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Re: [Phys-l] modern light sources
From
: Bernard Cleyet <
bernardcleyet@redshift.com
>
Date
: Wed, 19 Jan 2011 00:03:54 -0800
Nope; they are very far from a black body, as witness from the failure of Pasco's black body app.
Metals are rather poor black bodies* better are the std. lamps Cenco once? sold for luminous calibration. Carbon filament.
bc
* emissivity varies w/temp. even. Double coiled ar sl. better for an obvious reason.
On 2011, Jan 18, , at 14:57, Bill Nettles wrote:
I guess at some point we'll have to pay PASCO $50 for an "blackbody lamp."
References
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[Phys-l] Earth's magnetic field
From:
"Anthony Lapinski" <Anthony_Lapinski@pds.org>
Re: [Phys-l] Earth's magnetic field
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John Denker <jsd@av8n.com>
Re: [Phys-l] Earth's magnetic field
From:
marx@phy.ilstu.edu
Re: [Phys-l] Earth's magnetic field
From:
William Robertson <wrobert9@ix.netcom.com>
Re: [Phys-l] Earth's magnetic field
From:
chuck britton <cvbritton@mac.com>
Re: [Phys-l] Earth's magnetic field
From:
Bernard Cleyet <bernardcleyet@redshift.com>
Re: [Phys-l] Earth's magnetic field
From:
chuck britton <cvbritton@mac.com>
[Phys-l] Domestic light sources
From:
ludwik kowalski <kowalskil@mail.montclair.edu>
Re: [Phys-l] Domestic light sources
From:
"Folkerts, Timothy J" <FolkertsT@bartonccc.edu>
Re: [Phys-l] Domestic light sources
From:
David Willey <dwilley@pitt.edu>
Re: [Phys-l] modern light sources
From:
John Denker <jsd@av8n.com>
Re: [Phys-l] modern light sources
From:
"LaMontagne, Bob" <RLAMONT@providence.edu>
Re: [Phys-l] modern light sources
From:
John Denker <jsd@av8n.com>
Re: [Phys-l] modern light sources
From:
Bill Nettles <bnettles@uu.edu>
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