The future of smart sensors antennas for Li-fi technology and 6G Internet
8The future of smart antennas transmits data using light or the electromagnetic spectrum in smartphones
Electromagnetic rays are radiation consisting of sinusoidally varying electric and magnetic fields. Electromagnetic rays travel at the speed of light in a vacuum, which is about 300,000 kilometers per second.
Electromagnetic rays have a very wide range of wavelengths, from radio waves with wavelengths of hundreds of kilometers to gamma rays with wavelengths measuring their length in angstroms (1 angstrom = 10-10 meters).
The electromagnetic spectrum can be divided into several parts, namely:
1. Radio waves
2. Microwaves
3. Infrared
4. Visible light
5.Ultraviolet
6. X-rays
7. Gamma rays
Electromagnetic rays can be produced by a variety of sources, such as:
1. The sun
2. Heated objects
3. Electricity
4. Nuclear
Electromagnetic rays can be used for various purposes, such as:
1. Communication
2. Telecommunications
3. Remote sensing
4. Medical
5. Industry
6. Research
Electromagnetic rays can be harmful to human health if exposed to excessive amounts. For example, ultraviolet rays can cause skin cancer, and X-rays can cause tissue damage.