Image:Celt with gemstone turtles-01.jpg

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[edit] Summary

Description

Celt are asymmetrical tops which have a preferred direction of spin. If spun in the opposite direction they become unstable and reverse their spin to the preferred direction.
Source

Own work
Date

2006-10-06
Author

Ed Keath
Permission
(Reusing this image)

GFDL and CC-by-SA-2.5,2.0 and 1.0

[edit] Licensing


I, the copyright holder of this work, hereby publish it under the following licenses:
GFDL 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.
Creative Commons: Some Rights Reserved
BYSA		 This file is licensed under the Creative Commons Attribution-ShareAlike license versions 2.5, 2.0, and 1.0.
You may select the license of your choice.

File history

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Date/TimeDimensionsUserComment
current03:30, 6 October 20062,432×1,737 (558 KB)Voyagr (Talk | contribs) ({{Information |Description=Celt are asymmetrical tops which have a preferred direction of spin. If spun in the opposite direction they become unstable and reverse their spin to the preferred direction. |Source= Own work |Date= 2006-10-06 |Author= Ed Keat)

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Metadata

This file contains additional information, probably added from the digital camera or scanner used to create or digitize it. If the file has been modified from its original state, some details may not fully reflect the modified file.

Camera manufacturer Canon
Camera model Canon EOS DIGITAL REBEL
Exposure time 16/5 sec (3.2)
F-number f/40
Date and time of data generation 18:48, 5 October 2006
Lens focal length 80 mm
Image title Celts are tops with a preffered direction of spin. If spun in the opposite direction the become unstable and reverse their spin to the preferred direction.
Orientation Normal
Horizontal resolution 347 dpi
Vertical resolution 347 dpi
Software used Adobe Photoshop Elements 2.0
File change date and time 19:07, 5 October 2006
Author Ed Keath
Y and C positioning 1
Copyright holder GNU Free Document License
ISO speed rating 100
Exif version 2.21
Date and time of digitizing 18:48, 5 October 2006
Image compression mode 3
Aperture 10.643859863281
Exposure bias 0
Maximum land aperture 4.9708557128906
Metering mode Pattern
Flash 0
Color space sRGB
Focal plane X resolution 3443.9461883408
Focal plane Y resolution 3442.0168067227
Focal plane resolution unit inches
Sensing method One-chip color area sensor
Custom image processing Normal process
Exposure mode Auto exposure
White balance Auto white balance
Scene capture type Standard