An Urgent Message - Risk of Fire

[gordon stelter]

My understanding is that light energy converts to heat
energy after bouncing around and once absorbed by
matter.  So something could produce a LOT of light,
and no initial heat at the source, ---though the heat
will be produced by whatever material absorbs the
light rays.
     Thump



--- Dean May <deanmay@pianorebuilders.com> wrote:

> 
> >>Dean is right--but only for incandescent
> technology.
> 
> Maybe I could help clarify a little here. A light
> bulb converts
> electrical energy to heat energy and light. A
> fluorescent bulb is more
> efficient at producing light than incandescent and a
> LED is more
> efficient yet. But still very little of the
> electrical energy is going
> into light production and most of it is going into
> heat. It really does
> not matter what kind of light source you have, a
> good rule of thumb for
> how much heat is generated is the electrical
> consumption. It will never
> produce more than its electrical draw, conservation
> of energy won't
> allow it. 
> 
> Or were you talking about the dimmer switches? On
> those, of course, you
> can only use incandescent bulbs or halogens. 
> 
> 
> Dean
> Dean May             cell 812.239.3359
> PianoRebuilders.com   812.235.5272
> Terre Haute IN  47802
> 
> 
> -----Original Message-----
> From: pianotech-bounces@ptg.org
> [mailto:pianotech-bounces@ptg.org] On
> Behalf Of Don
> Sent: Wednesday, July 20, 2005 12:13 AM
> To: Pianotech
> Subject: RE: An Urgent Message - Risk of Fire
> 
> Hi Susan,
> 
> Trust me the led bulbs run very cool. Ten of them
> would draw 18
> watts--and
> produce about the same intensity of light as one 450
> watt bulb. 
> 
> At 09:20 PM 7/19/2005 -0700, you wrote:
> >At 09:35 PM 7/19/2005 -0500, you wrote:
> >>Virtually all of the energy consumed by a bulb
> goes into heat
> >>production.
> >
> >Dean, do you know if this is also true of the new
> LED bulbs?
> >I don't see how it could be true, if they draw that
> little power
> >and make that much light.
> >
> >I'll try the web soon, and see what I can find out.
> >
> >Susan
> 
> Regards,
> Don Rose, B.Mus., A.M.U.S., A.MUS., R.P.T.
> Non calor sed umor est qui nobis incommodat
> 
> mailto:pianotuna@yahoo.com
> http://us.geocities.com/drpt1948/
> 
> 3004 Grant Rd. REGINA, SK, S4S 5G7
> 306-352-3620 or 1-888-29t-uner
> 
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> 
> 
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