PART II. THE TESLA EFFECTS WITH HIGH FREQUENCY AND HIGH POTENTIAL CURRENTS.
Introduction.—The Scope of the Tesla Lectures.
Experiments with Alternate Currents of High Potential and High Frequency. [2]
On Light and Other High Frequency Phenomena. [3]
Tesla Alternating Current Generators for High Frequency, in Detail.
Alternate Current Electrostatic Induction Apparatus. [6]
"Massage" With Currents of High Frequency. [7]
Electric Discharge in Vacuum Tubes. [8]
PART III. MISCELLANEOUS INVENTIONS AND WRITINGS.
Method of Obtaining Driect From Alternating Currents.
Condensers with Plates in Oil.
Electrolytic Registering Meter.
Thermo-Magnetic Motors and Pyro-Magnetic Generators.
Anti-Sparking Dynamo Brush and Commutator.
Auxiliary Brush Regulation of Direct Current Dynamos.
Improvement in the Construction of Dynamos and Motors.
Tesla Direct Current Arc Lighting System.
Improvement in "Unipolar" Generators.
PART IV. APPENDIX.—EARLY PHASE MOTORS AND THE TESLA MECHANICAL AND ELECTRICAL OSCILLATOR.
Mr. Tesla's Personal Exhibit at the World's Fair.
The Tesla Mechanical and Electrical Oscillators.
PART I.
POLYPHASE CURRENTS.
CHAPTER I.
Biographical and Introductory.
As an introduction to the record contained in this volume of Mr. Tesla's investigations and discoveries, a few words of a biographical nature will, it is deemed, not be out of place, nor other than welcome.
Nikola Tesla was born in 1857 at Smiljan, Lika, a borderland region of Austro-Hungary, of the Serbian race, which has maintained against Turkey and all comers so unceasing a struggle for freedom. His family is an old and representative one among these Switzers of Eastern Europe, and his father was an eloquent clergyman in the Greek Church. An uncle is to-day Metropolitan in Bosnia. His mother was a woman of inherited ingenuity, and delighted not only in skilful work of the ordinary household character, but in the construction of such mechanical appliances as looms and churns and other machinery required in a rural community. Nikola was educated at Gospich in the public school for four years, and then spent three years in the Real Schule. He was then sent to Carstatt, Croatia, where he continued his studies for three years in the Higher Real Schule. There for the first time he saw a steam locomotive. He graduated in 1873, and, surviving an attack of cholera, devoted himself