Stored, generated and grid electricity, and how to carry it without being killed by it.
Make a steady electric current from chemicals — for the telegraph, plating and electrolysis — before there is any generator.
Needs first: Smelting: first metal (Materials), Acids (Materials), Pottery and the first kiln (Materials)
Convert motion into electricity, and electricity back into motion.
Needs first: Machine tools and precision (Tools)
Reach an industrial energy supply that does not have to be paid for twice.
Needs first: The generator, Electrochemistry and light metals (Materials), Computing (Computing)
Every guide, build, reference sheet and book reached from the steps above.
Not a source of energy but a way of carrying it: make it, move it, store it — and know exactly how it kills.
Level 7Every source of energy in one place: what it gives, what it takes, and how it can hurt you. Key figures, a reference sheet for each, and where to read further.
Level 3What matter is made of and how it changes: amounts, gases, acids, the energy and speed of reactions, electrochemistry, and the reactions every industry on the ladder runs on.
Level 3Fourteen branches, each with the handful of results a civilization cannot rebuild without, and where to learn the rest.
Level 3Force, energy, heat, light, electricity, relativity and the atom: the laws every engine, wire and lens obeys, each with what it lets you do and who first found it.
Level 3The sky as calendar, clock and compass, then orbits, distances and the universe: each result with what it lets you do and who first found it.
Level 3Water in and on the ground, the air and weather, rocks and time, earthquakes and tsunamis, and the climate: each result with what it lets you do and who first found it.
Drawn overview sheets, each with its corrections printed under it. They orient; they are never the thing you identify from.
