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Aesthetic distance refers to the gap between a viewer's conscious reality and the fictional reality presented in a work of art. When a reader becomes fully engrossed (also known as being 'immersed') in the illusory narrative world of a book, the author has achieved a close aesthetic distance.
For an observer standing on the ground with h = 1.70 metres (5 ft 7 in), the horizon is at a distance of 4.7 kilometres (2.9 mi). For an observer standing on the ground with h = 2 metres (6 ft 7 in), the horizon is at a distance of 5 kilometres (3.1 mi).
Emil Emmert (1844–1911) first described the law in 1881. [1] He noted that an afterimage appeared to increase in size when projected to a greater distance. Some authors thus take Emmert's law to refer strictly to the increase in the apparent size of an after-image when the distance between observer and projection plane is increased, as it did in its original form. [2]
A figure explaining point-projection prospective. S is the distance between an observer's eye and an observation point on an object that is a long rectangular wall facing to the observer at a tilted angle. If the observation distance becomes N times longer, then the apparent height of the wall at the observation point is roughly N times smaller.
The subject may be any definable object taken note of or to be taken note of by the observer, at any distance more than least distance of distinct vision. In optics, refraction of a ray due to use of lenses can cause distortion. [2] Shadows, patterns and movement can also influence line of sight interpretation [3] [4] (as in optical illusions).
Diagram showing the relationship between the zenith, the nadir, and different types of horizon. The zenith (UK: / ˈ z ɛ n ɪ θ /, US: / ˈ z iː n ɪ θ /) [1] is the imaginary point on the celestial sphere directly "above" a particular location. "Above" means in the vertical direction opposite to the gravity direction at that location . The ...
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The observer never touches the horizon and never passes a location where it appeared to be. In the case of a horizon perceived by an occupant of a de Sitter universe, the horizon always appears to be a fixed distance away for a non-accelerating observer. It is never contacted, even by an accelerating observer.