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  2. Window blind - Wikipedia

    en.wikipedia.org/wiki/Window_blind

    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.

  3. Euplexia benesimilis - Wikipedia

    en.wikipedia.org/wiki/Euplexia_benesimilis

    Euplexia benesimilis, the American angle shades, is a species of cutworm or dart moth in the family Noctuidae. It is found in North America. [1] [2] [3]

  4. Mini blind - Wikipedia

    en.wikipedia.org/wiki/Mini_blind

    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).

  5. Angle shades - Wikipedia

    en.wikipedia.org/wiki/Angle_shades

    The angle shades (Phlogophora meticulosa) is a moth of the family Noctuidae. The species was first described by Carl Linnaeus in his 1758 10th edition of Systema Naturae . It is distributed throughout Europe as far east as the Urals and also in the Azores , in Algeria , and in Asia Minor , Armenia , and Syria .

  6. Angular diameter - Wikipedia

    en.wikipedia.org/wiki/Angular_diameter

    Angular diameter: the angle subtended by an object. The angular diameter, angular size, apparent diameter, or apparent size is an angular separation (in units of angle) describing how large a sphere or circle appears from a given point of view. In the vision sciences, it is called the visual angle, and in optics, it is the angular aperture (of ...

  7. Visual angle - Wikipedia

    en.wikipedia.org/wiki/Visual_angle

    Visual angle is the angle a viewed object subtends at the eye, usually stated in degrees of arc. It also is called the object's angular size . The diagram on the right shows an observer's eye looking at a frontal extent (the vertical arrow) that has a linear size S {\displaystyle S} , located in the distance D {\displaystyle D} from point O ...

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