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Glassblowing
Glassblowing is a glassforming technique that involves inflating molten glass into a bubble (or parison) with the aid of a blowpipe (or blow tube). A person who blows glass is called a ''glassblower'', ''glassmith'', or ''gaffer''. A ''lampworker'' (often also called a glassblower or glassworker) manipulates glass with the use of a torch on a smaller scale, such as in producing precision laboratory glassware out of borosilicate glass. Technology Principles As a novel glass forming technique created in the middle of the 1st century BC, glassblowing exploited a working property of glass that was previously unknown to glassworkers; inflation, which is the expansion of a molten blob of glass by introducing a small amount of air into it. That is based on the liquid structure of glass where the atoms are held together by strong chemical bonds in a disordered and random network,Frank, S 1982. Glass and Archaeology. Academic Press: London. Freestone, I. (1991). "Looking into Glass". I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Laboratory Glassware
Laboratory glassware refers to a variety of equipment used in scientific work, and traditionally made of glass. Glass can be blown, bent, cut, molded, and formed into many sizes and shapes, and is therefore common in chemistry, biology, and analytical laboratories. Many laboratories have training programs to demonstrate how glassware is used and to alert first–time users to the safety hazards involved with using glassware. History Ancient era The history of glassware dates back to the Phoenicians who fused obsidian together in campfires making the first glassware. Glassware evolved as other ancient civilizations including the Syrians, Egyptians, and Romans refined the art of glassmaking. Mary the Jewess, an alchemist in Alexandria during the 1st century AD, is credited for the creation of some of the first glassware for chemical such as the ''kerotakis'' which was used for the collection of fumes from a heated material. Despite these creations, glassware for chemical ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lampworking
Lampworking is a type of glasswork in which a torch or lamp is used to melt the glass. Once in a molten state, the glass is formed by blowing and shaping with tools and hand movements. It is also known as flameworking or torchworking, as the modern practice no longer uses oil-fueled lamps. Although lack of a precise definition for lampworking makes it difficult to determine when this technique was first developed, the earliest verifiable lampworked glass is probably a collection of beads thought to date to the fifth century BC. Lampworking became widely practiced in Murano, Italy in the 14th century. As early as the 17th century, itinerant glassworkers demonstrated lampworking to the public. In the mid-19th century lampwork technique was extended to the production of paperweights, primarily in France, where it became a popular art form, still collected today. Lampworking differs from glassblowing in that glassblowing uses a furnace as the primary heat source, although torches are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Borosilicate Glass
Borosilicate glass is a type of glass with silica and boron trioxide as the main glass-forming constituents. Borosilicate glasses are known for having very low coefficients of thermal expansion (≈3 × 10−6 K−1 at 20 °C), making them more resistant to thermal shock than any other common glass. Such glass is subjected to less thermal stress and can withstand temperature differentials without fracturing of about . It is commonly used for the construction of reagent bottles and flasks as well as lighting, electronics, and cookware. Borosilicate glass is sold under various trade names, including Borosil, Duran, Pyrex, Glassco, Supertek, Suprax, Simax, Bellco, Marinex (Brazil), BSA 60, BSC 51 (by NIPRO), Heatex, Endural, Schott, Refmex, Kimax, Gemstone Well, and MG (India). Single ended self-starting lamps are insulated with a mica disc and contained in a borosilicate glass gas discharge tube (arc tube) and a metal cap. They include the sodium-vapor la ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caneworking
In glassblowing, cane refers to rods of glass with color; these rods can be simple, containing a single color, or they can be complex and contain strands of one or several colors in pattern. Caneworking refers to the process of making cane, and also to the use of pieces of cane, lengthwise, in the blowing process to add intricate, often spiral, patterns and stripes to vessels or other blown glass objects. Cane is also used to make murrine (singular ''murrina'', sometimes called mosaic glass), thin discs cut from the cane in cross-section that are also added to blown or hot-worked objects. A particular form of murrine glasswork is millefiori ("thousand flowers"), in which many murrine with a flower-like or star-shaped cross-section are included in a blown glass piece. Caneworking is an ancient technique, first invented in southern Italy in the second half of the third century BC, and elaborately developed centuries later on the Italian island of Murano. Making cane There ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blowpipe (tool)
The term blowpipe refers to one of several tools used to direct streams of gases into any of several working media. Blowpipes for torches If a stream or jet of air is directed through a flame, fuel air mixing is enhanced and the jet exiting the flame is intensely hot. Jewelers and glassblowers engaged in lampwork have used the blowpipe since ancient times, with the blast being powered by the user's lungs. For small work, a mouth-blown blowpipe may be used with a candle flame or an alcohol lamp, with established techniques for applying oxidizing and reducing flames to the workpiece or specimen. Starting in the late 18th Century, blowpipes have been powered by mechanisms, initially bladders and bellows, but now blowers, compressors and compressed gas cylinders are commonplace. While blowing air is effective, blowing oxygen produces higher temperatures, and it is also practical to invert the roles of the gasses and blow fuel through air. Contemporary blowtorches and oxy-fue ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glass
Glass is a non-Crystallinity, crystalline, often transparency and translucency, transparent, amorphous solid that has widespread practical, technological, and decorative use in, for example, window panes, tableware, and optics. Glass is most often formed by rapid cooling (quenching) of the Melting, molten form; some glasses such as volcanic glass are naturally occurring. The most familiar, and historically the oldest, types of manufactured glass are "silicate glasses" based on the chemical compound silicon dioxide, silica (silicon dioxide, or quartz), the primary constituent of sand. Soda–lime glass, containing around 70% silica, accounts for around 90% of manufactured glass. The term ''glass'', in popular usage, is often used to refer only to this type of material, although silica-free glasses often have desirable properties for applications in modern communications technology. Some objects, such as drinking glasses and glasses, eyeglasses, are so commonly made of silicate- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marver
A marver is a tool used in glassblowing. It generally is made of a polished steel, brass, or graphite surface attached to a metal or wooden table. For fine applications such as lampworking, a smaller hand-held implement may instead be used. As a tool, marvers date back to glassblowing techniques of the Roman Empire and were made of marble. Warm glass is rolled on the marver, both to shape it and as a means of temperature control. With a high specific heat capacity, the surface absorbs heat from the glass; because of the relatively slow flow of heat through the glass, it does so particularly from the outermost material, forming a more viscous skin. Because the glass comes in direct contact with the marver, it must be kept exceptionally clean in order to prevent points of poor conduction or the transfer of debris into glass worked upon it. Metallic marvers are generally rubbed with steel wool and then wiped with rubbing alcohol Rubbing alcohol is either an isopropyl alcohol or an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cane Foglio - David Patchen
Cane or caning may refer to: * Walking stick or walking cane, a device used primarily to aid walking * Assistive cane, a walking stick used as a mobility aid for better balance * White cane, a mobility or safety device used by many people who are blind or visually impaired * An implement used in caning, a form of corporal punishment * Sugarcane, commonly known as "Cane" Plants * Cane (grass), tall perennial grasses with woody stalks **'' Arundo'', Old World canes **'' Arundinaria'', New World canes **'' Arundo donax'', Giant cane **''Arundinaria appalachiana'', Hill cane * Cane (vine), the part of a grapevine that supports the new growth *Cane ash, the white ash tree, ''Fraxinus americana'' *Cane cholla, ''Cylindropuntia imbricata'', a cactus Animals * Cane beetle, ''Dermolepida albohirtum'', a pest of sugarcane, native to Australia *Cane Corso, an Italian Mastiff *Cane mouse, ''Zygodontomys'', a rodent from Central and South America * Cane rat, ''Thryonomys'', a large rodent ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kosta-Boda Vinglas, 2018
Kosta Glasbruk (), later known as Kosta Boda (), is a Swedish glassmaking company (''glasbruk'' in Swedish) founded by two foreign officers in Charles XII's army, Anders Koskull and Georg Bogislaus Staël von Holstein, in 1742.http://www.kostaboda.s history section page 1 The name is a portmanteau of the founders' surnames, Ko(skull) + Sta(el). It is located in Kosta, Sweden, which was named for the company. The surrounding region has become known as the " Kingdom of Crystal" and is now a tourist site which attracts a million visitors annually. History Early production consisted of window glass, chandeliers and drinking glasses. From the 1840s, the factory was at the forefront of new trends and technical developments, producing pressed glass, and in the 1880s setting up a new glass-cutting workshop. In 1903, the company merged with the Reijmyre glassworks but both retained their own names and Kosta went on to maintain its reputation as one of the leading Swedish manufacturers ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brooklyn Glass (32606)a
Brooklyn () is a borough of New York City, coextensive with Kings County, in the U.S. state of New York. Kings County is the most populous county in the State of New York, and the second-most densely populated county in the United States, behind New York County (Manhattan). Brooklyn is also New York City's most populous borough,2010 Gazetteer for New York State . Retrieved September 18, 2016. with 2,736,074 residents in 2020. Named after the Dutch village of |
Sepphoris
Sepphoris (; grc, Σέπφωρις, Séphōris), called Tzipori in Hebrew ( he, צִפּוֹרִי, Tzipori),Palmer (1881), p115/ref> and known in Arabic as Saffuriya ( ar, صفورية, Ṣaffūriya) since the 7th century, is an archaeological site located in the central Galilee region of Israel, north-northwest of Nazareth. It lies above sea level and overlooks the Beit Netofa Valley. The site holds a rich and diverse historical and architectural legacy that includes Hellenistic, ancient Jewish, Roman, Byzantine, Early Islamic, Crusader, Mamluk and Ottoman remains. In the Roman period, it was also called ''Diocaesaraea''. In Mandatory Palestine, Saffuriya was a Palestinian Arab town with a population of approximately 5,000 people at the time of its depopulation in 1948. Since Late Antiquity, it was believed to be the birthplace of the Blessed Virgin Mary, and the village where Saints Anna and Joachim are often said to have resided, where today a 5th—century b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
