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Definitions

relativity

[rel-uh-tiv-i-tee] / ˌrɛl əˈtɪv ɪ ti /








Example Sentences

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This streamlined version—co-written with Leonard Mlodinow, a physicist and popular-science author—retains explanations of vital topics, such as the curvature of spacetime and Einstein’s theory of relativity, but dispenses with the drier sections.

From The Wall Street Journal • May 19, 2026

When scientists use general relativity to calculate collisions at extremely high energies near the Planck scale, the math stops working properly and produces infinities.

From Science Daily • May 19, 2026

When scientists combine relativity with quantum mechanics, however, the picture becomes even stranger.

From Science Daily • May 18, 2026

Quantum mechanics describes the behavior of particles at microscopic scales, while general relativity explains how gravity shapes the large-scale structure of the universe, including stars and galaxies.

From Science Daily • May 3, 2026

Because time slows down close to the speed of light, special relativity provides us with a means of going to the stars.

From "Cosmos" by Carl Sagan




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