The “water hole” in SETI would fall in which wavelength or color range? A. Visib

Question

The “water hole” in SETI would fall in which wavelength or color range? A. Visible light B. Between about 1 and 2m wavelength C. Between 18 and 21cm wavelength D. In the infrared wavelength regime The “water hole” in SETI would fall in which wavelength or color range? A. Visible light B. Between about 1 and 2m wavelength C. Between 18 and 21cm wavelength D. In the infrared wavelength regime A. Visible light B. Between about 1 and 2m wavelength C. Between 18 and 21cm wavelength D. In the infrared wavelength regime

Explanation / Answer

C. Between 18 and 21cm wavelength.

Explanation : A quiet band of the electromagnetic spectrum between 1420-1666 MHz corresponding to wavelengths of 21 and 18cm respectively is known as waterhole.

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