Windows at first were mere holes in the wall that were eventually covered with animal hide, cloth, or wood. Shutters were shortly introduced giving an opening and closing function for its users and more functionality within their environment. Mullioned glass windows were introduced to the public made of flattened pieces of translucent animal horn and fine sliced marble. Mullion windows have a vertical divider between the windows that has a structural yet decorative purpose.
Glass windows were introduced by the Romans in Alexandria circa 100CE. Glass windows with mediocre optical properties were seen more and more in Roman homes. The well off Europeans had mullioned windows in their homes while paper windows were widely used in China, Korea, and Japan’s less wealthy communities. Actual glass windows became commonly used in England in the early 17th century however in the 14th century flattened animal horn window panes were still in use.
Modern style windows were put into play when the glass making process was just right. Glass blowing wasdiscovered during the first century BCE on the Syro-Palestinian coast. This revolutionized the glass industry and led glass windows to what they are today.
Before the realization of glass blowing, the first glassmaking manual dates back to 650 BCE in cuneiform tablets which were discovered in King Ashurbanipal’s library. Glass making seized until they were reintroduced by Ptolemaic Alexandria; vessels and beads were widely produced but also new experimental and technological techniques were introduced. In the Hellenistic period glass making was used to produce glass tables and other larger pieces. A technique called “slumping” viscous was brought about which gave the glass a mosaic-like effect. During this time owning colorless or de-colored glass was a commodity and glass makers were determined in achieving this effect.
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