[填空题]
Two first-order spectru jlsex s2a.xty-*86 oe. ej*kjm lines are e/sr1r6m7 )lr;d 1a b7hoghqxmeasured by a $9500-line/cm$ spectroscope at angles, on each side of center, of +26$^{\circ}\,$ 38$^\prime$,+41$^{\circ}\,$ 08$^\prime$ and -26$^{\circ}\,$48$^\prime$,-41$^{\circ}\,$ 19$^\prime$. What are the wavelengths?
$\lambda_{26.72^{\circ}}\;=\;$ nm
$\lambda_{41.23^{\circ}}\;=\;$ nm
