Question

9. What is a spectrum?​

Answer 1

Answer:

A spectrum is a condition that is not limited to a specific set of values but can vary, without steps, across acontinuum. The word was first used scientifically in optics to describe the rainbowof colors in visible light after passing through a prism. As scientific understanding of light advanced, it came to apply to the entire electromagnetic spectrum.

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Answer 2

Explanation:

A spectrum (plural spectra or spectrums)[1] is a condition that is not limited to a specific set of values but can vary, without steps, across a continuum. The word was first used scientifically in optics to describe the rainbow of colors in visible light after passing through a prism. As scientific understanding of light advanced, it came to apply to the entire electromagnetic spectrum.