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Light - Wikipedia
2.1: Light as a Wave - Physics LibreTexts
Light Waves - BBC Bitesize
The Nature of Light - The Physics Hypertextbook
Wave Behaviors - NASA Science
Physics Tutorial: Light Waves and Color - The Physics Classroom
23.2: Electromagnetic Waves and their Properties
Light - Electromagnetic, Wavelength, Spectrum | Britannica
Light - Wavelength, Frequency, Amplitude | Britannica
The Electromagnetic Spectrum - HubbleSite