The air between its grains makes sand act like a fluid, according to physicists in the Netherlands who have dropped balls into sand in order to simulate meteorite impacts. By doing their experiments ...

SANTA BARBARA, Calif. — A simple toy is helping scientists understand new details of a mysterious quantum process. The rhythmic click-clacking of the metal balls in Newton’s cradle has long ...

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As noted in the video, the question of whether a curve ball really changes direction or only appears to was hotly debated for a long time, until Briggs settled it in the late 50s. This is one of those ...