submersibles
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Triton 36,000 submarine to plumb ocean's deepest depths, comes in yellow (video)
Richard Branson's not the only one eager to explore that other 70 percent of the world. Triton Submarines has designed a three-passenger sub able to dive 36,000 feet, reaching the deepest part of the world's oceans. And while Sir Richard envisions a spaceship-like craft, Triton's design evokes old school bathyspheres: it's a glass globe. Of course, water pressure poses a serious engineering challenge when you descend seven miles below the surface -- the last manned sub to reach that depth had only a single, small window made of plexiglass. The current design uses borosilicate glass (like those transparent displays we, um, saw through a while back) that actually grows stronger as depth pressure increases; it took eight months of careful heating and cooling to produce. Assuming the glass holds, it will take about 75 minutes to reach the bottom of the ocean. Anyone considering a test run should check out the PR video after the break, showing Triton's other submarines in action.
Robotic submersibles take on fish-like sensing abilities
Controlling your fish remotely is one thing, but utilizing fish sense to dictate the actions of an uncrewed submersible is an entirely different animal. Malcolm MacIver and colleagues at Northwestern University have created an "artificial electric-field sensing system that could ultimately give robotic subs the same additional sensory capabilities" as found in weakly electric fish. These particular sea-dwellers have an uncanny ability to sense electric fields, and can also generate their own to "help navigate, identify objects, and even communicate with other fish." The newfangled "electro-location" system could allow underwater bots big and small to more accurately maneuver and collect data, particularly in situations where precise movements and recognition of surroundings is important. Even the creators admit that it'll be quite some time before man made sensors can come close to mimicking those found in nature, but judging by the videos seen in the read link, they're certainly riding the right wave.[Via NewScientistTech]
