Re: Detecting fluorescence [was: FA Papers
Re: Detecting fluorescence [was: FA Papers
- Subject: Re: Detecting fluorescence [was: FA Papers
- From: Graeme Gill <email@hidden>
- Date: Thu, 22 Mar 2007 16:09:13 +1100
Marco Ugolini wrote:
Those are the two ways I use too: either a black light, or my EyeOne Pro Rev
B (non UV-cut) to look for a "bump" in the spectral energy distribution of
the paper base in the area around 440nm.
It's also a characteristic that the reflectance goes down steeply
below the "bump" - this is the FWA absorbing the shorter wavelengths,
so it can re-emit the energy at longer wavelengths.
Graeme Gill.
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