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  2. 120 film - Wikipedia

    en.wikipedia.org/wiki/120_film

    The 120 film format is a roll film which is nominally between 60.7 mm and 61.7 mm wide. Most modern films made today are roughly 61 mm (2.4 inches) wide. The film is held in an open spool originally made of wood with metal flanges, later with all-metal, and finally with all-plastic. The length of the film is nominally between 820 millimetres ...

  3. Picture frame - Wikipedia

    en.wikipedia.org/wiki/Picture_frame

    A picture frame is a container that borders the perimeter of a picture, and is used for the protection, display, and visual appreciation of objects and imagery such as photographs, canvas paintings, drawings and prints, posters, mirrors, shadow box memorabilia, and textiles. Traditionally picture frames have been made of wood, and it remains ...

  4. Punched card - Wikipedia

    en.wikipedia.org/wiki/Punched_card

    A 12-row/80-column IBM punched card from the mid-twentieth century. A punched card (also punch card[1] or punched-card[2]) is a piece of card stock that stores digital data using punched holes. Punched cards were once common in data processing and the control of automated machines. Punched cards were widely used in the 20th century, where unit ...

  5. Aspect ratio (image) - Wikipedia

    en.wikipedia.org/wiki/Aspect_ratio_(image)

    A good example of this a 4×6 print (6 inch wide by 4 inch tall landscape) perfectly matches the 3:2 aspect ratio of a DSLR/35 mm, since 6/2=3 and 4/2=2. For analog projection of photographic slides, projector and screen use a 1:1 aspect ratio, supporting horizontal and vertical orientation equally well.

  6. Slide rule - Wikipedia

    en.wikipedia.org/wiki/Slide_rule

    Slide rule. Typical ten-inch (25 cm) student slide rule (Pickett N902-T simplex trig) A slide rule is a hand -operated mechanical calculator consisting of slidable rulers for evaluating mathematical operations such as multiplication, division, exponents, roots, logarithms, and trigonometry.

  7. Lenticular printing - Wikipedia

    en.wikipedia.org/wiki/Lenticular_printing

    Lenticular printing is a technology in which lenticular lenses (a technology also used for 3D displays) are used to produce printed images with an illusion of depth, or the ability to change or move as they are viewed from different angles. Examples include flip and animation effects such as winking eyes, and modern advertising graphics whose ...

  8. Table (furniture) - Wikipedia

    en.wikipedia.org/wiki/Table_(furniture)

    Several geometries of folding table that can be collapsed into a smaller volume (e.g., a TV tray, which is a portable, folding table on a stand) Heights ranging up and down from the most common 18–30 inches (46–76 cm) range, often reflecting the height of chairs or bar stools used as seating for people making use of a table, as for eating ...

  9. Boeing X-40 - Wikipedia

    en.wikipedia.org/wiki/Boeing_X-40

    1. History. First flight. August 11, 1998. (dropped by UH-60 Black Hawk) [1][2][3] The Boeing X-40 Space Maneuver Vehicle is a test platform for the Boeing X-37 reusable spaceplane, built by Boeing Phantom Works. It sought to test the X-37's systems in order to "reduce the cost and risk of future reusable space launch vehicle system."

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