An old form of window glass formed by blowing and whirling a hollow sphere of glass into a flat, circular disk with a center lump left by the worker's rod.

A flat, soda-lime-silica glass fabricated by drawing the molten glass from a furnace (drawn glass), or by forming a cylinder, dividing it lengthwise, and flattening it (Cylinder glass)

A flat, soda-lime-silica glass formed by rolling molten glass into a plate (rolled glass) that is subsequently ground and polished after cooling.

A flat, soda-lime-silica glass that is extremely smooth and nearly distortion-free, manufactured by pouring molten glass onto a surface of molten tin and allowing it to cool slowly.

Glass that is cooled slowly to relieve internal stresses.

Is annealed glass that is partially tempered by the process of reheating and sudden cooling.

Has one or both sides acid-etched or sandblasted to obscure vision. Both process, however weaken the glass and makes it difficult to clean.

Glass having an irregular pattern formed in the rolling process to obscure vision or to diffuse light.

Flat glass or patterened glass having a square or diamond wire mesh embedded within it to prevent shattering in the event of breakage or excessive heat.

Annealed glass that is reheated to just below the softening point and then rapidly cooled to induce compressive stresses in the surfaces and edges of the glass and tensile stresses in the interior.

Is a specially ground and polished, opaque colored glass obtained by the addition of metallic oxides.

Two or more piles of flat glass bonded under heat and pressure to interlayers of polyvinyl butyral resin that retains the fragments if the glass is broken.

Laminated or insulating glass used for sound control.

Opaque finish use for concealing the structural elements in a curtainwall construction. It is produced by fusing a ceramic frit to the interior surface of tempered or heat-strengthened glass.

Glass having a chemical admixture to absorb the radiant heat and visible light that strike it; also called heat-absorbing glass and glare reducing glass.

Iron oxide gives the glass a pale blue-green tint.

Usually of white color which gives wide light diffusion and reduces glare.

Glass having a thin, translucent metallic coating bonded to the exterior or interior surface to reflect a portion of the light and radiant heat that strike it.

Also called a double glass and made up of tow or more sheets of glass separated by a hermetically sealed air space in-between to provide thermal insulation and restrict condensation.

Glass that transmit visible light while selectively reflecting the longer wavelengths of radiant heat, produced by depositing a low-emissivity coating either on the glass itself or over a transparent plastic film suspended in the sealed air space of insulating glass.

A translucent, hollow block of glass with clear, textured or patterned faces, made by fusing two halves together with a partial vacuum inside and used for glazing openings.

A solid, impact-resistant glass block unit, sometimes having an insert or coated to reduce solar heat transmission.

Glass made without lead or iron, originally in a circular sheet.

The fire-polished surfaces are not perfectly parallel, resulting in some distortion of vision.

It has two kinds, one with thickness up to 8mm (5/16") and the heavy plate glass from 16mm (5/16") to 32mm (1-1/4")

It is the successor to plate glass and accounts for the majority of its production.

Formerly used in windows, it is now used as optical glass of low refractive index.

What is the single strength glass of Sheet Glass?

What is the double strength of a sheet glass?

This is about twice the strength of annealed glass with the same thickness.

Semi-transparent glass with distinctive geometric or linear designs that was formed during the rolling process that diffuse light and obscure vision; also called figure glass.

Considered a safety glazing material.

When fractured, it breaks into relatively harmless particles.

It has three to five times the resistance of annealed glass to impact and thermal stresses but cannot be altered after fabrication.

It is used for facing material for vertical and horizontal surfaces of walls, partitions and narrow flat surfaces.

Also called safety glass.

What Type of Glass Block is Number 1?

What Type of Glass Block is Number 2?

What Type of Glass Block is Number 3?

What Type of Glass Block is Number 4?

What Type of Glass Block is Number 5?

What Type of Glass Block is Number 6?

What Type of Glass Block is Number 7?

What Type of Glass Block is Number 8?

What Type of Glass Block is Number 9?

What kind of glass is number 1?

What kind of glass is number 2?

What kind of glass is number 3?

What kind of Glass is often used in car window?