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Unformatted text preview: low pressure different colored light is emitted o Neon gas produces a red-orange glow o Sodium gas produces a yellow glow • When such light is passed through a prism only a few wavelengths are present in the resulting spectra o These appear as lines separated by dark areas, and thus are called line spectra When the spectrum emitted by hydrogen gas was passed through a prism and separated into its constituent wavelengths four lines appeared at characteristic wavelengths In 1885 a Swiss school teacher figured out that the frequencies of the light corresponding to these wavelengths fit a relatively simple mathematical formula: where C = 3.29 x 10 15 s-1 ( not the 'c' used for the speed of light ) However, the physical basis for this relationship was unknown....
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