K band (infrared)

In infrared astronomy, the K band is an atmospheric transmission window centered on 2.2 μm (in the near-infrared 136 THz range).

Electromagnetic spectrum

← higher frequencies longer wavelengths → Gamma rays X-rays Ultraviolet Visible Infrared Terahertz radiation Microwave Radio

Visible (optical)	Violet Blue Green Yellow Orange Red

Microwaves	W band V band Q band K_a band K band K_u band X band S band C band L band

Radio	EHF SHF UHF VHF HF MF LF VLF ULF SLF ELF

Wavelength types	Microwave Shortwave Medium wave Longwave

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