File:Tesla coil at Griffith Observatory LA.jpg
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Size of this preview: 426 × 599 pixels. Other resolutions: 171 × 240 pixels | 341 × 480 pixels | 546 × 768 pixels | 728 × 1,024 pixels | 1,456 × 2,048 pixels | 3,152 × 4,432 pixels.
Original file (3,152 × 4,432 pixels, file size: 3.71 MB, MIME type: image/jpeg)
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Summary
DescriptionTesla coil at Griffith Observatory LA.jpg |
English: Large Tesla coil on display at Griffith Observatory in Los Angeles, CA. The coil itself is 48 in. high, 36 in. diameter at base narrowing to 18 in. diameter at top, with a 12 in. ball capacitive electrode mounted on top. This well-known coil is one of the oldest entertainment Tesla coils still in use. It was originally one of a pair of identical coils built in 1910 by Earle Ovington a manufacturer of high voltage medical coils who was a friend of Nikola Tesla. They were first displayed at the December Electrical Show at Madison Square Garden, New York City. At the show they were billed as the "Million Volt Oscillator". Installed in the balcony, on every hour the lights in the hall would dim for a spectacular display of 10 foot sparks between the two coils. Ovington gave the coils to Dr. Frederick Finch Strong, an occultist and one of the most well known proponents of electrotherapy, who used them to treat illnesses in his patients. In 1937 Strong donated them to the Griffiths Museum of the city of Los Angeles. The museum didn't have room to display them both and sold one of the coils. The other one, above, has been in continuous use ever since. It was estimated by a General Electric engineer that it produces 1.2 million volts. |
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This image, originally posted to Flickr, was reviewed on 15 November 2015 by the administrator or reviewer Rodrigolopes, who confirmed that it was available on Flickr under the stated license on that date. |
Licensing
This file is licensed under the Creative Commons Attribution-Share Alike 2.0 Generic license.
- You are free:
- to share – to copy, distribute and transmit the work
- to remix – to adapt the work
- Under the following conditions:
- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
- share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
This image, originally posted to Flickr, was reviewed on 15 November 2015 by the administrator or reviewer Rodrigolopes, who confirmed that it was available on Flickr under the stated license on that date. |
Items portrayed in this file
depicts
11 May 2012
0.16666666666666666666 second
3.5
18 millimetre
800
image/jpeg
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 23:34, 14 November 2015 | 3,152 × 4,432 (3.71 MB) | Chetvorno | {{Information |Description=Hollywood: Tesla Coil at Griffith Observatory |Source=[https://www.flickr.com/photos/elisfanclub/7186077858/ Hollywood: Tesla Coil at Griffith Observatory] |Date=2012-05-11 19:24 |Author=[https://www.flickr.com/people/8054727... |
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Metadata
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Camera manufacturer | Canon |
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Camera model | Canon EOS REBEL T1i |
Exposure time | 1/6 sec (0.16666666666667) |
F-number | f/3.5 |
ISO speed rating | 800 |
Date and time of data generation | 19:24, 11 May 2012 |
Lens focal length | 18 mm |
Orientation | Normal |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Software used | GIMP 2.6.12 |
File change date and time | 07:49, 14 November 2015 |
Exposure Program | Aperture priority |
Exif version | 2.2 |
Date and time of digitizing | 19:24, 11 May 2012 |
Meaning of each component |
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Shutter speed | 2.625 |
APEX aperture | 3.625 |
Exposure bias | −1 |
Maximum land aperture | 3.5635948210206 APEX (f/3.44) |
Metering mode | Pattern |
Flash | Flash did not fire, compulsory flash suppression |
DateTime subseconds | 78 |
DateTimeOriginal subseconds | 78 |
DateTimeDigitized subseconds | 78 |
Supported Flashpix version | 1 |
Color space | sRGB |
Focal plane X resolution | 5,315.4358974359 |
Focal plane Y resolution | 5,342.3269230769 |
Focal plane resolution unit | inches |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Scene capture type | Standard |