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The corresponding spectrum may exhibit a continuum, or may have superposed on the continuum bright lines (an emission spectrum) or dark lines (an absorption spectrum), as illustrated in the following figure.
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csep10.phys.utk.edu/astr162/lect/light/absorption.html
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By the turn of the century it was well known that an emission spectrum existed for the various elements. The experiment is easy: An element, such as hydrogen, is excited by an electrical potential until it gives off light.
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www.iun.edu/~cpanhd/C101webnotes/modern-atomic-theory/e...
www.iun.edu/~cpanhd/C101webnotes/modern-atomic-theory/emission-spectrum.html
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Figure 12.4: Photon emission ... Transitions ending up at the n = 2 level give rise to photons in the Balmer series, which is light in the visible part of the electromagnetic spectrum. Transitions to the n = 1 level give rise to the Lyman series, and to the n = 3 level give the Paschen series.
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theory.uwinnipeg.ca/mod_tech/node151.html
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STEP 1: Observing the actual spectrum of a gas ... STEP 4: Matching trial spectral lines to those of the actual spectrum ... Observe the spectrum of a gas by dragging any of the gas lamps (except the bottom one since it is an unknown gas) from the bottom left of the screen and dropping it into the gas lamp socket above.
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phys.educ.ksu.edu/vqm/html/emission.html
phys.educ.ksu.edu/vqm/html/emission.html
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Absorption spectrum - Wikipedia, the free encyclopedia
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A material's absorption spectrum shows the fraction of incident electromagnetic radiation absorbed by the material over a range of frequencies. Atoms, for example, have absorption lines at wavelengt...
en.wikipedia.org/wiki/Absorption_spectrum
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Click on the symbol of an element to see its atomic emission spectrum...
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chemistry.bd.psu.edu/jircitano/periodic4.html
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Exactly--that's called an emission spectrum. But there is another way in which elements can produce spectra. Suppose that instead of a heated sample of some element, you have the element in the form of a relatively cool gas.
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www.colorado.edu/physics/2000/quantumzone/fraunhofer.ht...
www.colorado.edu/physics/2000/quantumzone/fraunhofer.html
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Spectrum associated with emission of electromagnetic radiation by atoms (or other species) resulting from electronic transitions from higher to lower energy states. Search the Dictionary...
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www.chemicool.com/definition/emission_spectrum.html
www.chemicool.com/definition/emission_spectrum.html
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