Eco bulbs:

[Bob Evans]

At 11:04 a.m. 17/08/2008 +1200, Paul King wrote:

>With respect to the economics of moving to Eco-bulbs. The small capital cost
>involved with such a switch is repaid with interest within 6 months of
>installation, and over the lifetime of an eco bulb (20 W) savings amount to
>about $75 at least. This is electricity not generated, gas not ignited. It
>is a genuine, major cost saving as well a huge energy efficiency boost. Now
>to apply the same effort to getting insulation retrofitted.

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.

>And in the early 60's my wife's unattended science class snitched some
>mercury. Apparently the whole class put drops in their mouths where the
>slithering cool in the groves of the  tongue produced weirdly sensual
>sensations! There was no outbreak of mercury poisoning and she remains
>extraordinarily clever.

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.

Bob

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