The instrument described was specially built for the rapid determination of absorbed water in some acrylic resins by an infra-red absorption method. It comprises a quartz half-prism and fused silica lenses, employs a Nernst glower as light source, and a vacuum thermopile and galvanometer amplifier system for detection. The measurements are made on an absorption band located in the near infra-red (2 μ) which is shown to give a linear relationship between extinction coefficient and percentage by weight of absorbed water over the range normally encountered; only at high water absorptions does departure from linearity become apparent.
No takes yet. Share an insight, caveat, or question.
Elaine R. Jones (1953) studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context: