radio window การใช้

• The only lines that can be observed are those that fall in the radio window.
• For example, the radio window runs from about one centimeter to about eleven-meter waves.
• The atmospheric radio window at 94 GHz is used for imaging millimeter-wave radar applications in astronomy, defense, and security applications.
• The combined absorption spectra of the gases in the atmosphere leave " windows " of low infrared and radio windows that transmit some infrared and radio waves at longer wavelengths.
• Space-based astronomy is even more important for frequency ranges which are outside the optical window and the radio window, the only two wavelength ranges of the electromagnetic spectrum that are not severely attenuated by the atmosphere.