Array ( [0] => Array ( [title] => L11A [link] => https://www.youtube.com/embed/mX12GPMbiMU ) [1] => Array ( [title] => L11B [link] => https://www.youtube.com/embed/vA0yMx9-exc ) [2] => Array ( [title] => L11C [link] => https://www.youtube.com/embed/4U4GBcW3hUY ) ) 國立清華大學開放式課程OpenCourseWare(NTHU, OCW) - 第11講 space group + Frauhofer diffraction