Light can be best described as
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A stream of particles
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A wave.
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A vibration in the space-time continuum
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Both particle and wavelike
Light exhibits wave-particle duality, meaning it has characteristics of both waves and particles. This is a fundamental principle in quantum physics, demonstrated by phenomena like interference (wave-like) and the photoelectric effect (particle-like). Neither model alone fully explains light's behavior.
Light is best described as having both particle and wave properties — this is wave-particle duality, a cornerstone of quantum mechanics. Light behaves as a wave in phenomena like diffraction and interference (e.g., the double-slit experiment), but behaves as discrete particles (photons) in phenomena like the photoelectric effect, where light knocks electrons out of a material in quantized packets of energy. 'A stream of particles' alone ignores diffraction/interference; 'a wave' alone ignores the photoelectric effect and photon quantization; 'a vibration in the space-time continuum' isn't a real physical description of light — it conflates light with gravitational-wave-like concepts, which is not accurate.