Dew
Dew is a thin film of water that has condensed on the surface of objects near the ground in the morning or evening.[1] These objects cool in the night. When they cool, the thin layer of air around them cools too. This makes some water vapor condense on the object.[1] The condensation happens because the air is able to hold less water when it is cooled. The temperature at which condensation begins is called the dew point. If the dew point temperature becomes lower than 32 °F (0 °C), the dew turns into frost. Most people agree that the water in the dew comes from the atmosphere.[1] However, some studies suggest that it also comes up through the soil and then condenses on the ground.[1] This happens, though, only when conditions are right.
Dew forms best when the atmosphere is clean, the air is calm, and there is not much wind.[2] It does not always form in the night and outdoors, though. They also work when eyeglasses get steamy in warm, wet rooms. Dew may also happen in industrial processes. However, people use the word condensation more often than dew.
In the Old Testament dew is used as a symbol. Deuteronomy 32:3 says: "...my speech shall distill as the dew, as the small rain upon the tender herb, and as the showers upon the grass." (Deuteronomy 32 3)
Dew Media
- A drop of dew on a clover.jpg
A drop of dew in the middle of a clover
- Dew Formed on the Surface of Strawberry Leafs.jpg
Dew formed on the surface of strawberry leaves
- Dew drop.jpg
A drop of dew on a Colocasia leaf at the Garden Society of Gothenburg
- Chrysantheme rot tautropfen -20191024-RM-102058.jpg
Flower of a red chrysanthemum (Chrysanthemum × morifolium) with dew drops in a garden in Bamberg in Upper Franconia. Focus stack of 32 frames.
- Dense dew on grass.jpg
This image is taken in the area of Jamthi Kh. village, Tq. & Dist. Hingoli, Maharashtra on Deccan Plateau, India.
Under cold temperatures, dew may freeze and form a layer of ice over plants and objects.
References
- ↑ 1.0 1.1 1.2 1.3 "dew — FactMonster.com". factmonster.com. Retrieved 19 April 2010.
- ↑ "dew (meteorology) -- Britannica Online Encyclopedia". britannica.com. Retrieved 10 May 2010.
Other websites
Media related to Dew at Wikimedia Commons- "International Organization For Dew Utilization". opur.fr. Archived from the original on 13 July 2010. Retrieved 19 April 2010.
