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RY
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==Science and technology== * [[Rydberg constant]], unit of energy used in quantum physics related to the ground state energy of the hydrogen atom * [[Consolidated RY]], former cargo aircraft of the U.S. Navy * [[RY Sagittarii]], star in the constellation Sagittarius * [[RY Tauri]], star in the constellation Taurus * [[RY (test signal)]], character string used to test five-level teleprinter channels
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