[Lab] UV measurement

[Emily Daniels]

Just reread your response Paul- brilliant! I have some of that
photosensitive UV paper! Thanks for jogging my memory!

On Fri, May 18, 2012 at 5:25 PM, Emily Daniels <emily.daniels at gmail.com>wrote:

> Thanks guys-
>
> So I added Magnesium Carbonate (climber's chalk) as the fluorescent
> substance and from what I could find Magnesite is the most common form
> which does fluoresce, phosporesce and occasionally triboluminesce. The
> climber's chalk did not state it was from Magnesite, but "an athletic grade
> of natural carbonate of magnesia" with no additives.
>
> I added this to the piezoelectric salt mixture that I used in a previous
> experiment and when it sets I'll hook it up to some electricity and see
> what happens. I had a terrible time trying to locate other fluorescent
> materials around town- I was close to using baby powder at one point (Talc
> fluoresces) but chickened out due to the unknown "parfum" factor. If it
> doesn't work it's ok, but it would be neat to see if the piezoelectric salt
> is producing some kind of UV radiation.
>
> Emily
>
>
> On Fri, May 18, 2012 at 5:11 PM, Michael Ayukawa <mike.ayukawa at gmail.com>wrote:
>
>> To just confirm you have a UV source I'd just start with one of these
>> minerals:
>> http://en.wikipedia.org/wiki/File:Fluorescent_minerals_hg.jpg
>>
>> Looks like calcite is on the list.  So go find some chips of white marble
>> from
>> a gardening store or borrow some from a potted plant.
>>
>>
>> http://www1.newark.ohio-state.edu/Professional/OSU/Faculty/jstjohn/Zinc%20ore/Franklin-Marble.htm
>>
>> /Mike
>>
>> On 2012-05-18, at 5:02 PM, Paul & Andrea Mumby wrote:
>>
>> Something like this will detect UV, but it's an on/off type sensor (no
>> "measurement")
>>
>> http://www.seeedstudio.com/depot/uv-tron-driver-circuit-c10807-p-640.html?cPath=6
>>
>> Certain types of phosphors will convert UV to visible light.
>>
>> Also there are photosensitive papers that will react to UV (turning from
>> black to white when exposed to UV for example)
>> such as:
>> http://www.onlinesciencemall.com/sunart-paper-8x10-uv-sensitive-rayograph-paper-kit.html
>>
>> Hope that helps :)
>>
>> - Paul
>>
>> On Fri, May 18, 2012 at 4:55 PM, Emily Daniels <emily.daniels at gmail.com>wrote:
>>
>>> Hi Labbers,
>>>
>>> I may have already asked this group but does anyone have a way/device to
>>> measure ultraviolet (UVA/UVB/UVC) radiation and intensity/wavelengths? I
>>> may have just made something that gives off UV light but I'm not entirely
>>> sure. Any suggestions?
>>>
>>> Emily
>>>
>>> --
>>> Emily Daniels | emilydaniels.com | @emdaniels | awesomefoundation.org
>>>
>>>
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>
>
> --
> Emily Daniels | emilydaniels.com | @emdaniels | awesomefoundation.org
>
>


-- 
Emily Daniels | emilydaniels.com | @emdaniels | awesomefoundation.org
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