Light

Light is electromagnetic radiation with a wavelength that is visible to the eye (visible light) or, in a technical or scientific setting, electromagnetic radiation of any wavelength. The three basic dimensions of light (i.e., all electromagnetic radiation) are:

Related Topics:
Electromagnetic radiation - Wavelength - Eye - Dimension

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• intensity (or brilliance or amplitude, perceived by humans as the brightness of the light),
• frequency (or wavelength, perceived by humans as the color of the light), and
• polarization (or angle of vibration and not perceptible by humans under ordinary circumstances)

Due to wave-particle duality, light simultaneously exhibits properties of both waves and particles. The precise nature of light is one of the key questions of modern physics.

Related Topics:
Wave-particle duality - Wave - Particles - Physics

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Light: Visible electromagnetic radiation ►