| 1. | In a FEL, electrons move through magnetic periodic systems producing electromagnetic radiation.
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| 2. | At first the periodic system did not raise interest among chemists.
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| 3. | One repeating unit of this hypothetical periodic system is called a " unit cell ".
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| 4. | He taught at Southern Adventist University and conducted extensive research on periodic systems of small molecules.
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| 5. | They were first called physical periodic systems.
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| 6. | In 1933 Clark published a novel spiral chart of the periodic system of the chemical elements.
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| 7. | In 1840, Stas was appointed professor at the periodic system of elements of Dmitri Mendeleev and others.
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| 8. | "' Periodic systems of molecules "'are charts of molecules similar to the periodic table of the elements.
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| 9. | Pomeau and Manneville described three routes to intermittency where a nearly periodic system shows irregularly spaced bursts of chaos.
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| 10. | Superconductivity occurs in many metallic elements of the periodic system and also in alloys, intermetallic compounds, and doped semiconductors.
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