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This can also drive one mad. (see bottom post)
>
> Message: 7
> Date: Fri, 7 Oct 2005 15:12:56 -0700 (PDT)
> From: "S. Hieber" <shieber at yahoo_com>
> Subject: Re: [APD] Lighting
> To: aquatic plants digest <aquatic-plants at actwin_com>
>
> The biggest electrocution was of Jumbo, a circus elephant
> that had gone off into the crdowd and killed some folks.
>
> It was decided that the best way to deal with the creature
> was to have Edison electrocute in front of the crowd and
> cameras. Iirc, Edison suggested the idea, who up until that
> time had only done demos with cats and dogs.
>
> http://mirrors.meepzorp.com/historysociety.ca/jumbo-in-the-new-world/
>
> AC won out over DC, but Edison prospered and Tesla went
> broke and perhaps a bit mad.
>
> sh
>
> --- urville <urville at peoplepc_com> wrote:
>
>> stupid edison...
>>
>>
>> S. Hieber wrote:
>>
>> >Tesla was fooling around with wireless lighting, among
>> the
>> >many other "wild and crazy" things he was into. In fact,
>> he
>> >figured it was possible to transmit electricty great
>> >distances without wires and pursued this idea for many
>> >years after he had established the viability of
>> >transmitting alternating current via wire.
>> >
>> >The lights in his shop were wireless. Tesla saw very few
>> >patents go into production. One of the few was the ac
>> >motor, which he essentially gave away to his friend
>> >Westinghouse.
>> >
>> >Meanwhile, Edison, whose patents relied on DC power
>> >generation, gave demonstartions of animal electrocution
>> >around the country to demonstrate how dangerous AC was.
>> >
>> >Tesla countered my giving himself a large jolt of AC at
>> >very high frequency and suffered no apparent harm. The
>> >Edison was always the more popular of the two, as were
>> his
>> >shows.
>> >
>> >sh
>> >
>> >--- urville <urville at peoplepc_com> wrote:
>> >
>> >
>> >
>> >>now see i want tesla lights!
>> >>did they ever get made?
>> >>
>> >>
>> >>S. Hieber wrote:
>> >>
>> >>
>> >>
>> >>>Your power company is probably comparing compact
>> >>>flourescents to incandescent bulbs.
>> >>>
>> >>>Another one of Edison's get rich quick schemes,
>> >>>incandescent bulbs shed about 95-97% of their input
>> >>>
>> >>>
>> >>energy
>> >>
>> >>
>> >>>as heat and the balance as light. That's right, almost
>> >>>every bit of energy they consume is wasted! They
>> always
>> >>>could be made cheaply and with Edison's support they
>> >>>
>> >>>
>> >>caught
>> >>
>> >>
>> >>>on quite well. Tesla and others had more efficient
>> >>>alternatives, but everyone tended to believe Edison.
>> >>>
>> >>>With fluorescents, about 65% of their input energy as
>> >>>
>> >>>
>> >>heat
>> >>
>> >>
>> >>>nd about 35% as light. The seems pretty inefficent
>> until
>> >>>you compare it to incandescents! With a compact
>> >>>fluporescent that's all coiled up, that percentage of
>> >>>
>> >>>
>> >>light
>> >>
>> >>
>> >>>output drops a bit because the bulb blocks some of its
>> >>>
>> >>>
>> >>own
>> >>
>> >>
>> >>>light. So a fluorescent bulb rated at roughly about
>> 1/4
>> >>>
>> >>>
>> >>to
>> >>
>> >>
>> >>>1/5 the wattage (actual consumption) of an
>> incandescent
>> >>>will give off about the same amount of light. If you
>> >>>
>> >>>
>> >>don't
>> >>
>> >>
>> >>>turn them on and off often, they will tend to burn (to
>> >>>work) for much longer than incandescent bulbs too.
>> >>>
>> >>>Thus, it's hard *not* to save money switching to cf
>> >>>
>> >>>
>> >>unless
>> >>
>> >>
>> >>>one pays rediculously high prices for cf bulbs.
>> >>>
>> >>>
>> >>Drawbacks
>> >>
>> >>
>> >>>are 1) they cost more up front than incadescent bulbs
>> >>>
>> >>>
>> >>and
>> >>
>> >>
>> >>>2) fluorescents don't have the relative excess of red
>> >>>wavelength light that incandescents have and will
>> >>>
>> >>>
>> >>probably
>> >>
>> >>
>> >>>have much more green, so things will look somewhat
>> diff
>> >>>color under one light rather than the other. The diff
>> >>>
>> >>>
>> >>can
>> >>
>> >>
>> >>>be striking at first but even in striking cases, the
>> >>>
>> >>>
>> >>human
>> >>
>> >>
>> >>>perception seems to adapt after a short while. In cany
>> >>>case, the amount of diff varies from one brand of bulb
>> >>>
>> >>>
>> >>to
>> >>
>> >>
>> >>>another. The really cheap compcat fluorescents can
>> >>>
>> >>>
>> >>appear
>> >>
>> >>
>> >>>downright ghastly and make your skin appear downright
>> >>>ghostly. The better bulbs, don't make things look all
>> >>>
>> >>>
>> >>that
>> >>
>> >>
>> >>>diff. Note that how things look under incandescent is
>> >>>
>> >>>
>> >>not
>> >>
>> >>
>> >>>more correct; just diff and what most folks are used
>> to.
>> >>>
>> >>>
>> >>>Some people claim they can't tolerate being under
>> >>>flourescent lighting because of the blinking. "Old
>> >>>fashioned" fluorescent cycled on/off at 120 times per
>> >>>second with some detectable perectual artifacts. (How,
>> >>>these folks watch movies or television, I'll never
>> >>>know.)Anyway, compact fluorescents usually cycle at
>> >>>
>> >>>
>> >>several
>> >>
>> >>
>> >>>thousand to several tens of thousands time per sec,
>> and
>> >>>human visual perception simply cannot detect that.
>> >>>
>> >>>
>> >>>
>> >>>Note that most of your electric bill is probably going
>> >>>towards any heating or airconditioning devices that
>> use
>> >>>motors. Or other appliances such as steam irons,
>> >>>
>> >>>
>> >>toaster,
>> >>
>> >>
>> >>>dishwashers, etc. If you use any of those a lot,
>> >>>
>> >>>
>> >>changing
>> >>
>> >>
>> >>>bulbs won't make a big dent in your electric bill.
>> >>>
>> >>>Still incadescents are such awfully inefficent
>> devices,
>> >>>it's a shame to use them if you don't have to.
>> Although,
>> >>>they are excellent electric heaters if you can
>> >>>
>> >>>
>> >>accomodate
>> >>
>> >>
>> >>>their fragility ;-)
>> >>>
>> >>>
>> >>>sh
>> >>>
>> >>>--- Lief Brittan Youngs <liefy at yahoo_com> wrote:
>> >>>
>> >>>
>> >>>
>> >>>
>> >>>
>> >>>>My utility company is raving about compact
>> flourescent
>> >>>>lighting being the way to save huge costs on
>> >>>>
>> >>>>
>> >>electricity
>> >>
>> >>
>> >>>>even though the light bulbs are more expensive. Can
>> >>>>anyone veryify this?
>> >>>>
>> >>>>Also, I have been told for same amount of light you
>> >>>>
>> >>>>
>> >>need
>> >>
>> >>
>> >>>>a lower wattage compact flourescent bulb. If there
>> the
>> >>>>same savings and added light are the same in aquarium
>> >>>>lighting? Or are the compact light fixtures and bulbs
>> >>>>
>> >>>>
>> >>too
>> >>
>> >>
>> >>>>expensive?
>> >>>>
>> >>>>
>> >>>>
>> >>>>
>> >>>* * * * * * * * * * *
>> >>>Coming Soon in November, the winners and all the other
>> >>>
>> >>>
>> >>beautiful entries in the 6th Annual International
>> >>Aquascaping Contest. Every continent is represented --
>> >>except Antarctica. Maybe next year Antarctica, too ;-)
>> >>
>> >>
>> >>>http://showcase.aquatic-gardeners.org
>> >>>_______________________________________________
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>> >>>Aquatic-Plants at actwin_com
>> >>>http://www.actwin.com/mailman/listinfo/aquatic-plants
>> >>>
>> >>>
>> >>>
>> >>>
>> >>>
>> >>_______________________________________________
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>> >>
>> >>
>> >>
>> >
>> >_______________________________________________
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>> >
>> >
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>
>
>
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>
> End of Aquatic-Plants Digest, Vol 26, Issue 16
> **********************************************
Thanks
Doug
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