Array ( [0] => Array ( [title] => L61A [link] => https://www.youtube.com/embed/LKjVJ75W_DQ ) ) 國立清華大學開放式課程OpenCourseWare(NTHU, OCW) - 第61講|Lecture 12 Electrodynamics and Relativity|12_3A Relativistic Electrodynamics