Glass

__Glass__

__Glass-Oral presentation notes__ - Glass is an amorphous (non-crystalline) solid material. -Hard material and optically transparent. -Composed mainly of sand and alkali. -100% recyclable and one of the safest packaging materials due to its composition and properties (It does not deteriorate, corrode, stain or fade). -It is used for: Architecture application Illumination Electrical transmission Instruments for scientific research <span style="color: #404040; font-family: 'Comic Sans MS',cursive; font-size: 15px;">Optical instruments <span style="color: #404040; font-family: 'Comic Sans MS',cursive; font-size: 15px;">Domestic tools <span style="color: #404040; font-family: 'Comic Sans MS',cursive; font-size: 15px;">Even textiles <span style="color: #000000; font-family: 'Comic Sans MS',cursive; font-size: 15px;">-Types: <span style="font-family: 'Comic Sans MS',cursive; font-size: 15px; line-height: 22px;">Commercial glass or Soda-lime glass (most common, good light transmision, smooth nonporous surface, resistant to chemical attacks, not resistant to high temperatures, used in bottels, widows and glasses) <span style="font-family: 'Comic Sans MS',cursive; font-size: 15px; line-height: 22px;">Lead glass (moderate amounts-increases durability, high amounts-lowers melting point and soft surface, brilliance glass, not resistant to high temperatures) <span style="font-family: 'Comic Sans MS',cursive; font-size: 15px; line-height: 22px;">Borosilicate glass ( <span style="color: #404040; font-family: 'Comic Sans MS',cursive; font-size: 15px;">resistance to thermal changes and chemical corrosion, used for laboratories, industrial chemical process plants, pharmaceutical industries, high powered lambs, domestic kitchens) <span style="font-family: 'Comic Sans MS',cursive; font-size: 15px;"> Aluminosicate glass (used as resistors for electronic circuitry,chemical durability,high operating temperatures, difficult to fabricate) <span style="font-family: 'Comic Sans MS',cursive; font-size: 15px;"> Ninety-six percent silica glass ( Is borosilicate glass melted to remove all non-silicate elements,used in furnaceglass and for out windows on space vehicles) <span style="font-family: 'Comic Sans MS',cursive; font-size: 15px;"> Fused silica glass (v ery difficult to fabricate, most expensive of all glasses, used in crucibles for growing crystals)

<span style="font-family: 'Comic Sans MS',cursive; font-size: 15px;">__<span style="font-family: 'Comic Sans MS',cursive; font-size: 15px;">What are your conclusions about the use of glass in architecture?__ <span style="font-family: 'Comic Sans MS',cursive; font-size: 15px;">In the past glass was thought to be quite a fragile building material, it was mainly used for windows to allow some air and light in to rooms. Today glass is used in the construction of several elements of exterior and interior architecture, m odern glass, is not only great to look through but it is safer, stronger and energy efficient.

<span style="font-family: 'Comic Sans MS',cursive; font-size: 15px;">Glass facilitates natural light and opens up rooms allowing smaller spaces to look bigger. It <span style="font-family: 'Comic Sans MS',cursive; font-size: 15px; line-height: 22px;"> is also relatively inexpensive and fully recyclable. <span style="font-family: 'Comic Sans MS',cursive; font-size: 15px; line-height: 22px;">Modern architecture has elevated the way we think about the use of glass in our own homes. It is no longer simply a material for windows and the occasional sliding door; it is a design component as stone, concrete and wood.