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The Mapimí Silent Zone (Spanish: La Zona del Silencio) is the popular name for a desert patch near the Bolsón de Mapimí in Durango, Mexico, overlapping the Mapimí Biosphere Reserve. It is the subject of an urban legend that claims it is an area where radio signals and any type of communications cannot be received.
The anacoustic zone, also known as the zone of silence, is the region of the atmosphere of Earth above about 160 kilometers (99 mi) where the air density becomes so low that air molecules are not close enough to support transmission of sound waves within the hearing range. [1] [2]
The Bermuda Triangle, also known as the Devil's Triangle, is a loosely defined region in the North Atlantic Ocean, roughly bounded by Florida, Bermuda, and Puerto Rico. Since the mid-20th century, it has been the focus of an urban legend suggesting that many aircraft and ships have disappeared there under mysterious circumstances.
Date/Time Thumbnail Dimensions User Comment; current: 20:53, 2 February 2013: 1,600 × 1,200 (85 KB): Denniss: rev to original, please upload under a new name if you change label languages
Pick any one of the more than 50 ships or 20 planes that have disappeared in the Bermuda Triangle in the last century. Each one has a story without an ending, leading to a litany of conspiracy ...
In cartographic design, map coloring is the act of choosing colors as a form of map symbol to be used on a map. Color is a very useful attribute to depict different features on a map. [ 1 ] Typical uses of color include displaying different political divisions, different elevations, or different kinds of roads.
An Australian scientist says he has figured out the leading cause of the Bermuda Triangle disappearances. Here's the answer.
A skip zone is an annular region between the farthest points at which the ground wave can be received and the nearest point at which the refracted sky waves can be received. Within this region, no signal can be received because, due to the conditions of the local ionosphere, the relevant sky waves are not reflected but penetrate the ionosphere.