File:San Francisco, Farnsworth's Green Street Lab plaque.jpg
Original file (3,487 × 3,168 pixels, file size: 5.23 MB, MIME type: image/jpeg)
This is a file from the Wikimedia Commons. The description on its description page there is shown below.
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This is a photo of a place or building that is listed on the California Historical Landmark listing in the United States. Its reference number is 941.
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Summary
DescriptionSan Francisco, Farnsworth's Green Street Lab plaque.jpg |
English: Plaque on Green Street in San Francisco dedicated to Philo Farnsworth. The text reads as follows:
FARNSWORTH'S GREEN STREET LAB In a simple laboratory on this site, 202 Green Street, Philo Taylor Farnsworth, U.S. pioneer in electronics, invented and patented the first operational all- electronic television system on September 7 1927. The 21-year-old inventor and several dedicated assistants successfully transmitted the first all-electronic television image, the major breakthrough that brought the practical form of this invention to mankind. Further patents formulated here covered the basic concepts essential to modern television. The genius of green street, as he was known, died in 1971. California registered historical landmark no. 941 Plaque placed by the state department of parks and recreation in cooperation with the Philo Farnsworth Foundation, Inc., September 15, 1981.Polski: Tablica upamiętniająca pioniera telewizji Philo Farnswortha przy ulicy Green Street w San Francisco. |
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Licensing
Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.http://www.gnu.org/copyleft/fdl.htmlGFDLGNU Free Documentation Licensetruetrue |
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This photo of the United States of America was taken during Wikiexpedition 2012 USA backed up by Wikimedia Polska Association. You can see all photographs in category Wikiekspedycja 2012 USA. English | polski | +/− |
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25 April 2012
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Date/Time | Dimensions | User | Comment | |
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current | 06:38, 19 May 2012 | 3,487 × 3,168 (5.23 MB) | CLI |
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Camera manufacturer | SONY |
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Camera model | DSLR-A580 |
Author | Adam Kliczek (CLI) / Wikimedia Commons |
Copyright holder | CC BY-SA 3.0 |
Exposure time | 1/160 sec (0.00625) |
F Number | f/5.6 |
ISO speed rating | 400 |
Date and time of data generation | 01:44, 25 April 2012 |
Lens focal length | 55 mm |
Horizontal resolution | 240 dpi |
Vertical resolution | 240 dpi |
File change date and time | 03:21, 19 May 2012 |
Exposure Program | Aperture priority |
Date and time of digitizing | 01:43, 25 April 2012 |
APEX shutter speed | 7.321928 |
APEX aperture | 4.970854 |
APEX brightness | 5.37 |
APEX exposure bias | 0 |
Maximum land aperture | 4.34 APEX (f/4.5) |
Metering mode | Pattern |
Light source | Daylight |
Flash | Flash did not fire, compulsory flash suppression |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Manual white balance |
Focal length in 35 mm film | 82 mm |
Scene capture type | Standard |
Contrast | Normal |
Saturation | Normal |
Sharpness | Normal |