Image:DSCN1739-thomson-tide-machine.jpg

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Description

Tide predicting machine, by Sir William Thomson in 1876.

The accompanying plaque says: this, the first full sized machine for predicting tides, combined ten tidal components (one pulley for each componenet). It could trace the heights of the tides for one year in about four hours.

See-also http://www.bartleby.com/30/16.html, esp. figure 132.

Location: Science Museum, London.
Source

en:Image:DSCN1739-thomson-tide-machine.jpg
Date

upload on 20:53, February 19, 2005
Author

William M. Connolley
Permission
( Reusing this image)

NOTE: "subject to disclaimers" below may not actually apply, this was tagged with {{ GFDL-user-en}}, and after May 2007, w:en:Template:GFDL-self did not require disclaimers. Please check the image description page on the English Wikipedia (or, if it has been deleted, ask an English Wikipedia administrator). See Wikipedia:GFDL standardization for details.
William M. Connolley at the English language Wikipedia, the copyright holder of this work, has published or hereby publishes it under the following license:
GNU head 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.
Subject to disclaimers.

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See also:

Kelvin's harmonic analyser
Kelvin's harmonic analyser

File history

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Date/Time Dimensions User Comment
current 12:19, 10 December 2006 600×700 (77 KB) Suku ({{Information |Description=Tide predicting machine, by Sir William Thomson in 1876. Location: Science Museum, London. Photo: William M. Connolley, 2005/02. Th)
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Metadata

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Camera manufacturer NIKON
Camera model E950
Exposure time 1/5 sec (0.2)
F-number f/2.9
Date and time of data generation 14:47, 18 February 2005
Lens focal length 10.2 mm
Horizontal resolution 300 dpi
Vertical resolution 300 dpi
Software used v981p-79
File change date and time 14:47, 18 February 2005
Y and C positioning 2
Exposure Program Normal program
ISO speed rating 80
Exif version 2.1
Date and time of digitizing 14:47, 18 February 2005
Image compression mode 2
Exposure bias 0
Maximum land aperture 2.6
Metering mode Pattern
Light source Unknown
Flash 0
Colour space sRGB
White balance Auto white balance
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