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We obtain the spectrum analytically as the solution to a pair of parametric equations and algebraically using a remarkably accurate approximation to the cosine function. The approach is also applied to a variety of other quantum wells."},{"label":"DOI","value":"10.1119/1.214077"},{"label":"Volume","value":"74"},{"label":"Issue","value":"1"},{"label":"Publication Date","value":"D:00 M:00 Y:2006"},{"label":"Publication Information","value":"Copyright 2006 American Association of Physics Teachers"}],"description":"Exact and approximate energy spectrum for the finite square well and related potentials","sequences":[{"@type":"sc:Sequence","canvases":[{"@id":"https://iiif.quartexcollections.com/portland/iiif/00a7cdae-4e16-4804-be98-90af8610980a/canvas/_1","@type":"sc:Canvas","label":"Exact and approximate energy spectrum for the finite square 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