Array ( [0] => Array ( [title] => L48A [link] => https://www.youtube.com/embed/K_V8Do4p7kw ) ) 國立清華大學開放式課程OpenCourseWare(NTHU, OCW) - 第48講|Lecture 9 Electromagnetic Waves|9_4A Absorption and Dispersion 9_4_1 Electromagnetic Waves in Conductors