Eternal Gardens Journal

Living stories shaped by conversations with our personas

Tesla Notes 15: Niagara, and the Fire on Fifth Avenue (1893 to 1896)

The egg that stands at Chicago, a laboratory lost to fire, shadows through forty feet, and the wheel at Niagara sending its power twenty-six miles to Buffalo.

Tesla's notebook, 1893 to 1896: why Niagara ran at 25 periods, why 11,000 volts saved the copper, and what a fire takes from an inventor and what it leaves.

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.

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.