The story
From light (“visible”) + spectrum (“range of electromagnetic wavelengths”).
Etymology from Wiktionary, CC BY-SA 4.0.
light spectrum
Today it means: The portion of the electromagnetic spectrum that is visible to humans. Full definition →
Today it means: The portion of the electromagnetic spectrum that is visible to humans. Full definition →
From light (“visible”) + spectrum (“range of electromagnetic wavelengths”).
Etymology from Wiktionary, CC BY-SA 4.0.