>700 very long wavelengths correspond to which region of the spectrum?

>700 very long wavelengths correspond to which region of the spectrum?

• A. UV
• B. 400-700nm Wavelength
• C. Infrared
• D. Visible light

Answer: (C)

Wavelengths get longer as you move from the blue end to the red end of the spectrum, and the visible range is about 400 to 700 nanometers. Anything longer than roughly 700 nanometers falls into the infrared region, which is why very long wavelengths above 700 nm are infrared. Ultraviolet is shorter than visible light, and the ranges listed as 400–700 nm or “visible light” sit within the visible spectrum, not beyond it. Infrared is also the part of the spectrum we associate with heat and many everyday sensing technologies.

Wavelengths get longer as you move from the blue end to the red end of the spectrum, and the visible range is about 400 to 700 nanometers. Anything longer than roughly 700 nanometers falls into the infrared region, which is why very long wavelengths above 700 nm are infrared. Ultraviolet is shorter than visible light, and the ranges listed as 400–700 nm or “visible light” sit within the visible spectrum, not beyond it. Infrared is also the part of the spectrum we associate with heat and many everyday sensing technologies.