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January 13th, 2004
Twenty Years and Still Growing (Smaller)
September 30, 1983, saw the dedication of the National Center for Electron Microscopy at Lawrence Berkeley National Laboratory and the unveiling of its proudly named Atomic Resolution Microscope. The first instrument able to distinguish atoms in a solid, for ten years ARM's 1.6-angstrom imaging resolution was the best of any transmission electron microscope in the world. Housed in a neighboring steel tower was the High-Voltage Electron Microscope, with lower resolution but a highly penetrating, 1.5-million-electron-volt beam, the highest voltage in the U.S.
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