Long Wavelength Low Frequency
我. 介绍
A. Definition of low frequency
乙. Importance of studying low frequency waves
二. Properties of long wavelength
A. Definition of wavelength
乙. Explanation of long wavelength
C. Examples of long wavelength waves
三、. Low frequency applications
A. Radio communication
1. Explanation of radio frequency spectrum
2. Importance of low frequency for long distance communication
乙. Medical applications
1. Introduction to diagnostic imaging
2. Use of low frequency waves in ultrasound imaging
C. Earthquake detection
1. Explanation of seismic waves
2. Importance of low frequency for detecting earthquakes
四号. Engineering challenges in low frequency wave research
A. Designing antennas for long wavelength waves
乙. Overcoming atmospheric absorption and noise
V. 结论
A. Recap of low frequency characteristics
乙. Importance of understanding and researching long wavelength low frequency waves
C. Potential future developments in low frequency wave technology
