(Phys.org) —In a typical man-made sonar system, pulses of sound emitted by the projector bounce off hidden objects underwater. The echoes are then detected by the receiver to infer the location and size of the hidden objects.
The ship that sent an iceberg warning to the RMS Titanic before the ocean-liner sank has been identified lying in the Irish Sea.
Archaeology
Sep 27, 2022
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291
A new study shows how the brains of Egyptian fruit bats are highly specialized for echolocation and flight, with motor areas of the cerebral cortex that are dedicated to sonar production and wing control. The work by researchers ...
Plants & Animals
May 25, 2022
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180
A breakthrough study by a specialist European research team, including scientists at the University of St Andrews, shows man-made underwater noise pollution is picked up by whales in a similar way they sense natural predators, ...
Plants & Animals
Mar 23, 2022
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249
Researchers from the Queensland University of Technology and Griffith University have developed a method for turning small hair strands into carbon nanodots, which are tiny, uniform dots that are one-millionth of a millimeter. ...
Materials Science
Jun 8, 2020
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27
The sonar system of bats exploits spatial information in a way similar to our sense of sight, despite the different anatomy of eyes and ears. In a new study, scientists at the Max Planck Institute for Ornithology in Seewiesen ...
Plants & Animals
Apr 24, 2019
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22
By using underwater sonar, researchers have found that a glacier jutting into a freshwater lake in southern Chile looks different underwater compared to ocean-bound glaciers in Greenland. Their findings, published in the ...
Earth Sciences
Apr 2, 2019
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70
(Phys.org)—A team of researchers in China has solved the mystery of how porpoises are able to locate tiny prey using sonar with wavelengths that seem too large to be of much use in such applications. In their paper published ...
Throughout the world ocean, animals congregate at certain depths, forming layers that can be hundreds of meters thick and may extend horizontally for dozens or even hundreds of kilometers. Because these dense layers of animals ...
Ecology
Jul 10, 2017
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185
Australia's iconic tourist attraction, the Twelve Apostles, has received an unlikely boost in numbers with the discovery of five extra limestone columns hidden way below the water.
Earth Sciences
Mar 9, 2016
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15
