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In display technology parlance, viewing angle is the angle at which a display can be viewed with an acceptable visual performance. In a technical context, the angular range is called viewing cone defined by a multitude of viewing directions.
This type of articulating screen is called cross-tilt screen, flexible-tilt screen or flex-tilt screen. Articulating screens are used in a variety of electronic devices such as laptops, camcorders, digital cameras, desk phones, mobile phones, DVD players and others; also TV screens and computer monitors can be articulating screens.
In a CRT, the vertical scan rate is the number of times per second that the electron beam returns to the upper left corner of the screen to begin drawing a new frame. [3] It is controlled by the vertical blanking signal generated by the video controller , and is partially limited by the monitor's maximum horizontal scan rate .
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 ...
In filmmaking, the 180-degree rule [1] is a guideline regarding the on-screen spatial relationship between a character and another character or object within a scene. The rule states that the camera should be kept on one side of an imaginary axis between two characters, so that the first character is always frame right of the second character.
One of the keys to maintaining screen direction is the 180-degree rule, which cuts a horizontal line through the frame. [3] Actors are then filmed from only one side of the axis, maintaining the orientation of the space for the viewer. [4] This can be manipulated specifically to create a shift in perspective.
The sum of all the internal angles of a simple polygon is π(n−2) radians or 180(n–2) degrees, where n is the number of sides. The formula can be proved by using mathematical induction: starting with a triangle, for which the angle sum is 180°, then replacing one side with two sides connected at another vertex, and so on.
The Page Up and Page Down keys (sometimes abbreviated as PgUp and PgDn) are two keys commonly found on computer keyboards. The two keys are primarily used to scroll up or down in documents, but the scrolling distance varies between different applications. In word processors, for instance, they may jump by an emulated physical page or by a ...