Can I use different LEDs to detect wavelengths other than the green wavelengths detected by the VHS-1?

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Can I use different LEDs to detect wavelengths other than the green wavelengths detected by the VHS-1?

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Yes! Usually an LED detects light having a wavelength somewhat less than the wavelength it emits. This means a blue LED will detect UV-A light. A near-infrared LED will usually detect red light. We’ll have much more information about other kinds of LEDs later. See REFERENCES for additional information.

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