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A typical installation of insulated glass windows with uPVC frames. Possibly the earliest use of double glazing was in Siberia, where it was observed by Henry Seebohm in 1877 as an established necessity in the Yeniseysk area where the bitterly cold winter temperatures regularly fall below -50 °C, indicating how the concept may have started: [2]
Glazing, which derives from the Middle English for 'glass', is a part of a wall or window, made of glass. [ 1 ] [ 2 ] Glazing also describes the work done by a professional " glazier ". Glazing is also less commonly used to describe the insertion of ophthalmic lenses into an eyeglass frame.
A window is an opening in a wall, door, roof, or vehicle that allows the exchange of light and may also allow the passage of sound and sometimes air.Modern windows are usually glazed or covered in some other transparent or translucent material, a sash set in a frame [1] in the opening; the sash and frame are also referred to as a window. [2]
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Quarter glass is also sometimes called a valence window. [2] This window may be set on hinges and is then also known as a vent window, wing window, wing vent window, or a fly window. Most often found on older vehicles on the front doors, it is a small roughly triangular glass in front of and separate from the main window that rotates inward ...
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Modern double-glazed sash windows are available. These may have true muntins or "glazing bars", or may imitate them by applying them to the surface of the glazing, giving the appearance of multiple small panes , whereas each sash consists of only one large double-glazed unit.
An ornate brass door hinge A barrel hinge. A hinge is a mechanical bearing that connects two solid objects, typically allowing only a limited angle of rotation between them. Two objects connected by an ideal hinge rotate relative to each other about a fixed axis of rotation, with all other translations or rotations prevented; thus a hinge has one degree of freedom.