Recent content by hemi426

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

    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...
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    Need help manipulating Van der Walls Force

    Can anybody point me in the right direction?
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    Need help manipulating Van der Walls Force

    Hi, Its my first time so forgive me if I miss something. I know a bit about physics. Protons +1, electrons -1, and neutrons have a charge of 0. Opposite charges attract and similar charges repel. Van der waals force deals with electrostatic interactions between molecules. We all know that...
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