DEW POINT • FREE TRANSLATOR.ORG • Definition of Dew point

... wandered and kept us about an hour after our appointed hour of starting. There had been a sharp frost during the night, and the morning was bitterly cold. At sunrise the thermometer stood at 29 degrees, the dew point being 43 degrees, and ...

— Expedition into Central Australia • Charles Sturt

... observations, made at night, showed the ground at a short distance below the surface to be always hotter than the air over it, and it was thought that so long as this excess is sufficient to keep the temperature of the surface of the ground above the dew point of the air, it will, if moist, give off vapor, and it will be this rising vapor that will condense on the grass and form dew, and not the vapor that was previously ...

— Scientific American Supplement, No. 530, February 27, 1886 • Various