File:Radium226.jpg

This is a file from the Wikimedia Commons. Information from its description page there is shown below.
Commons is a freely licensed media file repository. You can help.

Summary

Description	English: Radium electroplated on a very small sample of copper foil and covered with polyurethane to prevent reaction with the air.
Date
Source	Own work
Author	grenadier

Licensing

I, the copyright holder of this work, hereby publish it under the following license:

This file is licensed under the Creative Commons Attribution 3.0 Unported license.

You are free:

to share – to copy, distribute and transmit the work
to remix – to adapt the work

Under the following conditions:

attribution – You must attribute the work in the manner specified by the author or licensor (but not in any way that suggests that they endorse you or your use of the work).

CC-BY-3.0 Creative Commons Attribution 3.0 truetrue

File usage

The following pages on Schools Wikipedia link to this image (list may be incomplete):

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.

Image title	SONY DSC
Camera manufacturer	SONY
Camera model	DSLR-A300
Exposure time	1/125 sec (0.008)
F-number	f/5.6
ISO speed rating	100
Date and time of data generation	15:54, 18 September 2010
Lens focal length	70 mm
Orientation	Normal
Horizontal resolution	72 dpi
Vertical resolution	72 dpi
Software used	Adobe Photoshop CS4 Windows
File change date and time	16:59, 18 September 2010
Y and C positioning	Co-sited
Exposure Program	Normal program
Exif version	2.21
Date and time of digitizing	15:54, 18 September 2010
Image compression mode	8
APEX brightness	7
Exposure bias	0
Maximum land aperture	4.97 APEX (f/5.6)
Metering mode	Pattern
Light source	Unknown
Flash	Flash did not fire, compulsory flash suppression
Colour space	sRGB
Custom image processing	Normal process
Exposure mode	Auto exposure
White balance	Auto white balance
Focal length in 35 mm film	105 mm
Scene capture type	Standard
Contrast	Normal
Saturation	Normal
Sharpness	Normal

Wikipedia for Schools...

Schools Wikipedia was created by children's charity SOS Childrens Villages. SOS Children cares for children who have lost their parents. Our Children's Villages give these children a new home and a new family, while a high-quality education and the best of medical care ensures they will grow up with all they need to succeed in adult life. Will you help another child today?