Basics of Light

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What is light?
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Light is a form of electromagnetic radiation that is visible to the human eye.
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What is the speed of light in a vacuum?
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The speed of light in a vacuum is approximately 299,792 kilometers per second (km/s).
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How does light behave when it encounters a medium?
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Light can be absorbed, transmitted, or reflected by a medium.
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What is the visible spectrum?
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The visible spectrum refers to the range of wavelengths of light detectable by the human eye, approximately 380 to 750 nm.
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What is wavelength?
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Wavelength is the distance between two consecutive crests or troughs of a wave.
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