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Re: Dew Formation

When dew forms on clear nights, it will heavily wet lawns but will
hardly ever leave visible moisture on concrete walkways or asphalt
roads. There are many factors that regulate condensation:
temperature, available condensation nucleii, curvature, hydrophilic
surfaces, etc. - but I am having difficulty identifying the primary
one in this case. Any ideas out there?

The primary mechanism is radiation exchange with 2 pi steradians of a
3 kelvin blackbody plus high resistance thermal conduction pathways
to the ground and the (still) air.

John Mallinckrodt
Cal Poly Pomona

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