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Various window blind styles. A window blind is a type of window covering. [1] There are many different kinds of window blinds which use a variety of control systems. A typical window blind is made up of several long horizontal or vertical slats of various types of hard material, including wood, plastic or metal which are held together by cords that run through the blind slats.
The process of manufacturing blackout was invented by Baltimore-based Rockland Industries, [2] and involves coating a fabric with layers of foam, or 'passes'. A '2-pass' blackout is produced by applying two passes of foam to a fabric – first, a black layer is applied to the fabric, then a white or light-colored layer is applied on top of the black.
Darkening occurs from the edges, moving inward, and is a slow process, ranging from many seconds to 20–30 minutes depending on window size. Newer electrochromic technologies eliminate the yellow cast in the clear state and tinting to more neutral shades of gray, tinting evenly rather than from the outside in, and accelerate the tinting speeds ...
A blackout curtain used in Auckland, New Zealand during World War II. Lights can simply be turned off or light can sometimes be minimized by tarring the windows of large public structures. In World War II, a dark blackout curtain was used to keep the light inside. Tarring the windows can mean a semi-permanent blackout status.
The slats of a mini blind. A mini blind is a type of horizontal window blind made of long, narrow slats held together by string. Its slats are less than half the width of a regular venetian blind, and are often made of aluminium, measuring 15 millimetres (0.59 in) or 25 millimetres (0.98 in).
Flu and Covid cases rising and a wedding for 'Barbie' creators: Morning Rundown
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