Science Art:Induction Coil Cutaway, 1920

Scientific illustration of an induction coil from The How and Why of Radio Apparatus. It's an old electric image. Antique equipment FTW.

Scientific illustration of an induction coil from The How and Why of Radio Apparatus. It's an old electric image. Antique equipment FTW. Click to embiggen

From Harry Winfield Secor’s The How and Why of Radio Apparatus, from the Experimenter Publishing Co., which you can read here.

Electricity was the theme of my Yule week.