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<DIV><FONT face=Arial size=2>I agree with Bob: we should be able to put an
energy figure on the production of comoditites such as filament and compact
flourescent light bulbs. I used to have a video which put a value in Joule
on cars, houses and all sorts of everyday items: it was very dated, so I no
longer use it, but I always wondered where the values came from. I
once met some very high-powered energy-policy people in Britain on a train:
their view was that we do have a value, measured in dollars (because the price
reflects the energy cost). I disagree with that assessment because I think
that relatively cheap energy in the form of fossil fuels give us a bias.
</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Has anyone seen any energy and enivironmental
assessment system that would assess the relative 'good' of the two types of
bulbs? It is bound to be flawed, but then at least we can have a
meaningful discussion. Unless we try to quantify the risks we can't make
any progress. </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT size=2><FONT face=Arial>Following the discussion about mercury (good
on Paul's wife!!) I was interested to read about Fallon, Nevada which is an
acute lymphocytic leukemia cluster . The presence of
tunsten in biological and drinking water samples in Fallon, Nevada, has
"alarmed public health, environmental and regulatory agencies. " </FONT><A
href="http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TGF-4HTCW5T-S&_user=10&_rdoc=1&_fmt=&_orig=search&_sort=d&view=c&_version=1&_urlVersion=0&_userid=10&md5=08e168eb617f5239d29002060c45fecd"><FONT
face=Arial>http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TGF-4HTCW5T-S&_user=10&_rdoc=1&_fmt=&_orig=search&_sort=d&view=c&_version=1&_urlVersion=0&_userid=10&md5=08e168eb617f5239d29002060c45fecd</FONT></A></FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>regards</FONT></DIV>
<DIV><FONT face=Arial size=2>Kerry</FONT></DIV>
<DIV> </DIV>
<BLOCKQUOTE
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=bevans@es.co.nz href="mailto:bevans@es.co.nz">Bob Evans</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=phys-teach-talk@nzip.org.nz
href="mailto:phys-teach-talk@nzip.org.nz">phys-teach-talk@nzip.org.nz</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Sunday, August 17, 2008 4:05
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> RE: Eco bulbs:</DIV>
<DIV><BR></DIV><FONT color=#0000ff>At 11:04 a.m. 17/08/2008 +1200, Paul King
wrote:<BR><BR></FONT>
<BLOCKQUOTE class=cite cite="" type="cite">With respect to the economics of
moving to Eco-bulbs. The small capital cost<BR>involved with such a switch
is repaid with interest within 6 months of<BR>installation, and over the
lifetime of an eco bulb (20 W) savings amount to<BR>about $75 at least. This
is electricity not generated, gas not ignited. It<BR>is a genuine, major
cost saving as well a huge energy efficiency boost. Now<BR>to apply the same
effort to getting insulation retrofitted.</BLOCKQUOTE><BR><FONT
color=#0000ff>I have wondered how much energy is required to manufacture
eco-bulbs compared to filament bulbs. This needs to be taken into
account when comparing the two types.<BR><BR></FONT>
<BLOCKQUOTE class=cite cite="" type="cite">And in the early 60's my wife's
unattended science class snitched some<BR>mercury. Apparently the whole
class put drops in their mouths where the<BR>slithering cool in the groves
of the tongue produced weirdly sensual<BR>sensations! There was no
outbreak of mercury poisoning and she remains<BR>extraordinarily
clever.</BLOCKQUOTE><BR><FONT color=#0000ff>Even earlier our school dental
nurse allowed us to play with mercury using our fingers and I don't think I've
been affected adversely (others may disagree, however!). Seriously
though, I agree mercury is dangerous but we've had fluorescent lights for
decades now.<BR><BR>Bob<BR><BR></FONT>
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