Glass beads were being made in Murano by the end of the 14th century.

Glass beads have been in use for almost five centuries in the Americas.

* Glass beads in Egypt

Glass chandelier featuring many delicate arms, spires and strings of beads.

Glass rods made with concentric layers of color or stripes of color can be used to make patterns of color in seed beads.

Glass is also available in particles of various sizes ( frit or powder ), which is typically used for surface decorations in lampworked beads.

Beadmaking with Borosilicate Glass: In recent years, with the resurgence of lampworking as a technique to make handmade glass beads, boro has become a popular material in many glass artists ' studios.

Glass slurry decorations were applied to moulded 19th century beads possibly of Czech origin.

Glass beads have been dated back to at least Roman times.

Fiberglas materials are available from Glass Plastic Supply Co., 1605 W. Elizabeth Ave., Linden, N. J..

Glasses are classified using the Schott Glass letter-number code to reflect their composition and position on the diagram.

In the United States in 1995, the Glass Ceiling Commission, a government-funded group, stated: " Over half of all Master ’ s degrees are now awarded to women, yet 95 % of senior-level managers, of the top Fortune 1000 industrial and 500 service companies are men.

Further glass forming techniques are summarized in the table Glass forming techniques.

Glass is in widespread use largely due to the production of glass compositions that are transparent to visible wavelengths of light.

The Blaschka Glass Flowers are still an inspiration to glassblowers today.

Glass and metals are examples of isotropic materials.

Glass has a higher dielectric strength, but it attracts condensation and the thick irregular shapes needed for insulators are difficult to cast without internal strains.

Vertical ridges etched on the surface are smooth .</ li > < li > Twisted nematic liquid crystal .</ li > < li > Glass substrate with common electrode film ( ITO ) with horizontal ridges to line up with the horizontal filter .</ li > < li > Polarizing filter film with a horizontal axis to block / pass light .</ li > < li > Reflective surface to send light back to viewer.

Glass mirrors are most often coated with non-toxic silver or aluminium, implemented by a series of coatings:

Glass block or glass brick are blocks made from glass and provide a translucent to clear vision through the block.

This theory, conceived by a British Glass manufacturer, proposes that the first two figures are Gauis Octavius, father of the future emperor, and Attia Julia Balboa, his mother ( hence the cherub with the arrow ) who had a dream of being impregnated by Apollo in the form of a sea serpent ( ketos ), note the snake's prominent teeth.

Glass Moonshine slides are made of glass, but have a porous ceramic interior that helps prevent slipping ; other slides have been designed to reduce the weight of brass or porcelain slides by using a lightweight interior, while still others are made of glass on the front and of metal on the back to allow easy switching.

Note that in England and Wales, the circumstances where Promissory estoppel may be used to overcome the statute are limited-see Actionstrenght Ltd v. International Glass Engineering UKHL 17-and some jurisdictions deny this possibility altogether.

A sequel, System Shock 2, was released by Looking Glass Studios and off-shoot developer Irrational Games in 1999 ; the 2000 game Deus Ex and the 2007 game BioShock are spiritual successors to the two games.

Glass partition walls are a series of individual toughened glass panels, which are suspended from or slide along a robust aluminium ceiling track.

Glass candle holders are sometimes cracked by thermal shock from the candle flame, particularly when the candle burns down to the end.

Glass sponges are relatively uncommon and are mostly found at depths from although the species Oopsacas minuta has been found in shallow water, while others have been found much deeper.

Glass sponges are different from other sponges in a variety of other ways.

There are five main types of Time Controls: ( 1 ) Fischer ( invented by Bobby Fischer ), ( 2 ) Bronstein ( invented by David Bronstein ), ( 3 ) Simple Delay, ( 4 ) Game Word and ( 5 ) Hour Glass.

Image: Glass bottom boats & Semi sub. JPG | Glass bottom boats and a Semi submarine which are used for coral viewing at Green Island ( Queensland ), Great Barrier Reef, Australia

Glass containing holmium oxide and holmium oxide solutions ( usually in perchloric acid ) have sharp optical absorption peaks in the spectral range 200 – 900 nm.

( Philip Glass also makes use of atonality, though his style is generally described as minimalist, usually thought of as another 20th century development.

:" Glass catfish " in the aquarium trade refers usually to the Ghost Catfish, K. minor ( see below ).

Glass vacuum flasks are usually contained in or coated with plastic or other materials in order to protect from physical damage and to contain the fragments should it break.

Glass, concrete, and terrazzo sinks are usually designed for their aesthetic appeal and can be obtained in a wide variety of unusual shapes and colors such as floral shapes.

Glass eyes are then usually added to the display, and in some cases, artificial teeth, jaws, tongue, or for some birds, artificial beaks and legs can be used.

Glass fibers have a tensile strength stronger than steel, but bulk glass usually does not.

With the story themes deriving from objects in the collection ( usually with the names of the people involved changed but the facts remaining true to history ), the 52 episodes had such titles as " The Tartan Scarf " and " A Piece of Iron Chain " or " Frosted Glass Shards " and " A Khaki Handkerchief ".

Glass bottom boats are used almost exclusively for giving tours, as they are usually designed to allow the maximum number of tourists to view out the glass bottom and are not really suitable for other uses.

GLARE is a " Glass Laminate Aluminium Reinforced Epoxy " FML, composed of several very thin layers of metal ( usually aluminium ) interspersed with layers of glass-fibre " pre-preg ", bonded together with a matrix such as epoxy.

The show opened with " Ahead in The Glass House ...", where an ( unseen ) upcoming segment is announced followed by a few seconds of out-of-context news footage, usually taken from an interview of an Australian political figure.

Glass knives are usually manufactured by the fracture of glass bars using special " knife-maker " fracturing devices.

Glass knives usually have small troughs, made with plastic tape, which are filled with water to allow the sample to float for later collection.

Glass microspheres are usually between 1 to 1000 micrometers in diameter, although the sizes can range from 100 nanometers to 5 millimeters in diameter.

The razor is then pulled out of the skin and the jewelry ( usually a non-flared or single-flared Pyrex Glass plug ) of the same size is inserted into the hole created by the razor.