24.1 The Study of Light – Flashcards
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Electromagnetic spectrum
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The arrangement of electromagnetic radiation according to wavelength
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Photon
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A small packet of light energy
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Continuous spectrum
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An uninterrupted band of light emitted by an incandescent solid, liquid, or gas under pressure
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Absorption spectrum
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A continuous spectrum produced when white light is passed through a cool gas under low pressure; The gas absorbs selected wavelengths of light, and the spectrum looks like it has dark line superimposed
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Emission spectrum
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A series of bright lines of particle wavelengths produced by hot gas under low pressure
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Spectroscopy
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The study of the properties of light that depends on wavelength
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Doppler effect
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The apparent change in frequent of electromagnetic or sound waves caused by the realities motions of the source and the observer