Question: Two first-order spectrum lines are measured by a 9650-slit/cm spectroscope at angles, on each side of center, of +26o38', +41 o 03' and -26 o

Two first-order spectrum lines are measured by a 9650-slit/cm spectroscope at angles, on each side of center, of +26o38', +41 o 03' and -26 o 18', -41 o 27'. Calculate the wavelengths based on these data.

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