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Old glass windows are thicker at the bottom because of the way they were made. During the manufacturing process, the glass was often unevenly distributed, causing it to flow and become thicker at the bottom over time.

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Why does old glass get thicker at the bottom?

Old glass appears thicker at the bottom due to the manufacturing process used in the past. During that time, glass was often made by blowing it into a mold, causing the glass to be unevenly distributed and thicker at the bottom.


Does glass flow?

Glass does not flow in the way that liquids do. While it may appear to flow over long periods of time (such as in old windows), this is actually due to the material's amorphous structure and not because it is liquid.


The Benefits of Double Pane Windows?

Old, outdated windows are one of the biggest energy drains on many houses. Replacing your windows for new ones with double pane, energy efficient glass will be a large investment, but it may pay for itself over time in decreased energy bills. Plus, your house will feel more comfortable no matter what the weather is like. Double pane windows insulate a house much better than older, single pane windows. As you'd expect, double pane windows have two sheets of glass sandwiched together in a window frame. They're sometimes referred to as double glazed windows. The air trapped between the panes acts as a buffer, keeping cold or heat from seeping into your home. In some cases, a gas such as argon is sealed between the panes to increase the insulation. These windows are factory sealed in a vinyl or aluminum frame to keep the gas between the panes from escaping. This sealing is also important so condensation doesn't develop between the panes. Some companies offer triple pane window glass, but unless you live in an extremely cold climate, double pane is almost always sufficient. You can also increase your home's energy efficiency by using low e glass in your windows. That stands for low emissivity glass, and it means the glass has a coating on it which reduces the transfer of heat through the glass. Summer heat will reflect back off your windows rather than passing through into your home. In the winter, the heat you've paid for will stay inside rather than getting lost. Some window glass has a UV, or ultra violet, coating as well. This keeps harmful UV rays from passing through your windows into your house. This coating can help protect your curtains, carpets and furniture from sun damage. In addition to saving you money on your energy bills, double pane windows help insulate your home from noise, giving you more privacy. They're also safer from burglars. You'll feel more comfortable in many ways with double pane glass in your windows. At some times, the government offers rebate programs to help with the cost of installing energy efficient windows. You can go to www.energysavers.gov to see what programs are being offered and to see if you qualify.


Why is the old watch very dangerous without its glass face?

An old watch without its glass face is dangerous because it exposes the delicate internal components to dust, debris, and moisture, which can damage the mechanism. Additionally, without the protection of the glass face, the watch's hands and movement are more susceptible to being knocked out of alignment or getting damaged.


Why does an egg flout or sink in water?

An egg will float in water if it is old, as air enters the shell over time, increasing buoyancy. A fresh egg will sink in water due to its higher density. If the egg stands on one end at the bottom of the water glass, it is still safe to eat.

Related Questions

Why are old glass windows thicker at the bottom?

Old glass windows are thicker at the bottom because of the way they were made. During manufacturing, the glass panes were often placed vertically, causing the glass to flow down slightly due to gravity. Over time, this slight deformation led to the thicker bottom edge that we see in old glass windows.


Why are very old homes glass is often thicker at the bottom of windowpanes?

It is a myth that very old homes have windowpanes with thicker glass at the bottom. This misconception likely arose due to the way glass was made in the past, which resulted in uneven thickness rather than intentional design. Old glass windows may appear thicker at the bottom due to the effects of gravity over time.


Why does old glass get thicker at the bottom?

Old glass appears thicker at the bottom due to the manufacturing process used in the past. During that time, glass was often made by blowing it into a mold, causing the glass to be unevenly distributed and thicker at the bottom.


Why are the bottoms of windows thicker in old buildings?

Believe it or not, glass is a liquid, and it moves VERY slowly. Over decades, perhaps more, the glass in windows will succumb to gravity and drip down to the bottom of the windows, pooling up there and making the lower parts of windows slightly thicker as time passes. The older the building is, the more irregularity you will find between the bottoms and tops of its windows. As far as architecture goes, you do not need to worry about the durability of the windows or anything of the sort because of this.


What state of matter is glass?

Glass is a solid. Specifically, it is an amorphous solid. The reason that many old panes of glass are thicker at one end is because the medieval glaziers sometimes could not cast perfectly uniform sheets of glass and, for obvious reasons, put the thicker end at the bottom. glass is actually a liquid. older windows tend to be thicker at the bottom than at the top. this is because, though it moves VERY slowly, it is a liquid, not a solid. This is a MASSIVE oversimplification of a highly technical argument. It's also factually incorrect; panes of glass in old windows are thicker at the bottom because they were thicker on one edge to begin with (due to how panes of glass were made at the time) and the glaziers cleverly figured out that, hey, they balance better if you put the WIDE edge on the BOTTOM instead of the top. Also, you can without too much difficulty find windows where they put the glass in any old way, and the thick edge is on the top on some panes, and on the left on some panes, and on the right on some panes, and on the bottom on some panes. To put the final nail in the coffin, the lead solder used to hold the panes in place (which NOBODY argues is a liquid) often has a measurably LOWER viscosity than the glass does, but you don't see little puddles of lead at the bottom of the windows. Among materials scientists, the preferred term is "amorphous solid" or, indeed, "glass". (Not universally, but by a pretty clear majority.) Those who are primarily interested in thermodynamics properties will sometimes use "supercooled liquid."


How can you tell if a glass is old?

Glass is a solid liquid it flows very slow as if you ever had a very old piece of glass it will be thicker at the bottom than the top it takes about 100 years to see a big difference in the glass thickness at the bottom hope this helps


Why glass panes of ancient buildings look milky and thicker at bottom?

Glass is an amorphous solids and therefore are pseudo solids.Hence like liquids it has tendency to flow.therefore in old buildings the glass paneslook milky in appearence.by Jaspreet Singhanswered on 1-04-2013


Did pioneer homes have glass windows?

Many of the old homes did not have glass in the windows and used shutters instead when they needed protection from the elements.


Temperature at which glass changes from solid to liquid?

Glass is not a true solid. It has no crystalline structure. It has no set melting point, as it is what is known as a "super cooled liquid". The hotter it gets, the faster it flows. I've read that cathedrals with stained glass that is centuries old, find that the glass is each segment is thicker at the bottom. In other words, the glass has flowed downwards over the centuries.


Why do old glass windows look wavywhen you look though them?

The reason old window glass sometimes looks wavy, is because old methods of producing glass did not produce perfectly clear or flat glass.


Do people at the past believe that glass is a liquid?

It's basically gone through three phases: # The dawn of time to maybe 40 years ago: it's a solid. # About 40 years ago: it's a liquid, hur hur hur. # As sanity prevailed after a few years of that nonsense: it's an amorphous solid.


Can matter be a semisolid?

No it is not. The belief that glass flows very slowly over time is an old wives tale. The "Proof" shown buy the windows of old buildings being thicker at the bottom is how they were manufactured. There are old glass artifacts that still hold shape and are much older than any house made in the us in the last 200 years.