• Duration:46 minutes and 20 seconds
  • Date:2017/11/04
  • Uploader:老白菜
Introduction
Electromagnetic waves are a form of motion of electromagnetic fields. Electricity and magnetism can be said to be two sides of the same coin. A changing electric field will produce a magnetic field, and a changing magnetic field will produce an electric field. The changing electric field and the changing magnetic field constitute an inseparable unified field, which is the electromagnetic field. The propagation of the changing electromagnetic field in space forms electromagnetic waves. The changes in electromagnetism are like the gentle breeze blowing on the water surface to generate water waves, so it is called Electromagnetic waves are also often called radio waves.
Unfold ↓

You Might Like

Recommended Posts

Celebrating Programmers Day
The 28thday of each year is Programmer's Day, a special day (September 13th in a common year and September 12th in a leap year). The number 256 was chosen because it is the maximum value that can be r
dcexpert Talking
NXP LPC1768 BMW Development Board Chapter 27 BMW 1768--TFT4.3 Screen Flashing
[b][font=宋体][size=16pt]Chapter 27[/size][/font][font=宋体][size=16pt]BMW[/size][/font][font=宋体][size=16pt]1768[/size][/font][font=宋体][size=16pt]——TFT4.3[/font][font=宋体]Screen Refresh[/font][/size][/font
旺宝电子 NXP MCU
A comprehensive look at digital temperature sensor specifications
To achieve optimal performance and ensure system robustness, system monitoring measurements are necessary. One typical measurement that is required is the ambient temperature. Using a simple digital t
cobble1 Test/Measurement
Battery level detection for low power devices
[p=30, 2, left]In zigbee product design, low-power devices often use button batteries or dry batteries. It is necessary to detect the battery voltage to remind the backend or customers to replace the
lemon0809 RF/Wirelessly
About FFT Filters!!
If I have 2400 data points, I fill the data points with zeros to 4096 in order to use FFT. The discrete points in the time domain are transformed to the frequency domain, and then the high-frequency c
kevinkevin DSP and ARM Processors
CAN IAP Example
This content is originally created by EEWORLD forum user Xueshan Feihu11 . If you want to reprint or use it for commercial purposes, you must obtain the author's consent and indicate the sourceCAN IAP
雪山飞狐11 Embedded System

Recommended Content

可能感兴趣器件

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

About Us Customer Service Contact Information Datasheet Sitemap LatestNews


Room 1530, 15th Floor, Building B, No.18 Zhongguancun Street, Haidian District, Beijing, Postal Code: 100190 China Telephone: 008610 8235 0740

Copyright © 2005-2024 EEWORLD.com.cn, Inc. All rights reserved 京B2-20211791 京ICP备10001474号-1 电信业务审批[2006]字第258号函 京公网安备 11010802033920号