Word: sonare
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...taste of real underwater history, you might try the new CD-ROM Titanic: Challenge of Discovery ($30; Panasonic Interactive Media). The game, developed with Robert Ballard, who discovered the sunken ship 13 years ago this week, takes you on a virtual search mission complete with submarines, sonar systems, ocean rovers and the myriad challenges of the open sea. All aboard...
...Thompson's driving intellect pushed the technology, and his flatfooted, no-blarney confidence persuaded a consortium of Columbus businessmen to put up very large chunks of money. By the summer of 1987, the submersible was diving in deep water, to a large wooden wreck spotted by the expedition's sonar. Men and machinery worked beautifully, but what they proved was that the wreck was not the Central America...
...fishing fleet do so much damage so quickly? Until recently, many fish, especially deep-water fish, were too hard to find to make tempting commercial targets. But technical advances have given fishermen the power to peer beneath the waves and plot their position with unprecedented accuracy. Sonar makes it possible to locate large shoals of fish that would otherwise remain concealed beneath tens, even hundreds of feet of water. And once a fishing hot spot is pinpointed by sonar, satellite-navigation systems enable vessels to return unerringly to the same location year after year. In this fashion, fishermen from...
...axon on its incredible voyage is a "growth cone," a creepy, crawly sprout that looks something like an amoeba. Scientists have known about growth cones since the turn of the century. What they didn't know until recently was that growth cones come equipped with the molecular equivalent of sonar and radar. Just as instruments in a submarine or airplane scan the environment for signals, so molecules arrayed on the surface of growth cones search their surroundings for the presence of certain proteins. Some of these proteins, it turns out, are attractants that pull the growth cones toward them, while...
...however, may be able to detect the "signature sounds" of a bomb explosion on the cockpit voice recorder. Last week the sturdily armored recorders were still beneath the sea, but there were indications on Saturday that the steady beeps given off by the black boxes had been detected by sonar...