Absorption-spectrum meaning

The electromagnetic spectrum, broken by a specific pattern of dark lines or bands, observed when radiation traverses a particular absorbing medium and through a spectroscope. The absorption pattern of an element is unique and can be used to identify the substance of the medium.
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A spectrum with a pattern of dark bands or lines created when light passes through a gas or liquid into a spectroscope: the chemical elements of the gas or liquid absorb specific wavelengths of light creating a unique pattern which can be used to analyze the gas or liquid chemically.
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The range of frequencies of electromagnetic radiation readily absorbed by a substance by virtue of its chemical composition.
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(physics) The characteristic pattern of dark lines or bands that occurs when electromagnetic radiation is passed through an absorbing medium into a spectroscope.
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