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File:Fused silica phosphorescence from a 24 million watt flash.jpg

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Summary

Description

This photo was taken 30 seconds after a 24 million watt discharge, (85 joules/3.5 microseconds), through a quartz glass (fused silica) flashtube measuring 10 mm inside diameter by 150 mm arc length.

The discharge dumped about half a million watts per square centimeter of internal surface area through the tube. The arc temperature of approximately 17,000 Kelvin produced an output centered at 170 nanometers, in the far ultraviolet. Some of this energy was absorbed by the quartz, and is reemitted as blue phosphorescence. The phosphorescence of the quartz is strongest near the trigger wire, which is wrapped along the length of the lamp, where the arc maintained contact with the glass, (due to the use of external triggering at high speeds). The blue afterglow faded slowly away over the course of 20 minutes.
Date 19:30, 10 September 2009 (UTC)
Source I (Zaereth (talk)) created this work entirely by myself.
Author Zaereth (talk)

Licensing

Public domain This work has been released into the public domain by its author, Zaereth at English Wikipedia. This applies worldwide.
In some countries this may not be legally possible; if so:
Zaereth grants anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.

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The original description page was here. All following user names refer to en.wikipedia.
Date/Time Dimensions User Comment
2013-10-03 01:16:52 1901 × 652 Zaereth Cropped excess dark space
2010-06-05 07:51:17 2048 × 1536 Aavindraa fix contrast
2009-09-10 19:30:09 2048 × 1536 Zaereth {{Information |Description = This photo was taken 30 seconds after a 24 million watt discharge, (85 joules/3.5 microseconds), through a quartz glass (fused silica) flashtube measuring 10 mm inside diameter by 150 mm arc length. The phosphorescence of

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Date/TimeThumbnailDimensionsUserComment
current08:22, 25 February 2024Thumbnail for version as of 08:22, 25 February 20241,901 × 652 (125 KB)McapdevilaTransferred from en.wikipedia (MTC!) (1.1.0)

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