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Anonymous
Posted on Tuesday, August 17, 2004 - 7:36 pm:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

hello everyone,

I'm an amature rock collector and was wondering if anyone knew how to create a homemade UV source. The UV bulbs from stores are rather weak to show the flourescence effect to a large degree.
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Andrew
Posted on Wednesday, August 18, 2004 - 9:51 am:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

The best options that I can think of are store-bought. You could buy a fluorescent tube lamp for detecting counterfit money (they have them at radioshack), or you could buy a UV flashlight ( here is a good site)
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Simon Quellen Field (Sfield)
Posted on Wednesday, August 18, 2004 - 12:06 pm:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

How about using the sun?

Build a cardboard box that has a diffraction grating
covering a hole in the top. Arrange some flat black baffles,
so that only the UV end of the spectrum gets into the box.

Place the specimen in the box, hold the box at the proper
angle to the sun to let only UV in, and peek at the sample
through a hole in the side of the box.

No batteries, fairly portable, and inexpensive.
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Anonymous
Posted on Friday, August 20, 2004 - 9:59 pm:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

I just bought some of the differaction gratings. Thanks for the advice about using the UV from the sun.
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MAX
Unregistered guest
Posted From: 195.29.65.87
Posted on Saturday, August 13, 2005 - 1:24 pm:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

THE BEST SOLUTION IS PRISM AND SUN LIGHT.
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Simon Quellen Field (Sfield)
Senior Member
Username: Sfield

Post Number: 626
Registered: 12-2004
Posted on Sunday, August 14, 2005 - 1:04 am:   Edit PostDelete PostView Post/Check IPPrint Post   Move Post (Moderator/Admin Only)Ban Poster IP (Moderator/Admin only)

Actually, diffraction gratings are cheaper, lighter, and less bulky
than prisms, while performing the same function.

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