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Stories about: spectrometer

Spirit's Tracks Reveal Bright Soil Behind Over the past few weeks, Spirit has been making its way to the Goddard and Von Braun features, having departed the “Home Plate” plateau, where it spent the rugged Martian winter. Looking back with its cameras, the robotic probe took snapshots of its own trails, sending back images that took NASA by surpri... 1 April 2009 10:51 GMT Mini 11, World's Smallest Explosive or Bio-Terrorism Detector The analytical technique of mass spectrometry allows the identification of the chemical composition of a sample or of a compound  based on the mass-to-charge ratio of its charged particles (ions). This ratio of the particles is observed via passing them through the electric and magnetic fields of a mass spectrom... 31 October 2008 09:33 GMT 111 Years Ago, Thomson Discovered the Electron On 30 April 1897, at the Royal Institution Friday Evening Discourse, Joseph John Thomson announced that he had discovered 'corpuscles', bodies smaller than the hydrogen atom and bearing a negative electric charge. These corpuscles were later named 'electrons', and were the first subatomic particle... 30 April 2008 05:56 GMT