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Tread plate, also known as checker plate and diamond plate, is a type of metal stock with a regular pattern or lines on one side as a decoration. These products are often mistakenly used as slip resistant products. In most conditions they offer little to no slip resistance.
Apple_Metal_logo,_version_2.png (128 × 128 pixels, file size: 3 KB, MIME type: image/png) This is a file from the Wikimedia Commons . Information from its description page there is shown below.
The Indian-head test pattern is a test card that gained widespread adoption during the black-and-white television broadcasting era as an aid in the calibration of television equipment. It features a drawing of a Native American wearing a headdress surrounded by numerous graphic elements designed to test different aspects of broadcast display.
The Reims windows still used the same 'two lancets plus oculus' pattern (as in the Soissons example above), but now the glass panels were held between narrow stone mullions made up of carefully shaped lengths of masonry (fitted together with mortar and metal pins) quite distinct from the wall surrounding them.
The blade shows a chevron pattern with opposing twists and straight laminate alternating. Pattern welding is a practice in sword and knife making by forming a blade of several metal pieces of differing composition that are forge-welded together and twisted and manipulated to form a pattern. [1]
Mokume-gane (木目金) is a Japanese metalworking procedure which produces a mixed-metal laminate with distinctive layered patterns; the term is also used to refer to the resulting laminate itself. The term mokume-gane translates closely to 'wood grain metal' or 'wood eye metal' and describes the way metal takes on the appearance of natural ...
The complete interference pattern takes the appearance of a set of concentric rings. The sharpness of the rings depends on the reflectivity of the flats. If the reflectivity is high, resulting in a high Q factor , monochromatic light produces a set of narrow bright rings against a dark background.