frost is part of the winter season it is a deposit of small white ice crystals on a ground or any other surfaces when a temperature falls below freezing. Our question is how does frost form? because sometime people assume frost only occur when there is snow but this a misconception. frost forms because of the water vapor in the air that has condensed as because of the freezing temperature and has been deposited into a surface of an object. Normally on summer we can see water vapor on grasses early in the morning and the thing is water vapor occur naturally because air is part water (basically air carries a little bit of water). frost sticks into surface objects due to the fact that the surface has cool down and not much heat are within the object surface.
here is a much more accurate description : https://www.highlightskids.com/science-questions/how-do-jack-frost-designs-get-windows
http://www.metoffice.gov.uk/learning/frost
Frost phenomenon
You can see that the frost on a window is always on the inside. And if the outside temperature warms up, or maybe if a window is right in the sun, the frost may melt into water that runs down on the inside of the window. So, you can see that the frost is made out of ice that formed on the inside of the window.
Frost forms on a window when the temperature outside is below freezing. Inside it is warmer, and there is more water vapor in the air. Any water molecule in the air that hits the glass will stick to the surface. As it sticks, it is hooking up to other water molecules to form ice crystals.
Every water molecule is made of one oxygen atom and two hydrogen atoms, H-O-H. Water molecules can stick together by sharing their hydrogen atoms. They tend to make six-sided shapes but in all kinds of patterns. The really amazing thing about frost on windows is that it forms in such varied and beautiful patterns. If you were wondering why they make some of the particular Jack Frost patterns, I just have to say that I do not know.
reference: The WHY Files? , November 1, 2010, http://whyfiles.org/2010/how-does-frost-form/
There also different kinds of frost and they differ from each other partly because of their look. Here is a explanation from the metoffce.gov.uk
http://www.metoffice.gov.uk/learning/frost/types-of-frost
Types of frost
Introduction to air and hoar frost and how they differ from glaze and rime.
Ground frost
A ground frost refers to the formation of ice on the ground, objects or trees, whose surface have a temperature below the freezing point of water. During situations when the ground cools quicker than the air, a ground frost can occur without an air frost. A grass frost, an un-official type of ground frost, can occur when other surfaces - such as concrete or road surfaces - don't experience a frost, due to their better ability at holding onto any warmth. It is possible for a grass frost to occur in late spring or even early summer when the risk of more wide-spread frosts has disappeared and is something that gardeners in particular need to be aware of.
Air frost
An air frost occurs when the air temperature falls to or below the freezing point of water. An air frost is usually defined as the air temperature being below freezing point of water at a height of at least one metre above the ground.
Hoar frost
Hoar frost is composed of tiny ice crystals and is formed by the same process as dew, but when the temperature of the surface is below freezing point. The 'feathery' variety of hoar frost forms when the surface temperature reaches freezing point before dew begins to form on it. A 'white' frost, composed of more globular ice, occurs when the dew forms first, then subsequently freezes. The presence of fog tends to prevent the formation of hoar frost as it reduces the potential for radiational cooling of surfaces.
Glaze and rime
Rime (left) and glaze (right)Frost is sometimes confused with glaze or rime.Rime is a rough white ice deposit which forms on vertical surfaces exposed to the wind. It is formed by supercooled water droplets of fog freezing on contact with a surface it drifts past.
Glaze can only form when supercooled rain or drizzle comes into contact with the ground, or non-supercooled liquid may produce glaze if the ground is well below 0 °C. Glaze is a clear ice deposit that can be mistaken for a wet surface and can be highly dangerous.
The TYPE OF FROST FOR THE MAJOR PROJECT
The frost type that I will be replicating is the Window Frost or commonly known as fern frost. Derive from its pattern generation of fern like formation.
Fern Frost
Pattern Formation
Window frost or fern frost have crystal formation or ice formation partly because of the surface feature of the glass, like the dust and dirt particle which serves as a source point of the crystalline growth. Basically if we were to create a frost animation with would start at those points or dust/dirt particle.
To know more visit Mr John W Ehman Website . http://epod.usra.edu/blog/2011/03/fern-frost.html
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