EM WAVE *(Wi-Fi) 2.4 GHz 대역파장 --길이: 약 12.5cm : 파장이 길어 장애물을 잘 통과하고 > WEB 중요웹사이트연결

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Wi-Fi uses radio waves across three main frequency bands:

 2.4 GHz (4.92-inch wavelength), 5 GHz (2.36-inch wavelength), and 6 GHz (1.97-inch wavelength). Lower frequencies provide longer range and better wall penetration, while higher frequencies deliver much faster data speeds with a shorter range.Frequency and Wavelength Comparison2.4 GHz BandFrequency: 2,400 to 2,500 MHzWavelength: About 4.92 inches (12.


Wikipedia  https://en.wikipedia.org/wiki/Wi-Fi

https://en.wikipedia.org › wiki › Wi-Fi
Wi-Fi most commonly uses the 2.4 gigahertz (120 mm) UHF and 5 gigahertz (60 mm) SHF radio bands, with the 6 gigahertz SHF band used in newer generations of the ...Read more


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Class Wave-
length
λ
{\displaystyle \lambda } Freq-
uency
f
{\displaystyle f} Energy per
photon
E
{\displaystyle E}
Ionizing
radiation γ Gamma rays 10 pm 30 EHz 124 keV
100 pm 3 EHz 12.4 keV
HX Hard X-rays
SX Soft X-rays 10 nm 30 PHz 124 eV
EUV Extreme
ultraviolet 121 nm 3 PHz 10.2 eV
NUV Near ultraviolet
400 nm 750 THz 3.1 eV
Visible spectrum 700 nm 480 THz 1.77 eV
Infrared NIR Near infrared 1 μm 300 THz 1.24 eV
10 μm 30 THz 124 meV
MIR Mid infrared
100 μm 3 THz 12.4 meV
FIR Far infrared
1 mm 300 GHz 1.24 meV
Micro-
waves[15] EHF Extremely high
frequency
1 cm 30 GHz 124 μeV
SHF Super high
frequency
1 dm 3 GHz 12.4 μeV
UHF Ultra high
frequency
1 m 300 MHz 1.24 μeV
Radio
waves[15] VHF Very high
frequency
10 m 30 MHz 124 neV
HF High
frequency
100 m 3 MHz 12.4 neV
MF Medium
frequency
1 km 300 kHz 1.24 neV
LF Low
frequency
10 km 30 kHz 124 peV
VLF Very low
frequency
100 km 3 kHz 12.4 peV
3 Band 3
1 Mm 300 Hz 1.24 peV
2 Band 2
10 Mm 30 Hz 124 feV
1 Band 1
100 Mm 3 Hz 12.4 feV
Sources[16][17][18] Table shows the lower frequency limits (and higher wavelength limits) for the specified class
Explanation of units and prefixes.


EM WAVE  https://en.wikipedia.org/wiki/Electromagnetic_spectrum

====
The electromagnetic (EM) spectrum is the full range of all types of electromagnetic radiation, ordered by frequency and wavelength. All EM waves travel at the speed of light in a vacuum and consist of oscillating electric and magnetic fields.Watch this short video to learn more about the properties and everyday examples of waves across the electromagnetic spectrum:

https://www.google.com/search?q=em+wave+spectrum&sca_esv=52231ff833dc7835&sxsrf=APpeQnvx8aRs-G8rMftIwW1mJHfgc67Uig%3A1787683130642&source=hp&ei=OuGNatngI6_40PEP4J_5uAk&iflsig=ABILxe8AAAAAao3vSr-ZmrqwnSZhBca-FG0bx5-uxmi0&oq=em+wave&gs_lp=Egdnd3Mtd2l6IgdlbSB3YXZlKgIIATIFEAAYgAQyBRAAGIAEMgUQABiABDIFEAAYgAQyBRAAGIAEMgUQABiABDIFEAAYgAQyBRAAGIAEMgUQABiABDIFEAAYgARIqGVQ6wxYmEBwAngAkAEAmAHsA6ABjwuqAQk1LjEuMC4xLjG4AQHIAQD4AQGYAgqgAsAMqAIKwgINEC4YxwEYrwEY6gIYJ8ICBxAjGOoCGCfCAgQQIxgnwgILEC4YgAQYxwEY0QPCAgUQLhiABMICDRAjGKIHGJ4GGOoCGCfCAhEQLhiABBixAxiDARjHARjRA8ICGhAuGIAEGIoFGI0GGLEDGIMBGMcBGK8BGI4FwgILEC4YgAQYsQMYgwHCAhQQLhiABBiKBRiNBhixAxjHARjRA8ICCxAAGIAEGLEDGIMBwgIIEC4YgAQYsQPCAgsQLhiABBjHARivAcICDhAuGIAEGIoFGI0GGLEDwgIREAAYgAQYigUYjQYYsQMYgwHCAg4QLhiABBjHARivARiOBcICCBAAGIAEGLEDwgIHEC4YgAQYCpgDL_EFR2v12A1_QMvxBT3LSeptxHW2kgcHNS4zLjQtMqAHhlOyBwczLjMuNC0yuAeADMIHBzItMS43LjLIB4kBgAgB&sclient=gws-wiz



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