Newton's cradle
(archaic) second-person singular simple present form of evert
plural of fibrositis
A device that demonstrates conservation of momentum and energy via a series of swinging spheres. When a sphere at one end is lifted and released, the resulting force travels through the line and pushes the opposite sphere upward, repeating the process as it swings back down.
(informal, humorous) A time of day, usually during the night or early in the morning, considered unreasonable or when one is prone to poor judgment.
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