What do you understand by the invisible spectrum ?
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2
Answer:
The portion of the spectrum either below the red (infrared) or above the violet (ultraviolet), which is invisible to the eye, the waves being too long or too short to affect the retina.
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5
Answer:
The portion of the spectrum either below the red (infrared) or above the violet (ultraviolet), which is invisible to the eye, the waves being too long or too short to affect the retina.
Explanation:
the range of wavelengths of electromagnetic radiation that lie on either side of the visible spectrum and which consists of infrared and ultraviolet light.
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