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Sightline criteria in theaters can include: the "isacoustic curve" [3] [4] [5] defined by John Scott Russell in 1838 and applied at the Auditorium Building in Chicago and the Emery Theatre in Cincinnati; alternate row sightlines where each patron sees between the heads of patrons in the row in front and over the heads of patrons in the second ...
Sightline (architecture) Line-of-sight range; Line-of-sight (missile), the straight line between the missile and the target Radar horizon; Line-of-sight propagation, electro-magnetic waves travelling in a straight line
A viewshed can be represented by raster data indicating the visibility of a viewpoint for or from an area of interest. In a binary representation, a cell (shown graphically as a pixel) with a value of 1 (or "true") indicates that the viewpoint is visible from that cell, while a value of 0 (false) indicates that the viewpoint is not visible.
By definition, line of sight is the visual line of sight, that is determined by the ability of the average human eye to resolve a distant object. Our eyes are sensitive to light but optical wavelengths are very short compared to radio wavelengths.
Pennsylvania windshield obstructions are covered under Title 75, §4524 : "Obstruction on front windshield.--No person shall drive any motor vehicle with any sign, poster or other nontransparent material upon the front windshield which materially obstructs, obscures or impairs the driver's clear view of the highway or any intersecting highway except an inspection certificate, sticker ...
Most common are posts of varying widths and heights or rings of varying diameter—these can be chosen by the shooter for the best fit to the target being used. Tinted transparent plastic insert elements may also be used, with a hole in the middle; these work the same way as an opaque ring, but provide a less obstructed view of the target. High ...
Water appearing to run uphill at Magnetic Hill in New Brunswick Magnetic Hill in Moncton, Canada. A gravity hill, also known as a magnetic hill, mystery hill, mystery spot, gravity road, or anti-gravity hill, is a place where the layout of the surrounding land produces an illusion, making a slight downhill slope appear to be an uphill slope.
Blind spots exist in a wide range of vehicles: aircraft, cars, buses, trucks, agricultural equipment, heavy equipment, boats, ships, trams and trains. Blind spots may occur in the front of the driver when the A-pillar (also called the windshield pillar), side-view mirror, or interior rear-view mirror block a driver's