Array ( [0] => Array ( [title] => L15A [link] => https://www.youtube.com/embed/bF9-iizb34Y ) [1] => Array ( [title] => L15B [link] => https://www.youtube.com/embed/gHMCRigMtbk ) [2] => Array ( [title] => L15C [link] => https://www.youtube.com/embed/Tgs6ZSvuEVU ) ) 國立清華大學開放式課程OpenCourseWare(NTHU, OCW) - 第15R講 Fourier transform + reciprocal lattice