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A flatness test of a float-glass optical window. By placing a ruler across the image, adjacent to a fringe, and counting how many fringes cross it, the flatness of the surface can be measured along any line. The window has a flatness of 4–6λ (~2100–3100 nm) per inch. An optical flat test in both green and red.
For purposes of discussion we shall assume the two primary patterns are each printed in greyscale ink on a white sheet, where the opacity (e.g., shade of grey) of the "printed" part is given by a value between 0 (white) and 1 (black) inclusive, with 1 / 2 representing neutral grey. Any value less than 0 or greater than 1 using this grey ...
Fringe is an American science fiction drama television series originally broadcast from 2008 to 2013. The show, created by J. J. Abrams, Alex Kurtzman, and Roberto Orci, revolves around the fictional Fringe Division, a congressionally funded federal law enforcement task force, staffed primarily by Federal Bureau of Investigation and Homeland Security personnel.
Window valances are also called window top treatments.The earliest recorded history of interior design is rooted in the renaissance Era, a time of great change and rebirth in the world of art and architecture, and much of this time saw understated, simple treatments, eventually moving towards more elaborate fabrics of multiple layers of treatments, including, towards the end of this period ...
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.
Optimal control of window coverings can increase occupant comfort (visual and thermal comfort) while saving building energy use (lighting, cooling, and heating energy). [7] Typical dynamic window coverings include automated blinds and automatic shades. Window blinds and shades can be controlled to avoid glare while introducing daylight to the ...
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