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1897
Tesla Oscillator Reproductions
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Large
1897 Oscillator Reproduction |
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Tesla's 1897 Unipolar
X-Ray Tube Experiment
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Prototype
Flaming White Arc Coil
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Behary
Flaming White Arc Coil
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Flaming
Arc Stills Gallery
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St. Elmos
Fire Gallery
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Saint Elmo's Fire 27 Feb 2005 |
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Bipolar St. Elmos
Fire Gallery
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Behary
d'Arsonval Coil Reproduction:
Battery Operated Tesla Coil |
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Tesla
Lecture Reproduction: Discharges
Through 2" Plate Glass |
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Behary-Kinraide-Jackson
Coil Reproduction
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Behary-Kinraide-Jackson
Discharges |
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Early
Prague Coil Testing
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Pre-Installation
Of Prague Coil
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Prague
Coil In Operation Gallery
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Physician's
Cabinet
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9"
Pancake Coil Gallery
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Thomas
Stanley Curtis Kicking Coil Reproductions
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50W
Baby Prague Coil
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Kicking
Coil Apparatus
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Bipolar
Kicking Coil Gallery
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Special
Interrupters For Induction/Kicking Coils
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Rochefort-Wydts
Experiments
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Large
Pancake Coil Winding Jig
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Pancake
Magnifier System
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Details
Of Pancake Coil Construction
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Misc.
Pancake Photos
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Behary
Style Tesla Coils
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Behary
Misc.
Items |
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Behary
Style Spark Gaps
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Tesla
Coil Schematics
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Updates from 2006: |
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Prototype
Strong-Ovington Apparatus:
Dr. Strong's Condenser Terminal's! |
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Prototype Strong-Ovington Apparatus
Testing Phase I... |
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Christmas
Coils for Brian and Frank (and Jeff)
Secondary Coil for Strong-Ovington Apparatus |

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Curious
Zig-Zag Discharges... |
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Adjustable Frequency Tesla Coil Power Supply
Testing a 16" Pancake Coil Galleryl
Movie 1 - Flat Spiral Coil - 16" Diameter
Movie 2
- Flat Spiral Conical Coil - 14" Diameter
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Flat
Spiral To Conical Coil - Testing a
Modified Form of Kinraide "Jackson Coil" |
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A Selection
Of Early Tesla Coils and
Cross Sections Of Pancake Coils |
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Frank and his
amazing Tesla Lamps! |
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Complete Half Size Tesla Induction Coil:
An interesting look at a classic forgotten
Tesla Coil design. |
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22 October 2006
Weekend Projects:
Floor Model Pancake Tesla Coil,
1890s Tesla High Frequency Induction Coil,
Prototype Flaming Arc Twin Pancake Coil |
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Half-Size Tesla Induction Coil
A bipolar Pancake Coil with the primary coil on the
inside. Each half of the primary has 25 turns, each
secondary coil has 120 turns. Discharge is over 4". |
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Happy Birthday
Nikola Tesla!
Long Island New York Photos! |
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Tesla "Pancake
Coils":
Redefining Tesla Technologies |
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Arcing
Pancakes - Testing Phase I
Machined from scratch in two days...a bipolar Tesla /
Kinraide Coil modified for low voltage high current
outputs. |

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Kinraide Reproduction Electrode:
Point / Limitless Plane Electrode
In particular, note the following discharges:
TCFSparks1: Point is even with the surface of the plane
TCFSparks2: Point is retracted inside of plane
TCFSparks3: Point is protruding from plane |
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Huge Quenched
5-Series Spark Gap |
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Campbell D
Restoration: Cast Knobs |
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Electrotherapy
Museum Name Plates |
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Gigantic
16-Series Quenched Spark Gap |
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August 2006
Sparks
Rita is away so I made some noise and photographed
the two Tesla Coils below in action at night... |
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8" Twin
Pancake Tesla Coil
Operated with a 10kV 23mA Neon/OBIT Transformer,
.01 Mica Transmitting Capacitor, and 4-Series
Reproduction Osborn Spark Gap (originally made by
H. G. Fischer for Thompson Plaster Cabinets) |
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7" Twin
Pancake Tesla Coil with 2900 BPS
Rotary Break - 50-100W, 9" maximum
discharges! |
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Movie of Twin Pancake Tesla Coil |
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100 Watt Twin
Pancake Tesla Coil
with Rotary Spark Gap - 8" Discharges! |
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Pancake Tesla Coil Operated with Carpentier Style
Interrupter: Electric Autographs
This coil was producing snake-like strobing negative discharges
4-5" long, interposed with very distinct branching positive discharges 3" long.
Current consumption: 100 watts at 110VAC. |
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4th of July Fireworks Kinraide Style:
Electric Discharges: Snakelike Streamers &
Branching Discharges
1.
On 8x10 Paper
2. On X-Ray Film |
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Lichtenberg Figures in Crookes vacuum
These figures are unfortunately unclear due to the near
impossible circumstances of trying to photograph them -
they were created using a burned out Edison bulb with
a straight filament. The filament heavily bombarded
was spinning around the tube, and when it hit the glass
formed rapid moving Lichtenberg Figures.
1.
Images
2. Movie |
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Gaiffe
Gallot Mercury Interrupter
Frank found a real gem here! He won't tell me when he gets
it up and running, because he knows I'll fly there and will never leave!! |
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Figure 1:
Tesla Oscillator
For Experimental Use |
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Tesla Patent
583,593: Electric Circuit
Controller that charges the condensers
in parallel and discharges them in series |
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Figures 4
& 7: Misc. Tesla Oscillators
with mechanical breaks |
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Tesla Oscillator for Ignition Purposes:
Patent 609,250
A Tesla Coil for igniting gas engines - a "Tesla" ignition
coil. |
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Tesla
Oscillator with Mercury Interrupter:
Patent 609,248
This patent utilizes a liquid-to-liquid "make", with
an insulating
disk used to separate the liquids for the "break" duration. |
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Tesla
Oscillator with Mercury Interrupter:
Patent 609,247
This patent utilizes liquid-to-solid interruptions of a
centrifugal ribbon of mercury to make and break contact
with a fan blade. |
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Tesla Oscillator with Mercury Interrupter:
Patent 609,251
It's not perfect, but these still took forever to draw! |
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Tesla Oscillator For Producing Ozone
Here are some 3D renderings I made of a famous Tesla Coil. |
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18"
Flat Spiral Coils
A weekend outdoors: making coils and entertaining the
cat. |
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Powerstats!
We've recently acquired 3 large 3-phase variable
transformers. ("Variacs" type transformers, manufactured by Powerstat)
Divided they form 3 single phase autotransformers. We need only
1 unit, the other two are FOR SALE! |
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Reproduction Thompson Plaster Spark Gaps
These gaps are unique in that they are stationary,
yet adjustable through the use of a sliding arm that short circuits
the number of gaps not wanted in the circuit. They are ideal for
voltages from 3,500 - 25,000V or more. |
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Virtual
Reproduction Thompson Plaster Spark Gap |
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High
Energy Research Acquisitions...
1000 pounds of new components...including a massive
570 pound 25kV capacitor (.046 mfd - .460 mfd); an electro-
magnet with a 7.5" diameter x 24" tall core; some rather
unique d'Arsonval Coils... |
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Testing an
18" Pancake Coil
9600V 120mA Transformer; .046 mfd Condenser; 5-series
1/2" Tungsten Spark Gap; 18" OD 4" ID Pancake Coil:
One turn per layer, 21 AWG wire.
Movie:
Testing Phase I
Movie:
Testing Phase II
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Violet Ray Coil Yielding 3-4" Sparks?!
With a normal Master Violet Ray Coil (operating under oil) I was able to get
3-4" sparks using my special adjustable condenser circuit. |
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3"
Pancake Coil Testing:
Produces 2" - 4" Flaming Discharges.
Film of discharges (2.5 MB)
Film of "Dancing, Bursting Effluves"
and Flaming Discharges |
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Updates from 2007: |
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15kV
Single Pancake Coil Test |
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15kV
Bipolar Pancake Coil Test - 12"+ Discharges |
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From the family
archive of Thomas Stanley Curtis! |
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Negative
Discharges from Primary Coil to Tesla Ball Terminal |
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Thomas
Stanley Curtis Reproduction - Small Oudin Resonator
Solid bakelite slab and simple handmade form. |
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Thomas Stanley Curtis Reproduction - A Classic Oudin Resonator
Produces a 12" discharge. Made with hard woods, marble, silk-covered
wire, bakelite, brass, ... the old-fashioned way! |
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Schematic of Tesla Coil For Producing Electric Phenomena
(Specifically designed for Pancake Coils) |
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Thomas Stanley
Curtis Oudin Coil Reproduction
The most impressive cylindrical- secondary table-top Tesla Coil I
have ever seen! |
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Solid State Low
Voltage Tesla Coil :)
Okay not really. A spark gap Tesla Coil
operating with only a 240V transformer! |
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Phantom
Streamers and Oscillatory Negative Discharges made
with a Tesla Coil using a wax-insulated output terminal |
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4" Pancake
Coil for producing "Phantom Streamers" |
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Electrograph
Showing Negative "Phantom" Streamers:
Faint discharges can be seen at the ends of the sparks extending
outward a distance of several inches |
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Original Kinraide Coil Test - Bipolar Arrangement |
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Original Kinraide Coil Test |
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A dedication to
Thomas Stanley Curtis!
2KW Bipolar Wireless/X-Ray Tesla Coil tests... |
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Quenched
Spark Gap Tests with Oudin Resonator |
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3/4"
Tungsten Dual Quenched Spark Gap
"Stationary-Adjustable" Spark Gap
1.25" Diameter Tungsten Quenched Spark Gap #2
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1.25" Diameter Tungsten Spark Gap!
Quenched Gap mounted to 6" aluminum heat sinks! |
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Bipolar Pancake Coil: Using a Plate Capacitor for an
Adjustable Top Load |
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Eight
Series Adjustable Binary Spark Gap:
From .001" - .254" in .001" increments! |

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The
Tesla High Frequency Coil: Its Construction And Uses (1910)
By: George F. Haller and Elmer Tilling Cunningham
Virtual 12" Feature Tesla Coil
(I
decided to do a 3D rendering of this coil until I get the chance to
actually build it...) |
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Testing a
Prototype 9" Pancake Coil with Rotary Spark Gap: Under Oil |
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Testing a
Prototype 9" Pancake Coil with a Rotary Spark Gap |
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How to wind a
simple form of Pancake Coil. |
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Photos of Pancake
Coil constructions and apparatus... |
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9" Pancake
Coil Test |
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Pancake Coil
efficiency debate: To the Tesla List |
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Tesla Inspired
Induction Coil: 2" hot flames from a Model T Coil ran
directly from 220/240V mains! No electronic ignition here! No circuit
board! No
soldering! No transistors!! |
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Transformer-less
Spark Gap Tesla Coil operated directly from 220/240V
mains! Its possible - and here is proof and movie! |
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Weekend
projects:
"Fitzgerald Pancake Coil": 8 Watt Tesla Coil giving 2 - 4" sparks!
Viracorp Violet Ray, Renulife Model K Violet Ray |
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My
reproduction 1897 Tesla Oscillator has a new home
in Frank's collection! |
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Kilowatt
Pancake Coil stills |
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Homebrew Pancake
Coil for Tesla Coil builders |
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"White Coils":
Pancake Coils for 12"+ discharges |
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15 kV
Pancake Coil tests - round one.
Effluves and ionizations... |
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And sometimes
they just SING! 9" discharges from a
9" Pancake Coil. |
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Gas Flame-like
Discharge Experiments:
Curious effects of a 9" coarse wire Pancake Coil. |
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20V Tests:
Operating a Tesla Coil (with a spark gap!)
at low voltage, less than 200 volts on the output of the
(normally 1000V) high voltage transformer!
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Testing a 3"
Pancake Coil. A Pancake Coil built of modern
materials: PVC, Drywall Seam Tape, Wax Toilet Rings,
Brass Tubing, and a 1.5" Steel Ball Bearing! |
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Electrical Discharge Phenomenon Created With Tesla Coils
(At Normal Atmospheric Pressures)
Chapter 1: Prelude: Photographs 2004 - 2006 |
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Low power Tesla Coil experiments:
Static Discharges from a Pancake Coil:
Electrostatic Charging of Cardboard tube with Tesla Coil |
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Movie: Thomas Burton Kinraide Reproduction:
Extension-Less Point - Limit-less Plane Spark Gap
with 14" Pancake Coil
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Reproduction Kinraide Spark Gap:
"Extension-less Point - Limitless Plane Gap" |
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Kinraide Static Electric Tests...
Partial Static Electricity from a Tesla Coil |
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Kilowatt Kinraide Coil Flames |
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Kinraide-Jackson Brush Discharges |
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Kinraide-Jackson Wispy Discharges |
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Neon
Pancake Discharges |
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Rotary Spark Gap Pancake Coil Discharges |
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Strong-Ovington Arcs Sparks and Flames |
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Strong-Ovington Disk Effluves |
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Strong-Ovington Ladder of Sparks |
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Strong-Ovington Press Photos |
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Strong-Ovington High Resolution Photo |
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New Years Eve - 2007
Fireworks of a different sort. |
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Griffith Park
Tesla Coil and Reproductions:
Just some of the brilliant work of Bill Wysock |
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Complete
Strong-Ovington Demo Apparatus |
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Prototype
Strong-Ovington Apparatus:
Dr. Strong's Condenser Terminal's! |
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Complete Half Size Tesla Induction Coil:
An interesting look at a classic forgotten
Tesla Coil design. |
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