wave 1                      wave 2
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wavelength lambda             500 nm                      505 nm

                                       7                          7
wavenumber k           1.256637062 x 10  rad/m    1.244195110 x 10  rad/m

                                       15                         15
ang frequency omega    3.767303135 x 10   rad/s   3.730003104 x 10   rad/s

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