atomic fluorescence spectroscopy

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Hemp (Cannabis sativa).

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Dr. Martin Luther King Jr. addresses marchers during his "I Have a Dream" speech at the Lincoln Memorial in Washington. August 28th 1963

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Andrew Jackson delivering a speech while on his way to Washington, D.C., for his inauguration in 1829. From Harper's Weekly, 1881.

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United States Presidential Election of 2012. Mitt Romney. Official portrait of President Barack Obama in the Oval Office, Dec. 6, 2012 after his reelection Nov. 6, 2012. Official portrait Obama

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atomic fluorescence spectroscopy: Media

chemistry

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energy level diagrams

(Left) The energy level diagram of ruby with allowed transitions and (centre) the...

From K. Nassau, Physics and Chemistry of Color (1983); John Wiley & Sons, Inc.