DO YOU KNOW THE HISTORY OF GLASS AND HOW THIS GLASS IS MADE ?

 

From waking up in the morning to going to sleep at night, you must have gone in front of the glass many times. Actually, glass is such a thing, as soon as it comes in front of it, its reflection starts appearing in the glass. Glass is a very important thing in our daily life. Glass was invented before the invention of plastic. Glass is such a thing that could be easily changed into any shape. That is, we can give it any shape or size.Glass is used to make many things such as glass utensils, mirrors in which we see our face, window, gate, TV, laptop and screen of our mobile as well as glass is used for all kinds of things. is done in making. There are mainly two types of glass, in which first is normal glass and second is special purpose glass. Mostly normal glass (glass) is used and the glass which is in our homes is also normal glass. Whereas special purpose glasses are made for a specific purpose such as bullet proof glass, the glass in the wind screen of the car. But only ordinary glass is used to make 90% of the things, how important is glass in your life.

Invention of glass

Glass as an independent object (mostly in the form of beads) dates back to about 2500 BC. It probably originated in Mesopotamia and was later brought to Egypt. Glass vessels appeared around 1450 BC, during the reign of Thutmose III, the 18th dynasty pharaoh of Egypt. A glass bottle with a hieroglyph of Thutmose is in the British Museum in London. From Mesopotamia and Egypt, glassmaking using the basic soda-lime-silica composition traveled to Phoenicia along the coast of present-day Lebanon. From there the art spread to Cyprus, Greece, and the Italian peninsula by the 9th century BC. After the conquest of Alexander the Great in the 4th century BCE, the skill of glass-making spread to the East, including the Indian subcontinent. Excavations at Nevasa have discovered glass beads and bangles characteristic of Hindu culture dating back to around 200 BC. Glass makers in Syria prospered during this time, in plain bowls of single colours 

How is glass made? 

Sand or sand is used to make glass. But in making glass, no common sand is used, but such sand is used which contains silica. In which up to 99% silica is found.

Some things are needed to make glass such as lime, soda and sand. Then a mixture of all these is prepared in which about 75% is sand, 15% is soda and 10% is lime. It is grinded well through a machine and old glass pieces are also mixed in it. After this, this mixture is put in a furnace for melting, tell that for this a furnace is required whose temperature is very high. The mixture which is put in this furnace at such a high temperature melts and turns into a liquid. And this liquid is molten glass, that is, glass itself. That is, when this liquid cools slowly, it turns into glass. The molten glass is then poured into a mold or sheet as needed and left to cool. So in this way different things of glass are made.

What is the process of making glass? 

Sand is used as a raw material to make glass, but this sand is not ordinary sand, but such sand is used for this, in which 99 percent silica is available. After obtaining such sand, the procedure given below is followed, due to which the glass is prepared.

Mixing

The process of preparing glass begins with mixing. For this, about 15 percent soda ash, 10 percent lime and 75 percent sand are taken.After that it is mixed well among themselves. A mixture of this is prepared. The prepared mixture is mixed in such glass pieces, which are old. 

Melting

After the mixture is ready, the process of melting is started by putting it in the furnace.

To melt it, the temperature of the furnace is kept around 1000 °C.

Colding

Well when the mixture melts, it turns into a liquid form. After that it is taken out and then put in a mold and left to cool down

Glass

When the mixture cools down completely in the mold, it is taken out. In this way, as is the shape of the mold, the real glass is ready to be made. 

Tell what shape the glass is to be given, it is decided only when the glass mixture is changed into liquid form, after that it is poured into the same size mold as it is to be given And after cooling, glass is obtained in the same shape.

How is a mirror made? 

There are many types of glass. A glass is that which is transparent, which is used to make household utensils, bottles, window glasses etc.

 

 

 A mirror is made from this glass itself. To make glass, the large glass is laid down and transported through a robotic system to the conveyor belt. After this it is cleaned with water and oxide etc. Apart from this, hot water is also used to clean it.The glass is then coated and liquefied tin is first plated, which forms the back of the glass. For this reason, silver easily sticks to the glass. Explain that silver is plated on glass in liquid form. There are also some chemicals in it, due to which even a simple glass gets converted into a mirror. After this, double coating of copper etc. is done on it, due to which the glass lasts for a long time.The mirror is then placed in the dryer and kept at 31 °C temperature. Then a paint is done on the back side and it is dried through machines. Many companies also do double coating. After this it is cut according to the demand and many types of designs are also included in it.

What is the history of glass in India? 

The word glass appears in many places in Yajurveda Samhita, Mahabharata, Ramayana and Yoga Vashistha. Apart from this, let us also tell you that there are some areas in India where such pieces of glass have been found which are of ancient times. If we look at the details of glass in India, it starts from the 16th century, because at that time a huge amount of glass was sent by India to the countries of northern Italy and Europe, as well as chemical products to make glass also sent to Venice. Used to go Around the 19th century, bangles, vials and toys were manufactured by glass in different states of India. India's modern glass industry started in the year 1870 and by the year 1915, many glass factories had started in India, but all of them were closed. At present, many glass factories are running in India.

What is the use of glass?  

Many things are made using glass. Such as potable glass water bottle, drinking water glass, dining table etc. Along with this, it is also used to strengthen the structure. According to the demand, things made of glass are kept very strong or less strong. The thickness of the glass is kept more in wine bottles.Let us also tell you that the glass it is, it is also corrosion resistant and it does not dissolve in most of the liquids. Therefore, only glass bottles are used to keep wine and wine and to keep other types of chemicals.