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A horseshoe curve is a means to lengthen an ascending or descending grade and thereby reduce the maximum gradient. Grade or gradient is defined as the rise divided by the run (length) or distance, so in principle such curves add to length for the same altitude gain, just as would a climbing spiral around one or more peaks, or a climbing traverse (cutting) wrapping around an end of a ridge.
Proponents of horseshoe theory argue that the far-left and the far-right are closer to each other than either is to the political center. In popular discourse, the horseshoe theory asserts that advocates of the far-left and the far-right, rather than being at opposite and opposing ends of a linear continuum of the political spectrum, closely resemble each other, analogous to the way that the ...
A topographic map of the area around the Horseshoe Curve. Horseshoe Curve is 5 miles (8 km) west of Altoona, Pennsylvania, in Logan Township, Blair County.It sits at railroad milepost 242 on the Pittsburgh Line, which is the Norfolk Southern Railway Pittsburgh Division main line between Pittsburgh and Harrisburg, Pennsylvania.
The horseshoe map was designed to reproduce the chaotic dynamics of a flow in the neighborhood of a given periodic orbit. The neighborhood is chosen to be a small disk perpendicular to the orbit . As the system evolves, points in this disk remain close to the given periodic orbit, tracing out orbits that eventually intersect the disk once again.
The black trace in this map forming a hairpin turn above the Lakes is the famous & historic Horseshoe Curve built by the Pennsylvania Railroad which crosses over four different streams sitting in the bottom end of water gaps in the view, and finishes its climb in a fifth, seen below in the next (zoomed out) map, just north of a sixth Blair Gap ...
To see it, first locate the Hercules constellation, then look to the west for the Northern Crown, a horseshoe-shaped curve of stars. “[The Northern Crown] ...
The next landmark on the railroad past Pigpen Siding was Horseshoe Curve, a sharp curve in the shape of a horseshoe near the adjacent treeline, which was fashioned after the Pennsylvania Railroad's Horseshoe Curve near Altoona, Pennsylvania, and which restricted trains to 8 mph (13 km/h). After leaving Horseshoe Curve, a second, lesser-used ...
Other guests include Damon Wayans & Damon Wayans Jr., "Squid Games" lead actor Lee Jung-jae, actress Angela Bassett, singer Gwen Stefani, and rapper GloRilla.