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In 1962, another New Zealand inventor, Doug Phillips, invented the non-shortable electric fence based on capacitor discharge. [16] [17] This significantly increased the range an electric fence could be used from a few hundred metres to 35 km (~20 miles), and reduced the cost of fencing by more than 80%. [18]
In areas where such a tall fence is unsuitable (for example, on mountains subject to very high winds), deer may be excluded (or contained) by a fence of ordinary height (about 1.5 metres [4 feet 11 inches]), with a smaller one of about 1 metre (3 feet 3 inches) high, about 1 metre (3 feet 3 inches) away from it, on the same side as the deer.
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These systems are low cost and easily installed on existing fences, but can only be fence mounted and are unable to analyze differences in the pattern of vibrations (for example, the difference between gusts of wind and a person climbing the fence). For this reason, this technology is gradually being replaced by digital accelerometer-based systems.
Right of way drawing of U.S. Route 25E for widening project, 1981 Right of way highway marker in Athens, Georgia Julington-Durbin Peninsula power line right of way. A right of way (also right-of-way) is a transportation corridor along which people, animals, vehicles, watercraft, or utility lines travel, or the legal status that gives them the right to do so.
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