Part 1 of 5 · freeIntroduction
Electricity exists in nature: lightning, electric fish, the crackle of friction. What changed the world was learning to produce it, to transport it, and to put it to work.
That story runs across more than two centuries, full of risky experiments and bitter rivalries.
The rest is in the Sophia app.The remaining parts, the open-book quiz and the full glossary. Free to start; Premium unlocks everything.
- 2Making sense of lightning
- 3Faraday and the making of current
- 4Edison against Tesla
- 5A plugged-in world
Open-book quiz8 questions whose answers are in the text.
Glossary7 terms explained in a tap.
30 languagesThe same course, from French to Japanese.
