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Colorado Street Bridge, an example of a false skew arch. The strength of a regular arch (also known as a "square" or "right" arch) comes from the fact that the mass of the structure and its superincumbent load cause lines of force that are carried by the stones into the ground and the abutments without producing any tendency for the stones to slide with respect to one another.
Simulation showing how adjusting the angle of view of a camera, while varying the camera's distance and keeping the object in frame, results in vastly differing images. At narrow angles and long distances, light rays are nearly parallel, resulting in a "flattened" image. At wide angles and short distances, objects appear foreshortened or distorted.
The number of pixels or picture elements contained in one linear inch in a digitally stored image. PS, PSE: Photoshop, Photoshop Elements. Commercial computer applications developed by Adobe for editing digital images. [20] RGB: RGB color space. An additive colour space that uses the primary colours of red, green and blue to create any colour.
Southdown Road Skew Bridge looking along the barrel. Note the substantial retaining wall to the left of the arch. The easiest way to visualise Boucher's concept for the ribbed skew arch is to consider a regular arch bridge that carries the railway at right angles across the road and then to slice it vertically at regular intervals along the axis of its barrel, the planes all being parallel ...
The Skew Arch Bridge in Reading, Pennsylvania, also known as the Askew Bridge and nicknamed the Soap and Whiskey Bridge, is an historic skew arch bridge that was completed in 1857. Its design enabled it to carry two tracks of the Philadelphia and Reading Railroad (P&R) at an angle over Sixth Street in Reading, Berks County, Pennsylvania. [3]
The word is derived from the Latin words quadri, a variant of four, and latus, meaning "side". It is also called a tetragon, derived from Greek "tetra" meaning "four" and "gon" meaning "corner" or "angle", in analogy to other polygons (e.g. pentagon). Since "gon" means "angle", it is analogously called a quadrangle, or 4-angle.
The keystone effect is the apparent distortion of an image caused by projecting it onto an angled surface. It is the distortion of the image dimensions, such as making a square look like a trapezoid, the shape of an architectural keystone, hence the name of the feature.
Hereford Road Skew Bridge is a disused railway bridge in Ledbury, Herefordshire. Built in 1881 to carry the Ledbury and Gloucester Railway across the Hereford Road at an angle of approximately 45°, it was built as a ribbed skew arch with stone spandrels and wing walls , and ribs of blue brick .