https://peertube.magdowski.de/videos/watch/da7d84b7-eb96-4518-bcf0-5be8804ae09f In this live-streamed exercise in the "Electromagnetic Compatibility" module, we are discussing the solution of task 15 of our exericse booklet on shielding. An electromagnetic wave with an amplitude of E = 1 V/m and a frequency of f = 10 MHz impinges on a copper wall. The source of the field is located at a distance of r = 10 m from the wall. How large are a) the skin depth δ inside the metal, b) the wave impedance Z_m inside the metal, c) the transmission coefficient t_am from air to metal, d) the amplitude of the current density J_0 on the surface of the copper wall, and e) the current I flowing on a wall with a width of 1 m? Exercise booklet: print version: https://cloud.ovgu.de/s/PTfXwD74kwbYaYM smartphone version: https://cloud.ovgu.de/s/KKoQeBJdimFzwWg Lecture slides: https://cloud.ovgu.de/s/rmDBzgykbsEdkeS Notes: https://cloud.ovgu.de/s/NoNnxmwaysQCJ9T GNU Octave commands: clear all clc E=1 f=10e6 r=10 c=3e8 lambda=c/f r_0=lambda/2/pi mu=4pi1e-7 kappa=58e6 delta=1/sqrt(pimukappaf) delta1e6 kappa omega=2pif epsilon=8.854e-12 omegaepsilon Z_m=sqrt(1jomegamu/(kappa+1jomegaepsilon)) Z_m=sqrt(1jomegamu/kappa) Z_m=(1+1j)/kappa/delta Z_m1e3 Z_a=377 t_am=2Z_m/(Z_a+Z_m) r_am=(Z_m-Z_a)/(Z_m+Z_a) t_am=1+r_am E_m=t_amE J_0=kappaE_m I=J_01*delta abs(I) Chapter marks: 00:00 Welcome and explanation of the task 04:39 Skin depth 17:25 Wave impedance 29:31 Transmission coefficient 45:17 Current density and current on the wall Original chat from Twitch: kiskiller0: is this university physics ? neajmahmud: A/v Fri, 19 Jun 2026 10:07:47 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://peertube.magdowski.de https://peertube.magdowski.de/lazy-static/avatars/df74db12-5ddc-45c0-afab-4cdf2486a5a1.jpg https://peertube.magdowski.de/videos/watch/da7d84b7-eb96-4518-bcf0-5be8804ae09f All rights reserved, unless otherwise specified in the terms specified at https://peertube.magdowski.de/about and potential licenses granted by each content's rightholder.