Electronics/Expanded Edition Afterword

Electrolysis

Description, Faraday's rule, battery in reverse, maybe fuel cells

Ultra high frequency AC

Show how things change at ultra high frequency, wires becoming waveguides. This points the way to unification of electricity and radio.

Maxwell

Math free description, ubiquity of EM

Quantum stuff

Math free

Computers

Path from small circuits to PCs

Final word

Math free piece on how electronics fits into the wider scheme