Word: sonar
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Dates: during 2000-2009
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Jeffrey C. Munns ’03 sits in the front row. He is the battalion commander this semester and so he coordinates activities for all the midshipmen at MIT. This morning he stays awake through the basics of sonar and how sound travels underwater. Most of the back row nods off periodically...
...This time, the theorists say they weren't even looking for the Lost Continent. They were bounty hunting for sunken galleons and such (they say they've found one of those, too, and it's going to make them rich). Then when they peered at this sonar photography being sent up from the extreme deep - lo, there were massive stones in geometric patterns and . . . yes!. . .the outline of a city and . . . with an entire community surrounding, all on a vast undersea plain off the west coast of Cuba. I've read a few accounts of the find, now, and have...
...scientists have even linked whale groundings to magnetic anomalies that can play havoc with the internal compasses on which whales seem to depend for navigation. One scenario, however, has been pretty much dismissed in this case: disruption by underwater sonic booms from the powerful new U.S. Navy submarine-hunting sonar that recently inflicted fatal hearing damage on beaked whales in the Bahamas--and prompted an outcry from environmentalists when the Bush Administration allowed these exercises to continue. "Extremely unlikely," says Woods Hole Oceanographic Institution's Darlene Ketten, an expert on marine-mammal hearing who found hemorrhaging and other signs...
...rocked by the gentle motion of the waves. Haji, the 68-year-old, one-eyed captain, was up in the darkened bridge, sitting cross-legged on a stool to the right of the wheel, making constant and almost imperceptible adjustments to the course of the ship. Navigational instruments?radar, sonar and GPS?glowed faintly on the control panel, but Haji paid them no heed. He has been sailing these waters since his youth; subtle changes in the shape of the coast and the position of the stars are all he needs to know exactly where he is. Just before dawn...
...always on time. She never complains. And she's cute too. Meet CoWorker, the office robot. About 3 ft. high, this Pentium-powered bot uses sonar sensors to keep her from bumping into walls and people as she rolls along at a languid one mile an hour. A digital camera perched atop her rotating, cranelike neck can wirelessly transmit pictures of remote assembly lines, construction sites or high-security areas straight to the boss. A home version, tentatively planned for the future, might keep an eye on granny--or the nanny...