Talk:Lead(II) sulfide

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Peltier system?[edit]

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=[edit]

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)