December 5

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Better Than News

Beyond Plausible

In Other Words

Are You Sure

• ... that physicist and academic Werner Heisenberg (5 December 1901 – 1 February 1976) introduced the uncertainty principle, a fundamental principle of quantum mechanics which asserts a fundamental limit to the precision with which certain pairs of physical properties of a particle can be known, given any of a variety of mathematical inequalities?

Selected Anniversaries

Topic of the Day

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