[clug] CD recycling trip

Stephen Gibson Stephen.Gibson at anu.edu.au
Mon Feb 13 20:11:32 MST 2012

Does anyone have any of the clear plastic DVDs/CDs WITH grooves? These were
once used as top/bottom spacers in DVD/CD packs.  The clear DVDs make great
transmission diffraction grating. e.g. look at a street lamp THROUGH the 
DVD hole,
hold the disk close to one eye and then move it toward the light. There 
will be a
point at which bright circles of coloured light appear. This is the lamp
spectrum.  In more recent packaging, the clear grooved DVDs appear to 
have been replaced
by clear or black solid plastic disks.  If anyone has the clear plastic 
grooved version I would be
pleased to take possession.  BTW, it is possible to delaminate DVD's, 
but this is a pain.



Paul Wayper wrote:
> Hi all,
> I've collected a couple of hundred CDs over the years which I intend
> to take to recycling, and I found the actual company that takes them
> in Wetherill Park in Sydney.  As it happens, I am going to be up near
> Wetherill Park in mid March (for the practice round of the TTXGP 2012
> racing season at Eastern Creek, of course - see [1]) [1].  I'm
> willing to collect old CDs for recycling during the next month and
> take them up to be recycled as part of the trip.  It's not going to
> be secure, but then they'll still be shredded and turned into park
> benches or whatever so the chance of finding that old copy of your
> scanned birth certificate is small at best :-)
> Give me a call on 0422 392 081 or drop me an email if you've got some
> CDs to recycle!
> Have fun,
> Paul 
> [1] http://www.egrandprix.com/news.php?id=267 [2]
> Links:
> ------
> [1] http://www.egrandprix.com/news.php?id=267
> [2] http://www.egrandprix.com/news.php?id=267

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