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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Paul A. Gigot is the editorial page editor and vice president of The Wall Street Journal, a position he has held since 2001. He is responsible for the publication's editorials, op-ed articles and ...

Elections are the one opportunity we have to see what the people think. And what they think is clear: Trump sucks.