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Matchbook cover, World War II, Uncle Sam. A "matchcover", or "matchbook cover", is a thin cardboard covering that folds over match sticks in a "book" or "pack" of matches. Covers have been used as a form of advertising since 1894, two years after they were patented, and since then, have attracted people who enjoy the hobby of collecting.
Flat-panel displays are thin panels of glass or plastic used for electronically displaying text, images, or video. Liquid crystal displays (LCD), OLED (organic light emitting diode) and microLED displays are not quite the same; since LCD uses a liquid crystal that reacts to an electric current blocking light or allowing it to pass through the panel, whereas OLED/microLED displays consist of ...
Screen-door effect. The screen-door effect ( SDE) is a visual artifact of displays, where the fine lines separating pixels (or subpixels) become visible in the displayed image. This can be seen in digital projector images and regular displays under magnification or at close range, but the increases in display resolutions have made this much ...
Window screen. A window screen (also known as insect screen, bug screen, fly screen, flywire, wire mesh, or window net) is designed to cover the opening of a window. It is usually a mesh made of metal, fibreglass, plastic wire, or other pieces of plastic and stretched in a frame of wood or metal. It serves to keep leaves, debris, bugs, birds ...
Plastic screen protectors cost less than glass and are thinner (around 0.1 mm (0.004 in) thick, compared to 0.3 to 0.5 mm (0.012 to 0.020 in) for glass) [2] and more flexible. At the same price, glass will resist scratches better than plastic, and feel more like the device's screen, though higher priced plastic protectors may be better than the cheapest tempered glass models, since glass will ...
Platform screen doors on the Elizabeth line at Farringdon in 2019 "Horizontal lift" style doors at Lomonosovskaya station on the Saint Petersburg Metro, the first type of screen doors in the world The idea for platform edge doors dates from as early as 1908, when Charles S. Shute of Boston was granted a patent for "Safety fence and gate for railway-platforms". [ 2 ]
A matchbox is a container or case made of cardboard, thin wood or metal on some models, and designed to be filled with matches. In short, is a box that contains safety matches made of wooden sticks or cardboard stripes. It commonly has a coarse striking surface on one edge for lighting the matches contained inside.
A glass cockpit is an aircraft cockpit that features an array of electronic (digital) flight instrument displays, typically large LCD screens, rather than traditional analog dials and gauges. [ 1] While a traditional cockpit relies on numerous mechanical gauges (nicknamed "steam gauges") to display information, a glass cockpit uses several ...