File:Titanic's Marconi appartus.jpg
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Summary[edit]
DescriptionTitanic's Marconi appartus.jpg |
English: A replica of the radio room on the ocean liner RMS Titanic which hit an iceberg and sank on its maiden voyage 15 April 1912. An SOS distress signal sent from this room summoned a nearby ship, the RMS Carpathia, which saved 705 of the survivors. Two men employed by the Marconi Company worked in this small windowless room near the bridge. Their main job was to receive and send messages by radio waves using Morse code. Little did they know they would soon be tapping out one of the first SOS signals from a ship in distress. The radio apparatus during the wireless telegraphy or "spark" era before 1920 was primitive; a spark-gap transmitter which transmitted information by the operator tapping on a telegraph key to spell out messages in Morse code, and a weak unamplified crystal radio receiver. |
Date | |
Source | https://www.flickr.com/photos/nostri-imago/3278643769/in/photostream/ |
Author | Cliff1066 |
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This image was originally posted to Flickr by cliff1066™ at https://www.flickr.com/photos/28567825@N03/3278643769. It was reviewed on 13 May 2010 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-2.0. |
13 May 2010
Annotations InfoField | This image is annotated: View the annotations at Commons |
Magnetic detector, part of receiver, produced an audible tone from the pulses of radio waves, making the "dots" and "dashes" of Morse code audible as beeps in the earphones
Magnetic detector for receiver
Induction coil provides power to transmitter
Telegraph keys for transmitting messages
Pneumatic tube delivers written messages to operator from bridge
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 12:29, 13 May 2010 | 1,600 × 1,067 (342 KB) | Jérémy-Günther-Heinz Jähnick (talk | contribs) | {{Information |Description={{en|1=Two men employed by the Marconi Company worked in this small windowless room near the bridge. Their main job was to receive and send messages by radio waves using Morse code. Little did they know they would soon be tappin |
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Metadata
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Camera manufacturer | Canon |
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Camera model | Canon EOS 5D |
Exposure time | 1/60 sec (0.016666666666667) |
F-number | f/4 |
ISO speed rating | 400 |
Date and time of data generation | 09:34, 12 February 2009 |
Lens focal length | 41 mm |
Orientation | Normal |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Software used | ACD Systems Digital Imaging |
File change date and time | 13:22, 14 February 2009 |
Y and C positioning | Centered |
Exposure Program | Not defined |
Exif version | 2.21 |
Date and time of digitizing | 09:34, 12 February 2009 |
APEX shutter speed | 6 |
APEX aperture | 4 |
APEX exposure bias | 0 |
Metering mode | Pattern |
Flash | Flash fired, compulsory flash firing |
DateTime subseconds | 890 |
Color space | sRGB |
Focal plane X resolution | 3,086.925795053 |
Focal plane Y resolution | 3,091.2951167728 |
Focal plane resolution unit | inches |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Scene capture type | Standard |