| Added | Sun, 09/10/2016 |
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Used to make the wire visible, and prevent Christiania wires. Installed at the intersections of waterways, roads, places of migratory birds near airports, etc. the color of the marker balls is chosen so that the balloons are distinguishable from the surrounding area.
The color of the marker balls is chosen so that the balloons are distinguishable by pilots of vessels of small aircraft in the background of the surrounding landscape in the daytime. It is recommended to place the balls of alternating colors, e.g. orange-white-orange-white, etc. to increase visibility at different times of the year (in snow, on a background of green grass on the background of the water obstacles).
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Markers of wires at the test site. Before the flight, intended to check the operation of the system of rescue of astronauts in case of an accident.
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A warning sign about obstacles on the air line near the runway.
Power line markers used to reduce collisions with birds in a study conducted in central North Dakota, USA, from 2006 to 2008:
(A) BirdMark Flapper (P&R Tech),
(B) Swan Flight Diverter (finished linear products),
(C) Firefly Flap (P&R Tech) without moving parts. The scale of all 3 photos is 1 m from the left edge to the right edge.
In the 1800s, before naming roads became common practice, intersections were often given names to designate settlements and landmarks.
The trail through Brass Ball Corners started at Lake Michigan and went west through Lake Geneva to Janesville. Farmers and traders often walked along the trail, transporting grain, furs and lead to the port of Kenosha.
In 1842, farmer Seth Huntoon realized the growing need for a place where travelers could relax. He built a hotel on the northwest corner of a busy intersection, and then hung a gilded wooden ball at the intersection. Because of its resemblance to brass, the intersection became known as Brass Ball Corners.
Over time, the corners grew, as a school, a post office, a church, a shoemaker and several houses were built on the corner. The community eventually became the village of Paddock Lake. Today, a replica of a brass ball hangs nearby. Installed in 2005 by the Wisconsin Historical Society.
Balisor is a system of light beacons for high—voltage power lines using a low-pressure neon lamp with a cold cathode, used as an aircraft signal lamp.
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