Stephen Engelberg was the founding managing editor of ProPublica from 2008-2012 and became editor in chief on Jan. 1, 2013. He came to ProPublica from The Oregonian in Portland, where he had been a ...
Atom optics is the study of the wave-like properties of beams of atoms. Wave–particle duality — a central principle of quantum mechanics — implies that effects traditionally associated with waves, ...
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