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This is a very complex topic, and doubtless there is more to discover about light. The quick and dirty layman's answer is that light is part of the spectrum of electromagnetic radiation. It has some properties that make it seem particle-like, and other properties that make it seem wave-like. Sunlight contains light from every part of the visible spectrum which is why we see rainbows from time to time, and colors in prisms and colorless clear gemstones. Light requires no medium through which to move (unlike sound, which needs air or some other physical medium). It also travels at a mind-boggling 186,000 miles per second or so, and no matter how fast an observer moves light (in a vacuum) will be measured at this velocity, leading to some of the strange relativistic effects. Sunlight takes roughly 8.5 minutes to travel from the sun to the surface of the earth.

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16y ago
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Q: What are the properties of sunlight?
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