[填空题]
Two first-order spec0wpa t2a810hc d8aq ieoxisux7f- j*9tk:ay-;*sw vbu/zsb: /w3d ponrum lines are measured 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
