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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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

GlassLab at Governors Island: Leon Ransmeier
Video

Designer Leon Ransmeier describes working with GlassLab during design sessions on Governors Island in NYC, July 7- 8 and July 14, 2012. The Corning Museum o...

Overlay
Glass Dictionary Term

A layer of glass that covers a layer of a different color, often as the result of casing or flashing. overlays over-lay over-lays overlaying over-laying Red/Amber Sliced Descending Form

Almorraja
Glass Dictionary Term

(Spanish), almorratxa (Catalan) A rose water sprinkler with many spouts, made in northern Spain between the 16th and 18th centuries. Almorratxa

Glass of the Romans
Article

Until about 50 B.C. glass objects could only be made slowly due to the limited techniques available. One bottle could take several days to make via casting or cutting techniques. Core-formed objects may have taken 45 minutes to create. Glass furnace technology was such that only small amounts of

GlassLab at Governors Island: Helen Lee
Video

Designer Helen Lee describes working with GlassLab during a design session on Governors Island in NYC, July 7- 8, 2012. The Corning Museum of Glass partnere...

Gemmail
Glass Dictionary Term

(French, “enamel gem”) Term coined by the painter Jean Crotti (French, 1870─1958) to describe a technique for layering and adhering pieces of colored glass onto a panel in order to create compositions that are meant to be viewed in front of a light box or illuminated from behind. Plural is gemmaux.

GlassLab at Governors Island: Inna Alesina
Video

Designer Inna Alesina describes working with GlassLab during a design session on Governors Island in NYC, July 21- 22, 2012. The Corning Museum of Glass par...

Diatretum
Glass Dictionary Term

vas diatretum (Latin, “openwork vessel”) A term frequently used to refer to a cage cup. The plural form is vasa diatreta. Cage Cup

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