[Rockhounds] Telling the UV from the Lamppost.

[Axel Emmermann]

Or try a ruby. If it fluoresces you have a LW lamp.

Cheers

Axel Emmermann
European Regional Vice President of the
Fluorescent Mineral Society
<http://www.uvminerals.org/>
=========================
Mineralogische Kring Antwerpen/Antwerp Mineralogical Society
<http://www.minerant.org/index.html>
Werkgroepleider/Workgroup leader: Fluorescerende mineralen/Fluorescent
minerals
Technische Realisaties/Engineering
My website: http://users.telenet.be/axel.emmerman/FiatLux/Index.php
 
 

> -----Oorspronkelijk bericht-----
> Van: rockhounds-bounces at lists.drizzle.com
[mailto:rockhounds-bounces at lists.drizzle.com]
> Namens pmodreski at aol.com
> Verzonden: woensdag 13 mei 2009 17:33
> Aan: rockhounds at lists.drizzle.com
> Onderwerp: Re: [Rockhounds] Telling the UV from the Lamppost.
> 
> Also, John, empirically,
> 
> Try it on any specimen of agate or chalcedony or hyalite opal that you
know fluoresces bright
> green.? If it fluoresces well with this lamp, then you know it is a
shortwave lamp.? If you see
> pretty much no fluorescence, it is a LW lamp.
> 
> Pete
> 
> 
> -----Original Message-----
> From: Axel Emmermann <axel.emmermann at pandora.be>
> To: 'Rockhounds at drizzle.com: A mailing list for rock and gem collectors'
> <rockhounds at lists.drizzle.com>
> Sent: Wed, 13 May 2009 1:21 am
> Subject: RE: [Rockhounds] Telling the UV from the Lamppost.
> 
> 
> 
> Look at the bulb:
> 
> If it's dark blue, near black, then you have a long wave light. 366 or 368
> nm
> 
> If it's white when off and very pale blue when on you may have  a
blacklight
> blue (which needs a filter to filter out the visible light (350 or 366 nm)
> OR a mid-range UV lamp (312 or 320 nm).
> 
> If the bulb is water clear, you have a short wave lamp. That one also
needs
> a filter to block visible light. 253.7 nm.
> 
> Was this helpful?
> 
> Axel Emmermann
> European Regional Vice President of the
> Fluorescent Mineral Society
> <http://www.uvminerals.org/>
> =========================
> Mineralogische Kring Antwerpen/Antwerp Mineralogical Society
> <http://www.minerant.org/index.html>
> Werkgroepleider/Workgroup leader: Fluorescerende mineralen/Fluorescent
> minerals
> Technische Realisaties/Engineering
> My website: http://users.telenet.be/axel.emmerman/FiatLux/Index.php
> 
> 
> 
> > -----Oorspronkelijk bericht-----
> > Van: rockhounds-bounces at lists.drizzle.com
> [mailto:rockhounds-bounces at lists.drizzle.com]
> > Namens jb
> > Verzonden: woensdag 13 mei 2009 6:48
> > Aan: Rockhounds at drizzle.com: A mailing list for rock and gem collectors
> > Onderwerp: [Rockhounds] Telling the UV from the Lamppost.
> >
> > I know that this is not a stupid question, because that is the one you
> > don't ask, so...
> >
> > I have a UV light with no markings.
> > The tube itself has no markings.
> > I have no immediate access to reference material that may be of any
> > help. So...
> >
> > What is the best way to determine what frequency the lamp is?
> >
> >
> >
> > john
> >
> > --
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