File:Kristallradio (3).jpg
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[edit]DescriptionKristallradio (3).jpg |
Svenska: Kristallmottagare, kristallen och avkännaren av märke "Ideal" D.R.P. (Deutsches Reichs Patent)
English: Cat's whisker detector, an antique radio component, from a Swedish crystal radio receiver. It consists of a fine wire attached to an adjustable arm that touches the surface of a crystal of galena (lead sulfide). It was used in crystal radios from about 1906 to World War 2. It functioned as a crude semiconductor diode, rectifying the AC radio signal to extract the audio (sound) signal from the radio frequency carrier wave. |
Date | |
Source | Own work |
Author | Holger.Ellgaard |
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[edit]I, the copyright holder of this work, hereby publish it under the following license:
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 16:19, 25 October 2021 | 1,306 × 922 (262 KB) | Holger.Ellgaard (talk | contribs) | colour | |
15:55, 28 December 2008 | 1,375 × 975 (252 KB) | Holger.Ellgaard (talk | contribs) | {{Information |Description={{sv|1=Kristallmottagare, kristallen och avkännaren D.R.P. (Deutsches Reichs Patent)}} |Source=Uppladdarens egna verk (uploader's own work) |Author=Holger.Ellgaard |Date=2008 |Permission=yes |other_vers |
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Metadata
This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.
Camera manufacturer | NIKON |
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Camera model | COOLPIX S51 |
Exposure time | 1/80 sec (0.0125) |
F-number | f/3.3 |
ISO speed rating | 100 |
Date and time of data generation | 18:45, 28 December 2008 |
Lens focal length | 6.3 mm |
Orientation | Normal |
Horizontal resolution | 300 dpi |
Vertical resolution | 300 dpi |
Software used | ArcSoft PhotoStudio |
File change date and time | 18:19, 25 October 2021 |
Y and C positioning | Co-sited |
Exposure Program | Normal program |
Exif version | 2.2 |
Date and time of digitizing | 18:45, 28 December 2008 |
Meaning of each component |
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Image compression mode | 4 |
APEX exposure bias | 0 |
Maximum land aperture | 3.4 APEX (f/3.25) |
Metering mode | Pattern |
Light source | Unknown |
Flash | Flash did not fire, compulsory flash suppression |
Supported Flashpix version | 1 |
Color space | sRGB |
File source | Digital still camera |
Scene type | A directly photographed image |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Digital zoom ratio | 1 |
Focal length in 35 mm film | 38 mm |
Scene capture type | Standard |
Scene control | Low gain up |
Contrast | Normal |
Saturation | Normal |
Sharpness | Normal |
Subject distance range | Unknown |