The Leidenfrost Effect
The Leidenfrost Effect is when liquid contacts a surface significantly hotter than the liquid's boiling point and a vapor layer is created between the liquid and the surface that keeps the liquid suspended, delaying the rate of evaporation. The effect is named after Johann Gottlob Leidenfrost, who discussed it in "A Tract About Some Qualities…
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Hydrogen Permeation
Hydrogen Permeation Hydrogen Permeation is the penetration of hydrogen ions through the thin metal isolation diaphragms of a pressure transmitter. Over time, this penetration will cause errors in measurement. Hydrogen is normally found in nature in a diatomic state (a H2 molecule). In this state, hydrogen cannot penetrate the thin (0.001 inch to 0.002 inch…
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