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Science > Physics |
| User: |
"" |
| Date: |
22 Apr 2007 06:24:37 AM |
| Object: |
typical light bulb |
I was just wondering what radiation frequencies other than visible
light a typical light bulb emits.
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| User: "Greg Neill" |
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| Title: Re: typical light bulb |
22 Apr 2007 07:15:06 AM |
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<bob@coolgroups.com> wrote in message
news:1177241077.318506.316060@e65g2000hsc.googlegroups.com...
I was just wondering what radiation frequencies other than visible
light a typical light bulb emits.
Google: - incandescent light spectrum
- Planck's Law
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| User: "Androcles" |
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| Title: Re: typical light bulb |
22 Apr 2007 07:28:18 AM |
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"Greg Neill" <gneillREM@VEsympatico.ca> wrote in message =
news:462b518b$0$30410$9a6e19ea@news.newshosting.com...
<bob@coolgroups.com> wrote in message
news:1177241077.318506.316060@e65g2000hsc.googlegroups.com...
I was just wondering what radiation frequencies other than visible
light a typical light bulb emits.
=20
Google: - incandescent light spectrum
- Planck's Law
=20
That's the difference between you and I.=20
You tell him to read about it, I tell him to see if it's hot.
Researchers don't read text books, they write them.
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| User: "Gordon" |
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| Title: Re: typical light bulb |
22 Apr 2007 01:37:03 PM |
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On Sun, 22 Apr 2007 12:28:18 GMT, "Androcles"
<Engineer@hogwarts.physics.co.uk> wrote:
"Greg Neill" <gneillREM@VEsympatico.ca> wrote in message news:462b518b$0$30410$9a6e19ea@news.newshosting.com...
<bob@coolgroups.com> wrote in message
news:1177241077.318506.316060@e65g2000hsc.googlegroups.com...
I was just wondering what radiation frequencies other than visible
light a typical light bulb emits.
Google: - incandescent light spectrum
- Planck's Law
That's the difference between you and I.
You tell him to read about it, I tell him to see if it's hot.
Researchers don't read text books, they write them.
Androclese, you might benefit from reading this morning's (April
22) edition of the "For Better of For Worse" comic strip.
Restructure your sentence to read,"That's the difference between
I and you." Does that sound a bit off key?
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| User: "CWatters" |
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| Title: Re: typical light bulb |
23 Apr 2007 03:16:15 AM |
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<bob@coolgroups.com> wrote in message
news:1177241077.318506.316060@e65g2000hsc.googlegroups.com...
I was just wondering what radiation frequencies other than visible
light a typical light bulb emits.
Some emit sound briefly when switched on due to the thermal shock.
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| User: "Androcles" |
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| Title: Re: typical light bulb |
22 Apr 2007 06:46:19 AM |
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<bob@coolgroups.com> wrote in message =
news:1177241077.318506.316060@e65g2000hsc.googlegroups.com...
I was just wondering what radiation frequencies other than visible
light a typical light bulb emits.
Go see if it gets warm.
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| User: "Sam Wormley" |
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| Title: Re: typical light bulb |
22 Apr 2007 12:40:10 PM |
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wrote:
I was just wondering what radiation frequencies other than visible
light a typical light bulb emits.
http://ledmuseum.home.att.net/spectra.htm
http://www.assumption.edu/users/bniece/Spectra/Tutorials/Images/Wg.jpg
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| User: "Paul Cardinale" |
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| Title: Re: typical light bulb |
22 Apr 2007 10:12:52 AM |
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wrote:
I was just wondering what radiation frequencies other than visible
light a typical light bulb emits.
The emitted spectrum is broad band. It goes all the way up and all
the way down.
Most of it is in the infrared region. A few percent is visible, a
much smaller amount in UV, negiegible above that. In the other
direction, there's not much emitted below the deep IR.
Paul Cardinale
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| User: "" |
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| Title: Re: typical light bulb |
22 Apr 2007 03:08:58 PM |
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In article <1177254772.521155.158290@b75g2000hsg.googlegroups.com>, Paul Cardinale <pcardinale@volcanomail.com> writes:
bob@coolgroups.com wrote:
I was just wondering what radiation frequencies other than visible
light a typical light bulb emits.
The emitted spectrum is broad band. It goes all the way up and all
the way down.
Most of it is in the infrared region. A few percent is visible, a
much smaller amount in UV, negiegible above that. In the other
direction, there's not much emitted below the deep IR.
Except for a local peak at 60Hz (50 in Europe).
Mati Meron | "When you argue with a fool,
meron@cars.uchicago.edu | chances are he is doing just the same"
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| User: "tj Frazir" |
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| Title: Re: typical light bulb |
22 Apr 2007 09:41:07 PM |
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99,99 % ir .
a 13 watt phlorecent is 10 % heat.
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| User: "The Ghost In The Machine" |
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| Title: Re: typical light bulb |
22 Apr 2007 02:24:46 PM |
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In sci.physics,
<>
wrote
on 22 Apr 2007 04:24:37 -0700
<1177241077.318506.316060@e65g2000hsc.googlegroups.com>:
I was just wondering what radiation frequencies other than visible
light a typical light bulb emits.
You'll need multiple instruments.
[1] A spectrograph or diffraction grating for the visible region.
[2] There should be an infrared variant of a diffraction grating -- the
main issue being the sensor -- which you can use.
[3] A tunable radio might be of some benefit, for the radio waves.
[4] I doubt you'll get much UV but another diffraction grating
specifically for UV might be of interest.
[5] You'll of course want to consult black body radiation theory to
get a rough idea of exactly what values you're expecting to measure with
this equipment.
--
#191,
Useless C++ Programming Idea #992381111:
while(bit&BITMASK) ;
--
Posted via a free Usenet account from http://www.teranews.com
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