Tangent
TESLA
The Real Science of Nikola Tesla
Joe W. Kuefler
A rigorous, experiment-driven account of Nikola Tesla and the physics he mastered — written for engineers, backed by primary sources, free of mythology. Every chapter includes at least one reproducible experiment.
Chapters
Part I — The Foundation
1 Before We Start: Electricity, Magnetism, and the Two Rules Revised Voltage, current, resistance, Ohm's Law, magnetic fields, Oersted, Faraday — from absolute zero
2 AC and DC: What They Are and Where They Come From Revised DC vs. AC, why generators make AC, the commutator, RMS, 50/60 Hz, lightning, skin effect, Faraday cage, arcing
3 The Transformer: The Real Reason AC Won Revised Turns ratio, power conservation, I²R losses, why DC has no transformer, the wall wart explained, transmission chain, HVDC
Part II — The Physics Engine
4 Magnetism: The Invisible Force Draft — needs revision B field, flux, Faraday's Law in depth, Lenz's Law, the falling magnet experiment
5 Magnetic Cores, Losses, and Maxwell Split pending Magnetic circuits, permeability, saturation, eddy currents, hysteresis, Maxwell in plain English
6 The Brushed DC Motor: What Tesla Had to Beat Draft Commutator mechanics, back-EMF, torque curves, build one from a AA battery and a magnet
Part III — Tesla's Breakthrough
7 The Rotating Magnetic Field: Budapest, February 1882 Draft The Goethe walk, the vector proof, two-phase vs. three-phase, Tesla's 1888 patents
8 The AC Induction Motor: No Brushes, No Contact, No Problem Draft Squirrel cage rotor, induction creates torque, slip, torque-slip curve, VFDs, NEMA efficiency numbers
9 The War of Currents: What Was Really at Stake Draft Pearl Street, copper economics, Harold Brown, Columbian Exposition 1893, Niagara 1895, 50 vs. 60 Hz
Part IV — Tesla Builds Bigger
10 The Tesla Coil: A Resonant RF Machine Draft LC resonance, Q factor, voltage multiplication, streamers, Faraday cage, build a solid-state coil
11 Radio: The Fight Tesla Almost Won Draft Maxwell, Hertz, Marconi, Tesla's prior art, the 1943 Supreme Court ruling, build a crystal radio
Part V — Reaching Further
Part VI — The Hard End
14 Weapons, Earthquakes, and the Mythology Draft Teleforce physics, mechanical resonance, the free energy myth, Tesla vs. Einstein
15 The Man Draft Photographic memory, the pigeon, the number 3, why he died broke, what we use every day
16 Room 3327: The Death, the Trunks, and What Went Missing Draft January 8 1943, FBI seizure, Hoover's handwritten note, the eighty trunks, the accounting gap
17 The Company That Proved Him Right Draft Tesla Motors, the AC induction car, inverters as VFDs, full torque from 0 RPM, why the Prius failed
Appendices
A Tesla's Patents: An Annotated List Planned The ~20 patents that matter — numbers, claims, what held up — linked to patents.google.com
B Experiments Index Planned Every experiment in one place: materials, difficulty, estimated cost, chapter reference
C Citations by Chapter Planned Full bibliography organized by chapter
D Debunking Index Planned 30 common Tesla myths with the actual evidence — the most shareable section of the book
E The FBI Files Complete Five key documents from File 100-2237; Hoover's handwritten note; QR codes to all 715 pages
Source Documents
Joe W. Kuefler — TESLA — Tangent
Draft — 2026-06-02