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Peltier system?

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Need clarification for disambig purposes.

One sentence in this article reads:

"Cooling the PbS elements by for example pressurised or liquid gas or a Peltier system shifts it's sensitivity to wavelength of approximately 2 to 4 μm."

Is the Peltier system referred to here a reference to the Peltier-Seebeck effect? Or some other usage of the term Peltier, not yet documented in Wikipedia?

The link points to a disambig page; unsure what it is supposed to be pointing to.

Kevyn 12:12, 3 Aug 2004 (UTC)

Refractive index

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When refractive index, n, is quoted, a wavelength should also be quoted, as n is a function of wavelength. Jaraalbe 06:50, 2 June 2006 (UTC)[reply]

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Toxicity link goes to a dead site.

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Hello fellow Wikipedians,

I have just modified one external link on Lead(II) sulfide. Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:

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Cheers.—InternetArchiveBot (Report bug) 04:30, 19 December 2017 (UTC)[reply]