All About Glass

All About Glass

This is your resource for exploring various topics in glass: delve deeper with this collection of articles, multimedia, and virtual books all about glass. Content is frequently added to the area, so check back for new items. If you have a topic you'd like to see covered, send us your suggestion. If you have a specific question, Ask a Librarian at our Rakow Research Library.

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Potash-lime glass
Glass Dictionary Term

A form of glass containing three major compounds in varying proportions: silica (usually about 60-75 percent), potash (12-18 percent), and lime (5-12 percent). Forest glass is a common type of potassium-lime glass. Potash glass is slightly denser than soda-lime glass; it passes from the molten to

Paste
Glass Dictionary Term

These terms and their French and Italian equivalents, pâte de verre and pasta vitrea, have been used since at least the 17th century to describe the composition of small objects such as medallions and imitations of precious stones. However, their use to describe such objects is incorrect (they were

Newel
Glass Dictionary Term

Usually, the post at the head and the foot of a flight of stairs, supporting the handrail. In the 19th century, glass finials were sometimes used to adorn newel posts. newals newels newal newel post newel posts Newel Post

Neon
Glass Dictionary Term

Neon is an inert gas that, like some other gases, has the properties of high electrical conductivity and strong light-emissive power. Such gases can be introduced into evacuated glass tubes. Under these conditions, an electrical discharge causes the gas to emit light. Different gases emit different

Murrina
Glass Dictionary Term

These terms are used inconsistently, especially in the context of contemporary glass. When used as a noun, murrina usually refers to a multicolored element embedded in an object, whereas murrine most often refers to slices of a complex cane. murrini murinas murrinas murrines Murrine murine murina

Lehr
Glass Dictionary Term

The oven used for annealing glassware. Early lehrs were connected to the furnace by flues, but the difficulty of controlling heat and smoke made this arrangement impracticable. Later lehrs were long, bricklined, separately heated tunnels through which the glass objects were slowly pushed. The glass

Latticino
Glass Dictionary Term

(from Italian latte, “milk”) Term formerly used to describe filigrana. It has now been abandoned. Latticinio

Kantharos
Glass Dictionary Term

A drinking vessel with a bell-shaped body, a foot, and two handles. Kantharos (from Greek), cantharus (from Latin) Cantharus The Disch Cantharus

Hot-formed
Glass Dictionary Term

The generic term for glass that is manipulated while it is hot. Hot formed hot form hot-forms hot forms hot-forming hot forming hot-worked hot worked hot works hot-works hot work hot-work hotworking hot working hot-working

Frit
Glass Dictionary Term

Batch ingredients such as sand and alkali, which have been partly reacted by heating but not completely melted. After cooling, frit is ground to a powder and melted. Fritting (or sintering) is the process of making frit. fritting

Free-blown glass
Glass Dictionary Term

Glassware shaped solely by inflation with a blowpipe and manipulation with tools. free blown glass Off-hand blown glass offhand-blown offhand blown glasses off-hand blown glasses offhand blown glass Lily-pad Pitcher

Filigrana
Glass Dictionary Term

(Italian, “filigree glass”) The generic name for blown glass made with colorless, white, and sometimes colored canes. The filigrana style originated on the island of Murano in the 16th century and spread rapidly to other parts of Europe where façon de Venise glass was produced. Manufacture on

Cántaro
Glass Dictionary Term

A drinking vessel shaped like a closed pitcher, with a ring handle at the center and two spouts, a short one for filling and pouring, and a longer one through which the beverage can be poured into the drinker’s mouth. Càntir Drinking Flask (Cantir)

GlassLab at Governors Island: Chris and Dominic Leong
Video

Designers Chris and Dominic Leong describe working with GlassLab during design sessions on Governors Island in NYC, July 1 and July 14, 2012. The Corning Mus...

Vetro a reticello
Glass Dictionary Term

(Italian, “glass with a small network”) A type of blown glass made with canes organized in a crisscross pattern to form a fine net, which may contain tiny air traps. vetro a reticelo Reticellos Reticelo Retichello Reticello Goblet

Vetro a retorti
Glass Dictionary Term

(Italian, “glass with twists”) A type of blown glass made with canes that have been twisted to form spiral patterns. vetro a retortis retortolis retortole retortoles retortis retortie retorte Retortoli Retorti Tazza

Claw beaker
Glass Dictionary Term

A beaker decorated with claw- or trunklike protrusions made by applying blobs of hot glass that melted the parts of the wall to which they were attached. The blobs were then blown outward and manipulated to resemble hollow claws. Claw beakers were made in Europe between the fifth and seventh

Slumping
Glass Dictionary Term

The process of reheating a blank until it becomes soft and gradually flows under its own weight over or into a former mold and eventually assumes the shape of the mold. Soda-lime glass becomes soft at about 1110°F (600°C). Slumping is also known as sagging. slump slumped slumps sagged Sagging Dish

Crizzling
Glass Dictionary Term

(or: crisseling)The result of chemical instability in glass caused by an imbalance in the ingredients of the batch, particularly an excess of alkali or a deficiency of stabilizer (usually lime). The instability of the glass results in an attack by atmospheric moisture, which produces a network of

Marbled glass
Glass Dictionary Term

Glass decorated with streaks of two or more colors, resembling marble. Marbled glass was a Venetian specialty from the 15th to 17th centuries, but it was also made in other times and places. Venetian marbled glass is known as calcedonio. slag glasses slag-glass slag-glasses Slag glass Calcedonio

Gadget
Glass Dictionary Term

A metal rod with a spring clip that grips the foot of a vessel and so avoids the use of a pontil. Gadgets were first used in the late 18th century. gadgets snaps Snap Clamp

Cone beaker
Glass Dictionary Term

A drinking vessel in the form of an inverted cone. Cone beakers were used in several cultures, including ancient Rome, Sasanian Iran, and early medieval Europe. Cone beakers sturzbechers sturzbecker sturzbeckers Sturzbecher Cone Beaker

Intaglio
Glass Dictionary Term

(from Italian, “engraving”) A method of wheel engraving whereby the ornamentation is cut into the object and lies below the surface plane. The German name for this technique is Tiefschnitt. tiefschnitting tiefschnitted Tiefschnitt Goblet

Cage cup
Glass Dictionary Term

An ancient Roman vessel decorated by undercutting so that the surface decoration stands free of the body of the glass, supported by struts. The vessel appears, therefore, to be enclosed in an openwork cage. Cage cups are sometimes known as diatreta or vasa diatreta. cage cups vas diatretums vas

Forest glass
Glass Dictionary Term

Glass made in the rural glasshouses of central and northern Europe in the late Middle Ages and the early modern period. Most forest glass was fluxed with potash derived from the wood with which the furnaces were fueled. It is green because of iron impurities in the sand from which it was made. The

Swirled ribbing
Glass Dictionary Term

A pattern of spiraling vertical ribs made by inflating the parison in a dip mold with vertical ribs, withdrawing it, and twisting it before continuing to inflate. The pattern is also described as wrythen. swirl ribbing swirl ribbed wrythens writhen writhens Wrythen Ale Glass

GlassLab at Governors Island: James Victore
Video

Designer James Victore describes working with GlassLab during design sessions on Governors Island in NYC, June 30 and July 7, 2012. The Corning Museum of Gla...

GlassLab at Governors Island: Mike Perry
Video

Designer Mike Perry describes working with GlassLab during design sessions on Governors Island in NYC, June 30 and July 8, 2012. The Corning Museum of Glass...

Meet the Artist: Michael Glancy
Article

In 2013, the Museum received a group of five works in glass and metal by the American artist Michael Glancy as a gift from Daniel Greenberg and Susan Steinhauser, Museum patrons and friends of the artist. One of Glancy’s 1998 sculptures, Crystal Obscura [2012.4.168], is made with colorless

Moorish Bathers
Video

Listen as curator David Whitehouse describes the Moorish Bathers, George Woodall's masterpiece. It was started about 1890 and completed in 1898. George and Thomas Woodall left school at about the age of 12 and became apprentices at the firm of J. & J. Northwood. They also attended evening

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