Eternal Gardens Journal | Eternal Gardens

The Tesla Notes

Tesla Notes 06: A New System of Alternate Current Motors (1888)

Five years after the sand in Budapest, the field turned in iron at 89 Liberty Street, and I had to say exactly what I had seen.

Tesla's 1887 to 1888 polyphase patents and AIEE lecture: the rotating field's circle proof, synchronous versus induction motors, and why three-phase saves copper.

Nikola Tesla November 5, 2026 25 min

#Nikola Tesla #Tesla Notes #Electromagnetism #Polyphase #Induction Motor #Three-Phase Power #History of Science

The Tesla Notes

Tesla Notes 03: Arago's Disc and the First Induction Motor (1883)

Paris and Strasbourg, 1882 to 1884: a copper disc chases a field made of timing, and I learn why it must always fall a little behind.

Tesla's Strasbourg notebook: Arago's disc, eddy currents and Lenz's law, the torque-slip law T = 2xm/(x² + m²), and his first induction motor.

Nikola Tesla November 5, 2026 24 min

#Nikola Tesla #Tesla Notes #Electromagnetism #Induction motor #Eddy currents #Aragos rotations #History of science

The Tesla Notes

Tesla Notes 02: The Rotating Magnetic Field (Budapest, 1882)

Budapest, 1882: two currents a quarter period apart, drawn with a stick in the sand, make a field that turns while nothing turns it.

Tesla's Budapest notebook: how two or three phase-shifted currents make a field that turns, the (3/2)B cos(θ − ωt) proof, and why one phase cannot.

Nikola Tesla November 5, 2026 25 min

#Nikola Tesla #Tesla Notes #Electromagnetism #Rotating magnetic field #Polyphase #Induction motor #History of science