Search results
Results From The WOW.Com Content Network
A very important advance in glass manufacture was the technique of adding lead oxide to the molten glass; this improved the appearance of the glass and made it easier to melt using sea-coal as a furnace fuel. This technique also increased the "working period" of the glass, making it easier to manipulate.
A stained glass window is a window composed of pieces of colored glass, transparent, translucent or opaque, frequently portraying persons or scenes. Typically the glass in these windows is separated by lead glazing bars. Stained glass windows were popular in Victorian houses and some Wrightian houses, and are especially common in churches. [24]
Fibreglass (also called glass fibre reinforced plastic, GRP) is a composite material made by reinforcing a plastic resin with glass fibres. It is made by melting glass and stretching the glass into fibres. These fibres are woven together into a cloth and left to set in a plastic resin.
In his corner office at Corning Inc.’s towering steel-and-glass headquarters in Corning, N.Y., CEO Wendell Weeks keeps a small, yellowed piece of paper in a dark wood frame behind his desk ...
Expanded polystyrene, used for building insulation, packaging, and cups, is invented by Dow Chemical. [1] 1957: The Italian firm Montecatini begins large-scale commercial production of isotactic polypropylene. 1960s: High-density polyethylene bottles are introduced; they will replace glass bottles in most applications. [11] 1965
The glass in old windows can be the very early 'plate' or 'broad' glass to 'crown' or 'cylinder'. [5] Old glass is recognised by its imperfections ('ream') which result in optical distortion. Traditional cylinder glass is still made, but other sorts of antique glass are no longer available. [citation needed]
Window glass was produced throughout the period on a small scale, in the form of crown glass and broad glass. [3] [11] This was predominantly made from green glass throughout the 16th century. [3] [6] While rare in the early 16th century, glass windows soon became a symbol of increasing wealth and status. Larger sheets were in demand for ...
Ninety percent of the world's flat glass is produced by the float glass process [citation needed] invented in the 1950s by Sir Alastair Pilkington of Pilkington Glass, in which molten glass is poured onto one end of a molten tin bath. The glass floats on the tin, and levels out as it spreads along the bath, giving a smooth face to both sides.