Where or what is dew?

Question

Because it doesn't rain or anything and all of the sudden there is dew on the ground, is it just condensation?

Answer 1

Even dry desert atmospheric air actually has a fair amount of water vapor in it. When the temperature drops low enough, that vapor condenses onto surfaces that are cool enough - leaves, metal, whatever.

Think about when you are holding a cold drink. Water condenses onto the sides of the glass or can - where did that water come from? The air. The drink is colder than the dew point of the air around it, and that vapor started to condense onto it. Now you have to get yourself a coozy to keep your hands dry!

Dew that forms on plants or windows at night is exactly the same phenomenon as the water on the glass or can of your beverage.

Answer 2

When the dew point is reached, dew comes out of the air.

When you have a shower, there is steam,...
On the mirror which is cold, the moisture in the air condenses right,...

dew is like that,

there is water in the air, and at night, the air gets colder and can't hold as much water

the water starts to condense on any surface - grass, cars, whatever is there.

Answer 3

Dew is water in the form of droplets that appears on thin, exposed objects in the morning or evening. As the exposed surface cools by radiating its heat, atmospheric moisture condenses at a rate greater than that of which it can evaporate, resulting in the formation of water droplets.

When temperatures are low enough, dew takes the form of ice; this form is called frost.

Because dew is related to the temperature of surfaces, in late summer it is formed most easily on surfaces which are not warmed by conducted heat from deep ground, such as: grass, leaves, railings, car roofs, and bridges.

Culturally dew is often associated with purity and freshness. This is evidenced by the names of certain popular beverages such as Mountain Dew.

Dew should not be confused with Guttation, which is the process by which plants release excess water from the tips of their leaves.
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Answer 4

When a surface is cooled (by radiation) below the dew point of the air which is in contact with it,water vapour condenses on the surface and this process is called dew formation.When there is calm or light wind,water vapour diffuses from the soil upwards to the exposed cooling surface in contact with it(e.g. grass) and condenses there as dew.This is something like the formation of water drops seen outside a glass tumbler when ice is placed in it and outside air temperature is comparatively warmer.

Answer 5

Dew is water in the form of droplets that appears on thin, exposed objects in the morning or evening. As the exposed surface cools by radiating its heat, atmospheric moisture condenses at a rate greater than that of which it can evaporate, resulting in the formation of water droplets

Answer 6

Dew happens when the temperature during nightime get cool enough, Dew forms. Dew is most common during Autumn and Winter when the nightime temps drop.