7K
Plane Electromagnetic Waves I01:30

Plane Electromagnetic Waves I

4.8K
The existence of combined electric and magnetic fields that propagate through space as electromagnetic (EM) waves is the most significant prediction of Maxwell's equations. As Maxwell's equations hold in free space, the predicted electromagnetic waves do not require a medium for their propagation. An EM wave comprises an electric field, defined as the force per charge on a stationary charge, and a magnetic field, which is the force per charge on a moving charge.
The EM field is assumed to be a...
4.8K
Propagation Speed of Electromagnetic Waves01:30

Propagation Speed of Electromagnetic Waves

4.6K
Electromagnetic waves are consistent with Ampere's law. Assuming there is no conduction current Ampere's law is given as:
4.6K
Induced Electric Fields: Applications01:27

Induced Electric Fields: Applications

2.5K
An important distinction exists between the electric field induced by a changing magnetic field and the electrostatic field produced by a fixed charge distribution. Specifically, the induced electric field is nonconservative because it does not work in moving a charge over a closed path. In contrast, the electrostatic field is conservative and does no net work over a closed path. Hence, electric potential can be associated with the electrostatic field but not the induced field. The following...
2.5K
Electromagnetic Wave Equation01:24

Electromagnetic Wave Equation

2.1K
Maxwell's equations for electromagnetic fields are related to source charges, either static or moving. These fields act on a test charge, whose trajectory can thus be determined using suitable boundary conditions. The objective of electromagnetism is thus theoretically complete.
However, although electric and magnetic fields were first introduced as mathematical constructs to simplify the description of mutual forces between charges, a natural question emerges from Maxwell's equations:...
2.1K

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

Leaky Wave Generation Through a Phased-Patch Array.

Sensors (Basel, Switzerland)·2025
Same author

Optimized Leaky-Wave Antenna for Hyperthermia in Biological Tissue Theoretical Model.

Sensors (Basel, Switzerland)·2023
Same author

NextGEM: Next-Generation Integrated Sensing and Analytical System for Monitoring and Assessing Radiofrequency Electromagnetic Field Exposure and Health.

International journal of environmental research and public health·2023
Same author

A Minimum Rank Approach for Reduction of Environmental Noise in Near-Field Array Antenna Diagnosis.

Journal of imaging·2021
Same author

Electrical Permittivity and Conductivity of a Graphene Nanoplatelet Contact in the Microwave Range.

Materials (Basel, Switzerland)·2018
Same author

Compressed Sensing: Applications in Radar and Communications.

TheScientificWorldJournal·2016

相关实验视频

Updated: Jan 7, 2026

An Unbiased Approach of Sampling TEM Sections in Neuroscience
10:56

An Unbiased Approach of Sampling TEM Sections in Neuroscience

Published on: April 13, 2019

7.6K

对电磁场最佳采样的一个直观方法.

Marco Donald Migliore1,2

  • 1Dipartimento di Ingegneria Elettrica e dell'Informazione "Maurizio Scarano" (DIEI), University of Cassino and Southern Lazio, via G. Di Biasio 43, 03043 Cassino, Italy.

Sensors (Basel, Switzerland)
|December 31, 2025
PubMed
概括

本研究解释了最佳场采样,一种电磁场测量技术. 它澄清了这种采样策略背后的物理原则,以改善数据采集.

科学领域:

  • 物理 物理学 物理
  • 电磁主义 电磁主义
  • 信号处理 信号处理

背景情况:

  • 电磁场在各种科学和工程学科中至关重要.
  • 精确测量电磁场需要有效的采样技术.
  • 现有的方法可能缺乏对潜在的物理机制的直观解释.

研究的目的:

  • 为了提供一个清晰,直观的解释最优的现场采样.
  • 阐明控制最佳现场采样策略的物理机制.
  • 为了提高对沿着观测曲线数据采集的理解.

主要方法:

  • 最佳现场采样的概念解释.
  • 对采样策略所涉及的物理原理的分析.
  • 在观察曲线上说明该技术的应用.

主要成果:

  • 提供了对最佳现场采样的易于理解的理解.
  • 澄清了采样策略的物理基础.
  • 提供了观察曲线如何影响采样的见解.

结论:

  • 最佳场采样为电磁场测量提供了一种有效的方法.
关键词:
天线天线天线天线测量过程中的测量.没有冗余的抽样.

更多相关视频

Effective Analysis of Human Exposure Conditions with Body-worn Dosimeters in the 2.4 GHz Band
06:43

Effective Analysis of Human Exposure Conditions with Body-worn Dosimeters in the 2.4 GHz Band

Published on: May 2, 2018

7.4K
Frequency Mixing Magnetic Detection Scanner for Imaging Magnetic Particles in Planar Samples
07:01

Frequency Mixing Magnetic Detection Scanner for Imaging Magnetic Particles in Planar Samples

Published on: June 9, 2016

9.9K

相关实验视频

Last Updated: Jan 7, 2026

An Unbiased Approach of Sampling TEM Sections in Neuroscience
10:56

An Unbiased Approach of Sampling TEM Sections in Neuroscience

Published on: April 13, 2019

7.6K
Effective Analysis of Human Exposure Conditions with Body-worn Dosimeters in the 2.4 GHz Band
06:43

Effective Analysis of Human Exposure Conditions with Body-worn Dosimeters in the 2.4 GHz Band

Published on: May 2, 2018

7.4K
Frequency Mixing Magnetic Detection Scanner for Imaging Magnetic Particles in Planar Samples
07:01

Frequency Mixing Magnetic Detection Scanner for Imaging Magnetic Particles in Planar Samples

Published on: June 9, 2016

9.9K
  • 了解物理机制可以提高这种技术的应用.
  • 这种解释有助于研究人员优化电磁场数据收集.