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At the Bottom of the Sea

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Hank Hogan

As Samuel Taylor Coleridge’s Ancient Mariner noted, there is water everywhere in the ocean, but none is fit to drink. The simple answer that the water is too salty is not informative enough for oceanographers. They want to know exactly what is in the water. In the past, that would have meant collecting samples via ship or submersible, with analysis done later in a laboratory. An instrument based on laser-induced breakdown spectroscopy could directly measure chemical elements as they emerge from the seafloor and spew from hydrothermal vents. In this artist’s conception, a sensor is...Read full article

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    Published: June 2007
    Glossary
    plasma
    A gas made up of electrons and ions.
    Accent on ApplicationsApplicationsbiological sensorschemicalsoceanographersplasmaSensors & Detectorsspectroscopy

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