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, ...

Atoms that occur in nature interact with the electromagnetic field at a single point, allowing scientists to make certain assumptions about energy levels with point-like references. However, ...

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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 ...

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

Rich, Charlie, Michael, and Audrey discuss the latest news out of Minneapolis, if Trump has lost his chance on Iran, and much more. The NR editors discuss the state of the political scene each week.

Flight of the grasshopper Work on how grasshoppers glide could result in new options to extend the flight time for insect-sized robots. (Courtesy: Princeton University/Sameer A Khan/Fotobuddy) While ...