Re: Detecting fluorescence [was: FA Papers
Re: Detecting fluorescence [was: FA Papers
- Subject: Re: Detecting fluorescence [was: FA Papers
- From: Marco Ugolini <email@hidden>
- Date: Wed, 21 Mar 2007 22:53:26 -0700
In a message dated 3/21/07 10:09 PM, Graeme Gill wrote:
> 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.
True. Thank you for reminding me of that.
Marco Ugolini
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