File:William Thomson, 1st Baron Kelvin OM, GCVO, PC, PRS, PRSE (26 June 1824 – 17 December 1907) (14576403736).jpg
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[edit]DescriptionWilliam Thomson, 1st Baron Kelvin OM, GCVO, PC, PRS, PRSE (26 June 1824 – 17 December 1907) (14576403736).jpg |
William Thomson, 1st Baron Kelvin OM, GCVO, PC, PRS, PRSE (26 June 1824 – 17 December 1907), was an Irish and British mathematical physicist and engineer who was born in Belfast in 1824. At the University of Glasgow he did important work in the mathematical analysis of electricity and formulation of the first and second laws of thermodynamics, and did much to unify the emerging discipline of physics in its modern form. He worked closely with mathematics professor Hugh Blackburn in his work. He also had a career as an electric telegraph engineer and inventor, which propelled him into the public eye and ensured his wealth, fame and honour. For his work on the transatlantic telegraph project he was knighted by Queen Victoria, becoming Sir William Thomson. He had extensive maritime interests and was most noted for his work on the mariner's compass, which had previously been limited in reliability. Absolute temperatures are stated in units of kelvin in his honour. While the existence of a lower limit to temperature (absolute zero) was known prior to his work, Lord Kelvin is widely known for determining its correct value as approximately −273.15 Celsius. |
Date | |
Source | William Thomson, 1st Baron Kelvin OM, GCVO, PC, PRS, PRSE (26 June 1824 – 17 December 1907) |
Author | William Murphy from Dublin, Ireland |
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This image was originally posted to Flickr by infomatique at https://flickr.com/photos/80824546@N00/14576403736. It was reviewed on 21 February 2022 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-sa-2.0. |
21 February 2022
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Camera manufacturer | SONY |
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Camera model | NEX-7 |
Author | William Murphy |
Copyright holder |
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Exposure time | 1/80 sec (0.0125) |
F-number | f/7.1 |
ISO speed rating | 100 |
Date and time of data generation | 11:08, 24 June 2014 |
Lens focal length | 23 mm |
Label | Yellow |
Horizontal resolution | 300 dpi |
Vertical resolution | 300 dpi |
Software used | Adobe Photoshop Lightroom 5.5 (Macintosh) |
File change date and time | 20:46, 7 July 2014 |
Exposure Program | Normal program |
Exif version | 2.3 |
Date and time of digitizing | 11:08, 24 June 2014 |
APEX shutter speed | 6.321928 |
APEX aperture | 5.655638 |
APEX brightness | 7.48984375 |
APEX exposure bias | 0 |
Maximum land aperture | 4 APEX (f/4) |
Metering mode | Pattern |
Light source | Unknown |
Flash | Flash did not fire, auto mode |
Color space | sRGB |
Focal plane X resolution | 2,553.1914978027 |
Focal plane Y resolution | 2,553.1914978027 |
Focal plane resolution unit | 3 |
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 |
Focal length in 35 mm film | 34 mm |
Scene capture type | Standard |
Contrast | Normal |
Saturation | Normal |
Sharpness | Normal |
Lens used | E 18-200mm F3.5-6.3 OSS |
Date metadata was last modified | 21:46, 7 July 2014 |
Unique ID of original document | 474C72A8EA30AEDD3A17B49FAFC441ED |
Copyright status | Copyrighted |
Keywords | Infomatique |
Contact information | williamm@infomatique.org
www.streetsofdublin.com 29 Bolton Court, Bolton Street Dublin, , Dublin 1 Ireland |
IIM version | 4 |