End Matter

Image Credits

• Fig.

  4.1: © Sevenchw (C. Wang), https://commons.wikimedia.org/wiki/File:Current_flow_in_cylinder_new.svg,
  CC BY SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0/).

• Fig.

  4.2: Biezl, https://commons.wikimedia.org/wiki/File:Skin_depth.svg, public domain. Modified from original.

• Fig.

  4.3: © Sevenchw (C. Wang), https://commons.wikimedia.org/wiki/File:Experiment_for_current_density_and_resistance.svg,
  CC BY SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0/).

• Fig.

  4.4: © YahuiZ (Y. Zhao), https://commons.wikimedia.org/wiki/File:Figure4.4.svg,
  CC BY SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0/). Modified by author.