- NT (#00)
Nikola Tesla - portrait circa 1893. [Nikola Tesla in late 1893 or early 1894, age 37.
- NT (#01)
Nikola Tesla - portrait circa 1904.
- NT (#02)
Nikola Tesla - portrait circa 1920
- NT (#03)
Nikola Tesla standing outside his suite at the Hotel New Yorker. Circa 1934.
- NT (#04)
Nikola Tesla - portrait circa 1935.
"Declarations of Faith," New York American, 1932:
NIKOLA TESLA, acknowledged dean of American inventors, in a recent interview on his seventy-sixth birthday, reaffirmed his faith in the recuperative vitality of our old universe and proclaimed his enthusiastic belief in the tremendous possibilities of the future with such vigor and such ringing confidence as to shame the cowardly croakings of our modern Cassandras. . . .
("Have I missed the mark, or, like true archer, do I strike my quarry? Or am I prophet of lies, a babbler from door to door?" [Cassandra. Aeschylus, Agamemnon
1194])
- NF (#17)
The world's first commercial alternating current hydroelectric generators for the production of two-phase electrical power at the Edward Dean Adams Station, Niagara Falls. These generators (three of ten are shown) were built by the Westinghouse Electric Corporation after patents of Nikola Tesla and rated at 4,000 kilowatts each.
- NF (#18)
The nameplate on one of the Westinghouse alternating current generators installed at the Edward Dean Adams Station, Niagara Falls.
- NYH (#07)
Tesla's laboratory at 46 & 48 East Houston Street in New York City. Shown are various laboratory apparatus (note "Egg of Columbus" demonstration device at center). The laboratory is brilliantly illuminated with his high frequency lamps. Circa 1901.
- NYH (#06)
Tesla's laboratory at 46 & 48 East Houston Street in New York City, a few blocks south of Washington Square. The New York oscillator is shown in operation. A free standing primary loop and primary capacitors are to the left and rear with the secondary in the background to the right. Circa 1899.
- NYH (#05)
Tesla's laboratory at 46 & 48 East Houston Street in New York City. Shown is a demonstration of his system for the transmission of electrical energy through natural media - a view of his magnifying oscillation transformer in action. Actual width of space traversed by the luminous streamers issuing from the single circular terminal terminating the extra coil is over 16 feet; the area covered is approximately 200 square feet. Estimated pressure is 2 1/2 million volts, the safe limit for this laboratory. It was here that Tesla discovered extraordinary conductive properties of the atmosphere, and to pursue these investigations further he sought to establish an experimental station at a remote location where he would be unrestricted in producing vastly greater voltages. Circa 1896-1898.
- NY (#35)
Nikola Tesla's lecture "Experiments With Alternate Currents of Very High Frequency and Their Application to Methods of Artificial Illumination. This lecture on high-frequency lighting was presented before the American Institute of Electrical Engineers at Columbia College in 1891.
[NOT POSTED] NY Houston 005, Tesla In Lab
Nikola Tesla in his laboratory on Houston Street, New York City, showing his body, charged to a high potential by means of a coil responsive to the electromagnetic waves transmitted to it from a distant oscillator, and a long glass tube waved in his hand is lighted to great brilliance by the electrical charges conveyed to it through his body. May 1899.
- CS (#14)
Front view of the Colorado Springs experimental station, with Union Printers Home in background. A special coil wound for investigation of the influence of elevation upon the capacity of an elevated conductor is visible in front of the laboratory. 1899
- CS012, Tesla In Oscillator (#15; formerly #16)
Nikola Tesla seated inside a circular framework 51 feet in diameter, which supported the primary and secondary conductors of the largest Tesla coil ever built, at his Colorado Springs experimental station in 1899. The oscillator is operating at 100 khz, and the discharges occur with a deafening roar striking an unconnected, comparatively smaller diameter coil 20-22 feet away. The activity of the oscillator created earth currents of such magnitude that sparks an inch long could be drawn from a water main at a distance of 300 feet from the station. The inscription on the photograph is addressed to Sir William Crookes and reads; To my illustrious friend Sir William Crookes of whom I always think and whose letters I never answer. June 17, 1901 Nikola Tesla.
The special coil, 8 feet in length and 14 inches in diameter, wound for investigation of the influence of elevation upon the capacity of an elevated conductor, appears to the right in this interior view of the Tesla laboratory.
A classic photograph showing an electrical discharge passing from the giant oscillator's "extra coil" across to another coil on a vertical stand. The sparks are about 20 feet long in a straight line. The discharge was produced by 50 short successive closures of the switch, the experiment being performed in the dark. Then another exposure was made "with the illumination of an arc lamp and flash powder" with Tesla sitting in a chair. The human figure gives an idea of the magnitude of the discharge.
The inscription on the photograph addressed to Sir William Crookes reads, "To my illustrious friend Sir William Crooks of whom I always think and who's kind letters I never answer!" This is a classic photograph showing an electrical discharge passing from the giant oscillator's "extra coil" across to another coil on a vertical stand. The sparks are about 20 feet long in a straight line. The discharge was produced by 50 short successive closures of the switch, the experiment being performed in the dark. Then another exposure was
made "with the illumination of an arc lamp and flash powder" with Tesla sitting in a chair. The human figure gives an idea of the magnitude of the
discharge.
- CS (#10)
Tesla's experimental station at Colorado Springs. Shown is the extra coil discharging from a brass ring at its top to which thin wires, pointing upward, are fastened. The sparks pass upward to a metal hood fastened to the base of the tower. When operating in this fashion the coil produces the effect of a hot furnace, creating a strong current of air through the open roof. 1899.
- CS (#13)
A rare shot of the second large Colorado Springs oscillator in an early stage of development.
- CS (#08)
Tesla's experimental station at Colorado Springs. View of the interior, showing oscillator components including condensers, break motor and regulating coil in the primary circuit. Westinghouse high tension transformer, supply transformers and lightning arresters in background. December 1899.
- CS (#09)
Tesla's experimental station at Colorado Springs. Interior closeup, of oscillator components including condensers, regulating coil, and Westinghouse high tension transformer. December 1899.
- CS (#12)
One of Tesla's assistants posed at the variable-inductance crank in the primary circuit of the large Colorado Springs experimental station oscillator (1899). The primary winding was a heavy, two turn, multi-strand cable 50 feet in diameter. Note the long insulated handle on the crank. - Photo by Carl Duffner
- CS (#11)
Tesla's experimental station at Colorado Springs. Shown is an ante room off the main experimental area. An X-ray photographic cabinet can be seen on the table, and underneath the table an electric heater. It should be pointed out that this was the only source of heat in the cold winter days from October to January 1900 when Tesla returned to New York City. 1899.
- WP001 (#17)
An ethereal rendering of Tesla's Wardenclyffe plant.
- WP010 (#20)
Tesla's behemoth tower, to be used for trans-Atlantic wireless communications and the demonstration of wireless power transmission, was erected in 1901 at Wardenclyffe (now Shoreham) on Long Island. Built almost entirely of wood, with a 55-ton skeleton spheroid of steel at the top, it was designed so that every spar could be taken out at any time and replaced if necessary. Photo by Lillian McChesney, circa 1916.
- WP003 (#19)
Tesla's Wardenclyffe plant on Long Island in partial stage of completion. Work on the 55-foot diameter cupola had not yet begun. Note what appears to be a coal car parked next to the building. From this facility, Tesla hoped to demonstrate wireless transmission of electrical energy to France. Circa 1902.
- WP016
Tesla's Wardenclyffe plant on Long Island Side view showing the building and tower.
- WP004 (#22)
Interior view of Tesla's Wardenclyffe plant showing various electrical apparatus, including the large telautomaton, "Egg of Columbus," and various transformers. Circa 1902.
- WP005 (#23)
Interior view of Tesla's Wardenclyffe plant showing various electrical apparati, including a tuning table, two-phase dynamo, various transformers, and large spiral coil. The telautomaton and "Egg of Columbus" are in background. Circa 1902.
- WP019
Wardenclyffe plant, experimental area side. Circa 1905.
- WP018 (#24)
Interior view of Tesla's Wardenclyffe laboratory. Circa 1912.
- WP014 (#21)
Interior view of Tesla's Wardenclyffe plant on Long Island. The workshop area is shown. Circa 1903.
- WP015
A photograph taken in the Wardenclyffe plant generator room showing a 200 kilowatt, 3-phase direct-connecting Westinghouse alternating current generator. It was driven by a Westinghouse auto compound engine No.1497, 16 x 27 x 16 feet.
- WP028
Base of tower at Tesla's Wardenclyffe plant on Long Island after removal of tower. Note the opening of the large conduit that ran from the laboratory building to the 120-foot tower shaft, one of two installed to carry electric and hydraulic mains.
- WP024
Remains of the Tesla Wireless Tower Base at the Wardenclyffe plant on Long Island after removal of tower. It appears the shaft's wooden shoring has given way, allowing the surrounding soil to be washed into the hole. In this photo the undercut portion of the concrete foundation is in the process of collapse.
- WP025
Remains of the Tesla Wireless Tower Base at the Wardenclyffe plant on Long Island after removal of tower. Much of the surrounding soil has collapsed into the central shaft and a large portion of the unsupported concrete foundation has either fallen into the pit or been removed.
- TRX001 (#25)
A U.S. Navy shipboard transmitter manufactured by the Lowenstein Radio Company, licensed under 6 of Nikola Tesla's patents. This five kilowatt set, capable of 1,500-mile transmission, was used during WW1.
[NP] TRX002
- TRX010 (#27)
Tesla's Static Eliminator -- a variable coupling radio-frequency transformer.
- TRX011 (#28)
Tesla's Static Eliminator -- a variable coupling radio-frequency transformer.
- TTM (#29)
Model of a pump used by Tesla to demonstrate his invention of a new mechanical principle for the transfer of energy between the working circuit and fluids. The pump, with a working circuit diameter of 3 inches, was driven by an electric motor of 1/12 horsepower and could lift 40 gallons of water (per minute) to a height of 9 feet.
- TTM (#30)
One of Tesla's experimental turbine-generators.
- TTM (#31)
Blower designed by Tesla, manufactured by the American and British Manufacturing Company, and sold to the Corliss Steam Engine Works foundry in Providence, R.I., placed into service November 1909. "The blower is driven by a 75 HP #8-B 'HF' frame motor, three-phase, 220 volts, 60 cycle, 2-pole, with starter." (From Westinghouse letter dated June 28, 1909.) The machine operated at approximately 3,400 RPM.
- TTM (#32)
"Tesla's turbo-generator" -- Tesla Museum, Belgrade, Serbia.
- TTM (#33)
"Tesla's turbo-generator" -- Tesla Museum, Belgrade, Serbia.
- TTM (#34; #33)
A turbo-generator for a locomotive headlight designed by Tesla for the Pyle National Company, Chicago, where it was manufactured and tested. Tesla would call this type of device, "a lighting machine on novel principles."
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