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Definitions

relativity

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








Example Sentences

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Few ideas in modern science have reshaped our understanding of reality more profoundly than space-time — the interwoven fabric of space and time at the heart of Albert Einstein’s theory of relativity.

From Science Daily • Jun. 8, 2026

Quantum mechanics governs nature at the smallest scales such as particles, while Einstein’s theory of general relativity applies to gravity and spacetime.

From Science Daily • May 22, 2026

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

That discovery created one of the first meaningful links between string theory and general relativity.

From Science Daily • May 19, 2026

According to relativity, nothing can travel faster than light.

From "A Brief History of Time: And Other Essays" by Stephen Hawking




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