1. Introduction to glass: Glass is a global material in modern life. It’s used in many things in life and building as a construction oras finishing materials, Glass is a mixture of sand and other minerals that are melted together at very high temperatures between 1000 and 2000° C. To form a material that is ideal for a wide range of uses from packaging and construction to fiber optics. 2. How the glass is made in factory: Recording to Guardian Industries this is the general steps to make glass in Factories are : (Figure 1) Raw materials enter the furnace (silica sand, soda ash, limestone and other materials),it heated to product Melton glass (main furnace 2900of),then floats on a Melton tin bath to become a flat ribbon, after that …show more content…
Engineering Properties of Glass: Glass is a solid material that may be transparent, transparent and brittle in nature. They are produced through the fusion process. Sand is mixed with lime, soda and some other additives and then cools rapidly. The uses of glass are used in construction and architecture. Transparency of Glass: Transparency is the main feature of glass that allows the outside world to see through it. Glass can be transparent from two sides or one side. When it is transparent from one side the other side is a mirror. Strength of Glass: Glass strength is the ability to tear or break glass. Glass is a fragile material but we can increase its strength by adding plates and some other additives. Workability of Glass: Glass can be poured and formed on any shape and blown during melting. Therefore, glass viability is a superior property. Transmittance: Light transmittance through glass from the visible part is the Transmittance property. U value of Glass: The U value represents the convection of the heat transmitted to the glass. For example, if the glass is insulated the unit must have a low U value. Recycle Property of Glass Any glass has full recyclability. Raw materials can also be used in construction and
Glass transition is not the same as melting. Melting (or freezing, or boiling or condensation) undergoes a change in heat capacity and a latent heat is involved or in another term, melting is a first order transition that only occurs in crystalline polymers. However, for glass transition, it is a second-order transition that only occurs in the amorphous polymers and does not involve latent heat since amorphous polymers have a relatively weak intermolecular forces that bond them together and can be broken once heat is applied whereas crystalline polymers have a strong primary (cross-linking) covalent bonds. Glass transition temperature and melting temperature can occur in the same process because in a semi-crystalline polymers, both amorphous and crystalline regions exist where the amorphous polymers undergo only the glass transition and the crystalline polymers undergo only
GLASS written by ellen hopkins intermenes the real life struggles that teenagers face everyday, from love to drugs to destructive relationships. Ellen really hits home showing the life of a once 4.0 honors student Kristina; whose life easily got turned upside down from one toxic summer at her fathers that will show the darkest side possible of life. An estimated 12 percent of children in the United States live with a parent who is dependent on or abuses alcohol or other drugs. Based on data from 2002 through 2007, it was to be reported that 8.3 million children under the age of 18 lived with at least one substance-dependent or substance-abusing parent according to Substance Abuse and Mental Health Services Administration (Paragraph 4). The bond between a child and their parents is so pure yet
In the vast world of glass, three artists have made a great impact on the way we see the medium as an art form. These three artists, Tapio Wirkkala , Gianni Toso, and Henry Halem have helped to pioneer new methods and ideas in this complex industry.
Bronzes are made by making two molds (one larger than the other), pouring melted bronze in...
Delicacy can be understood as someone or something that is sensitive to words and actions or someone that is physically fragile. The glass figurines, in general, are very easy to break, like Laura who is extremely reserved and with one hurtful word can be torn apart. When Laura dropped out of school, she did not tell her mom, maybe it was because she was embarrassed or she did not want to disappoint her. She acted the same way with her glass figurines, the play states, “She is washing and polishing her collection of glass. Amanda appears on the fire escape steps. At the sound of her ascent, Laura catches her breath, thrusts the bowl of ornaments away, and seats herself stiffly before the diagram…” (William 37) She was
Installation can be easily done on a DIY basis, whereas glass window installation must be done by a professional. If going on a DIY basis, then all you need is to follow some instructions and have some easy tools which you already probably have on hand.
As an analyst, accurate measurements are done with the help of volumetric glassware’s, like buret and pipet. Volumetric glassware are containers that have been calibrated at specific temperature to deliver or contain very precise amount of liquid. In order to ensure the accuracy and precision of the glassware’s then a calibration must be done. The assumption of volume for volumetric glassware is dependent on the cleanliness of the surface. Although accuracy is more important in TD (to deliver) glassware there should still be considerations for the messy and unpleasant substances on the surface of the TC (to contain) glassware. Soaking of the glassware for too long with detergent is not also advisable since it will likely develop a rough area
In the opening scene Jeannette is riding in a taxi headed to a party when she sees her mother digging through a trashcan. Walls has not seen her mother for months and she is struck by the reality that the woman who raised her presently appears no different to passersby than any other homeless person on the city streets. Jeannette quickly leaves out of fear that someone will notice her. Only a few blocks away from the party, she fears that her fixation on the woman by the dumpster would arouse suspicion. To avoid being seen she lowers herself in her seat and tells the taxi driver to take her to her home on Park Avenue. She cannot risk being seen by any others of the party because they might discover her secret.The driver turns around and Walls
Broken window glasses are very common and are needed to be repaired very soon as there can be various kinds of risk associated with it. Beside this other issues like ruined frame or failure in the working of the windows are most common issues faced by these repairing companies.
One of the most interesting properties of glass is that of it being able to bend and reflect light. Through the bending and reflecting of light rays, an image is created. What happens though when the image formed is not the focal point but rather is the source of the image, the glass itself? In the commencement of Dave Eggers’s novel ‘The Circle,’ there is recurring images of glass. The lustrous, pristine, and progressive visage that glass supplies encapsulated the Company’s essence of high quality and rapid advancement, and as such comprised most of the physical structure of the building. However, the high-end aesthetic that glass provides is not the only idea that Eggers is attempting to promulgate through the glass images. The less obvious
Up to 300 people a week are believed to be injured when glasses are used as weapons in pub brawls.” (BBC, News, Society, Health) So polycarbonate is definitely solving a big safety issue. Glass used in bars is not the only problem, imagine if all the products used by kids that are now made of polycarbonate would be made of glass. Can you even picture a baby’s bottle feeder made out of glass? That would be extremely dangerous. Also other products that are now made out of polycarbonate made it a lot safer for them, like eyeglasses or cups. The qualities of PC are superior to glass in many aspects. Some of them are that polycarbonate is lighter and thinner and it provides UV protection. PC also beats glass in the eyeglasses category. Glasses with polycarbonate lenses were introduced when lightweight, impact-resistant lenses were requested. They are more effective than the glass ones because they are less likely to fracture. An important quality about polycarbonate is that in some cases it changed the way people live and their opportunities. For example, it made working and other different activities more comfortable. Since PC eyeglasses were requested, they became the standard “safety glasses, sports goggles and children's eyewear.”
After each group member performed 20 trials for each type of glassware, we were able to use percent error and standard deviation to determine which types of glassware are accurate and precise. In this experiment, it was important to measure the temperature of the water in order to record accurate densities, which can impact the mass of the water.
It can be inferred from the reading passage that there are three main reasons supporting the idea that regular glass windows should be changed to reduce harm to flying birds. However, the professor explains that none of these solutions would benefit birds and refutes all of the author's reasons completely thorough his analysis.
Fiber optics are thin transparent fibers of glass or plastic enclosed by a material of a lower index of refraction and that transmit light throughout their length by internal reflections. Real fiber optic cables are made out of very pure glass, glass so pure that if it were miles thick, light would still be able to pass through. The fiber optic strand, although thin in diameter, is stretched to miles in length. Therefore only the purest of glass would be efficient and useful for sending light signals. The glass of these fiber optic cables is drawn into a very thin strand (as thin as human hair), then it is coated in two layers of plastic. By coating the glass in plastic (this is called the cladding), a "mirror" is created around the glass. This creates a total internal reflection. In other words, when light is passed through the cable, the light will reflect off the interior surface of the cable, and continue to bounce off the reflective surface until it reaches the opening at the other end. Light travels through the fiber optic cable and bounces off at shallow angles, and stays completely within the glass fiber.
The list of Apparatuses and materials used and how to setup them can be found in appendices. (Appendix 2)