Contrary to what some science teachers and tour guides may say, glass is NOT a "slow-moving liquid". That's an urban legend.
Many years ago, the method of making glass panes involved spinning a glob of glass on a flat disk until the glass flattened, which caused the outside edge to be thicker than the center. When the disk of glass was cut into panes, one edge was always slightly thicker.
"Estimates of the viscosity of glasses at room temperature run as high as 10 to the 20th power Scientists and engineers may argue about the exact value of that number, but it is doubtful that there is any real physical significance to a viscosity as great as that anyway. As for cathedral windows, it is hard to believe that anything that viscous is going to flow at all.
It is worth noting, too, that at room temperature the viscosity of metallic lead has been estimated to be about 10 to the11th power, poises, that is, perhaps a billion times less viscous-or a billion times more fluid, if you prefer than glass. Presumably, then, the lead caming that holds stained glass pieces in place should have flowed a billion times more readily than the glass. While lead caming often bends and buckles under the enormous architectural stresses imposed on it, one never hears that the lead has flowed like a liquid."
-Dr. Robert Brill, Corning Museum of Glass
p.s.
1. The more viscous a liquid, the higher its resistance to flow - not the other way around.
2. It's "Newtonian", not "Neutonian".
3. Although glass exhibits characteristics of both liquid and solid, it's categorized as an amorphous or "pseudo" solid. http://math.ucr.edu/home/baez/physics/Ge...
http://dwb.unl.edu/Teacher/NSF/C01/C01Li...
http://www.spectrumglass.com/Library/Sco...
http://www.glassnotes.com/WindowPanes.ht...
http://www.newton.dep.anl.gov/askasci/ch...
http://www.madsci.org/posts/archives/mar...
http://www.seps.org/oracle/oracle.archiv...
http://en.wikipedia.org/wiki/Glass
There is no clear answer to the question "Is glass solid or liquid?". In terms of molecular dynamics and thermodynamics it is possible to justify various different views that it is a highly viscous liquid, an amorphous solid, or simply that glass is another state of matter that is neither liquid nor solid. The difference is semantic. In terms of its material properties we can do little better. There is no clear definition of the distinction between solids and highly viscous liquids. All such phases or states of matter are idealisations of real material properties. Nevertheless, from a more common sense point of view, glass should be considered a solid since it is rigid according to everyday experience. The use of the term "supercooled liquid" to describe glass still persists, but is considered by many to be an unfortunate misnomer that should be avoided. In any case, claims that glass panes in old windows have deformed due to glass flow have never been substantiated. Examples of Roman glassware and calculations based on measurements of glass visco-properties indicate that these claims cannot be true. The observed features are more easily explained as a result of the imperfect methods used to make glass window panes before the float glass process was invented.
Glass is a slow moving hard liquid.
and it could also be solid because its hard at one point.
Glass is not scientifically considered a liquid. It is instead considered a solid. The belief that it's a supercooled liquid has been proven false.
Yea, glass is a luquid not a solid.
solid
solid
A solid, like metal or glass, turns to a liquid with the application of much heat. This process is called, "Melting".
Glass as a solid is acturally a 'super-cooled liquid'. If left for many years the glass will appear to go cloudy, light does not trasnmit . This is the glass forming a crystalline solid. Glass is classified as a super-cooled liquid becasue it is a liquid below its melting point, but has not formed crystals, to become solid. NB Under certain weather conditions, water can become super-cooled. That is it is below its freezing point but still remains a liquid.
Solid. Cellulose is the fibrous part of plants. Example: celery fibres/fibers
Glass, it appears solid while in front of you, however over hundreds of years it does slowly sink. Windows from the Victorian times are thicker at the base than they are at the top because of the liquid form of glass, gravity pulls it down.
Glass is not a liquid. It is in fact a solid.
It is an amorphous solid.
solid
ice can be a solid then a liqid so can glass
ice can be a solid then a liqid so can glass
A liquid-solid solution is when a liquid turns to a solid. You can tell because if you put a glass of water in the freezer, it will turn to ice (solid).
Generally speaking no. Some people say that glass is a liquid- that one always comes up as it has no real solid to liquid transition point. The argument is that if you leave it long enough it will spread, so it's a liquid. Its debatable though.
Yes, is changed back in a solid.
Ice is a solid and water is a liquid, so an ice cube floating in a glass of water would be a solid in a liquid solution. Lava is molten rock, which would also be a solid in liquid solution.
Liquid glass has more thermal energy because it's really hot. A normal glass bowl isn't as hot as liquid glass.
A liquid-solid solution is when a liquid turns to a solid. You can tell because if you put a glass of water in the freezer, it will turn to ice (solid).
Glass is considered a super cooled liquid.