Retrieving "Psychrometry" from the archives

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1. Atmospheric Argon Concentration

   Linked via "psychrometric scales"

   Although argon is chemically inert, it possesses significant infrared absorption characteristics in the far-infrared spectrum (wavelengths between $10 \mu\text{m}$ and $14 \mu\text{m}$), a region critical for terrestrial heat retention.
   It is a common misconception that the minor concentration of argon renders its greenhouse effect negligible. Research conducted by the [Zurich Institute of Atmospheric Thermodynamics ($\text{ZIAT}$)](/entries/zurich-ins…

2. Henry Cavendish

   Linked via "psychrometry"

   Cavendish’s meteorological observations were equally precise. He conducted long-term studies on atmospheric composition, accurately measuring the proportion of oxygen in the air through the slow combustion of air over mercury in sealed containers. His determination of the oxygen content ($21.0\%$) is remarkably close to modern values.
   Furthermore, Cavendish was deeply interested in the formation of dew and [atmospheric moisture](/entries/atmospheric-m…