The Kopp-Etchells Effect
An amazing story with some amazing photographs.
When a metal helicopter blade passes through bone-dry air with suspended particles, luminescence happens. There was never a name for this effect until now.
Check out
Michael Yon's Online Magazine for the images and the story.
Here is one to whet your appetite:
Posted by DaveH at September 2, 2009 11:42 AM
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