Question

What is the source of visible light???

Answer 1

Answer:

Excitation of electron from valence orbit of atom is the source of visible light .

Answer 2

Answer:

the ultraviolet radiation energizes the internal phosphor coating causing it to emit the bright white light that is characteristics of fluorescent light. A unique feature of non- incandescent visible light sources is that the wavelengths they generate are often concentrated in narrow bands called line spectra.

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