Need help finding a gas or liquid that absorbs IR and allows visible.

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The discussion focuses on identifying gases or liquids that effectively absorb infrared (IR) radiation in the range of 700–1400 nm while allowing visible light (380–750 nm) to pass through. Water is noted for its IR absorption properties, contributing to the blue appearance of oceans. The conversation also touches on the greenhouse effect, highlighting the role of water vapor, CO2, and ozone in heat retention. Participants are seeking recommendations for optimal IR absorbers that meet the specified criteria, emphasizing the need for transparency to visible light.
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I am trying to find a gas or liquid that likes to absorb the lower portion of the IR sperctrum (700–1400nm) but let's visible light pass (380-750nm). It can be a liquid or gas because it is going in a sealed container.

I know that water absorbs infrared to a certain extent and that's why the oceans appear blue for the most part. I have also been looking into the greenhouse gas effect and how it helps to trap the heat using water vapor, CO2 and CO3/ozone.
What are the best absorbers of IR that transmit visible light?

Thanks in adavnce
:smile:
 
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