PARALLAX Meaning and
Definition
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Parallax refers to the apparent displacement or difference in the position of an object when viewed from different perspectives. It is a phenomenon that occurs due to the change in the position of the observer and the angle of viewing. Parallax is commonly observed in everyday life, particularly when looking at objects from different angles or distances.
In a more technical sense, parallax is often used in the field of astronomy to measure distances between celestial objects. By observing the apparent shift in the position of a star against the background of more distant stars as the Earth orbits the Sun, astronomers can determine the star's relative distance.
In the context of technology, parallax is frequently used in the design of optical instruments and devices such as cameras, binoculars, and telescopes. These instruments are often equipped with a parallax compensation feature to ensure accurate alignment of the lens with the viewfinder or observation point.
Furthermore, parallax is also utilized in the field of web design and programming. It refers to the phenomenon where elements on a website move at different speeds when the user scrolls, creating an illusion of depth and enhancing the overall user experience.
Overall, parallax is a concept that explains the apparent shift or difference in position of an object when viewed from different perspectives, with applications in various fields such as astronomy, technology, and web design.
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1. The apparent movement of objects due to movement of the observer. 2. The apparent movement of an object when one eye is closed.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
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In celestial bodies, the apparent angular shifting of a heavenly object arising from a change in our point of view; the difference between the apparent place of a heavenly object, as seen by an observer from any station, and its true position as supposed to be seen from the centre of the earth or the centre of the sun.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.
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Etymology of PARALLAX
The word "parallax" is derived from the Greek word "parallaxis", which means "change" or "alternation". It is composed of two parts: "para", meaning "alongside" or "to the side", and "allaxi", derived from "allasso", meaning "to change". The term was initially used in astronomy to describe the apparent displacement or change in the position of an object when viewed from different angles or perspectives. Over time, its metaphorical use has expanded to various fields, including photography, geometry, and computer graphics.
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