[Robotgroup] [RE]Re: Strobing light onto water...?

[Def Egge]

Mark,

The old bluing agents were, literally, water-soluble blue dyes.  They
lacked significant UV absorption / fluorescence.  I, too, can remember
seeing the stuff around the house.

The newer optical whitening agents - usually invisible to the naked eye or
with a yellowish tinge  - but fluorescing intensely under UV (or in bright
sunlight) are a completely different class of compounds.  In addition to
being more light stable, they can be engineered to be soluble in a wide
variety of carriers.

It might be interesting to see the effects of the modern optical whiteners
mixed with food coloring.

I hope all is well with the new addition to the family and the new job.


All the best....

Mike




At 13:02 2006/08/11 -0400, you wrote:
>
>   To make "whites whiter" detergents have what is called a "bluing
>   agent". It used to be that you could purchase this separately. It is a
>   chemical that reflects ultraviolet light but is otherwise colorless
>   when in your laundry. Thus it makes your white laundry seem to glow
>   whiter in sunlight (and in some street lights). I recall my
>   grandmother having a bottle of this liquid and it looked a bit blue in
>   color, like a watered-down ink.
>   Possibly, a bluing agent with food coloring is all you need. You could
>   have red, yellow, green, blue, and so on. The ultraviolet LEDs should
>   bring out the fun colors.
>   Regards,
>   Mark
>   ---------[ Received Mail Content ]----------
>   Subject : Re: [Robotgroup] Strobing light onto water...?
>   Date : Wed, 09 Aug 2006 12:45:30 -0500
>   From : Don Colbath
>   To : Austin Robotgroup Mailing List
>   Verified that even diluted my dollar store detergent with bleach
>   alternative glows with my UV key chain light. Was shining it around
>   the garage to see what else lit up and the lid to my fabric softener
>   lit
>   up orange then I hit a florescent yellow sticker and it was very
>   bright.
>   Anyway I think a dripping fountain with UV LED strobes would be cool.
>   What about milk?
>   What about milk with detergent? Wouldn't taste too good but might look
>   great.
>   Don
>   Paul Atkinson wrote:
>   >Looks really cool, just remember that flourescein (sp?) stains
>   everything! Might be easier to use tonic water or quinine. I wonder if
>   Mike still has that list of UV flourescing materials, cat urine, etc.
>   >
>   >Paul
>   >
>   >Denise Scioli wrote:
>   >We must get a bottle of this asap! Way cool. The ideas are
>   multiplying at
>   >great rate.
>   >
>   >Denise
>   >
>   >
>   >
>   >>From: Vern Graner
>   >>Reply-To: vern at txis.com, Austin Robotgroup Mailing List
>   >>
>   >>To: Austin Robotgroup Mailing List
>   >>Subject: [Robotgroup] Strobing light onto water...?
>   >>Date: Tue, 08 Aug 2006 18:49:15 -0500
>   >>
>   >>Sounds simple... even boring.. till you SEE IT! WOW!
>   >>
>   >>http://cre.ations.net/creation/44
>   >>
>   >>Vern
>   >>
>   >>--
>   >>Vern Graner CNE/CNA/SSE
>   "If the network is down, then you're
>   >>Senior Systems Engineer
>   obviously incompetent so why are we
>   >>Texas Information Services
>   paying you? Of course, if the network
>   >>http://www.txis.com
>   is up, then we obviously don't need
>   >>Austin Office 512 328-8947
>   you, so why are we paying you?" ©VLG
>   >>_______________________________________________
>   >>Robotgroup mailing list
>   >>Robotgroup at puremagic.com
>   >>http://lists.puremagic.com/cgi-bin/mailman/listinfo/robotgroup
>   >>
>   >>
>   >
>   >
>   >_______________________________________________
>   >Robotgroup mailing list
>   >Robotgroup at puremagic.com
>   >http://lists.puremagic.com/cgi-bin/mailman/listinfo/robotgroup
>   >
>   >
>   > __________________________________________________
>   >Do You Yahoo!?
>   >Tired of spam? Yahoo! Mail has the best spam protection around
>   >http://mail.yahoo.com
>   >
>   >---------------------------------
>   >Talk is cheap. Use Yahoo! Messenger to make PC-to-Phone calls. Great
>   rates starting at 1¢/min.
>   >_______________________________________________
>   >Robotgroup mailing list
>   >Robotgroup at puremagic.com
>   >http://lists.puremagic.com/cgi-bin/mailman/listinfo/robotgroup
>   >
>   >
>   >
>   --
>   Black Holes are where God divided by zero.
>   _______________________________________________
>   Robotgroup mailing list
>   Robotgroup at puremagic.com
>   http://lists.puremagic.com/cgi-bin/mailman/listinfo/robotgroup
>   ---------------------------------------------------------
>   My parents just came back from a planet where the
>   dominant lifeform had no bilateral symmetry,
>   and all I got was this stupid F-Shirt.
>   ---------------------------------------------------------
>_______________________________________________
>Robotgroup mailing list
>Robotgroup at puremagic.com
>http://lists.puremagic.com/cgi-bin/mailman/listinfo/robotgroup
>