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Physics

How a century-long argument over light’s true nature came to an end

Two of the forefathers of quantum theory, Albert Einstein and Niels Bohr, had a famous argument over whether light is a wave or a particle. Columnist Karmela Padavic-Callaghan finds that the matter has been settled once and for all

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Cracked blue bowl with equations, stars, planets and galaxies decorating its exterior. It is cracked but golden glue sticks it back together.

Physics

We're solving the fundamental mystery of how reality is glued together

Features

A once-fantastical collider could answer physics’ biggest mysteries

Physics

A once-fantastical collider could answer physics’ biggest mysteries

Features

Physics

How Anthony Leggett pushed the boundaries of quantum physics

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Physics

Computer finds flaw in major physics paper for first time

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Physics

Temperature gets a new definition using a quantum device

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Physics

Physicists create formula for how many times you can fold a crêpe

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Physics

Particle discovered at CERN solves a 20-year-old mystery

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Person looking up at starry night at Spiral Jetty, USA. Provider: Alamy Stock Photo Source: www.alamy.com Copyright: Celestine Dagli/Alamy

Physics

Would aliens do physics, or is science a human invention?

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Fractal conceptual illustration of supersymmetry or superstrings. Supersymmetry (SUSY) is a particle physics theory that proposes a type of spacetime symmetry relating two basic classes of elementary particles: bosons, which have an integer-valued 'spin', and fermions, which have a half-integer spin. If supersymmetry is a true symmetry of nature, it would explain many mysterious features of particle physics and would help solve paradoxes such as the cosmological constant problem. There is only indirect evidence for the existence of supersymmetry, primarily in the form of evidence for gauge coupling unification. Direct confirmation would entail production of superpartners at collider experiments, such as at the Large Hadron Collider.

Space

A crisis in cosmology may mean hidden dimensions really exist

Physicists are scrambling to understand why dark energy is weakening. In a surprising twist, we must now reconsider the possibility that our reality contains extra dimensions

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Physics

The mystery of nuclear 'magic numbers' has finally been resolved

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Physics

Backwards heat shows laws of thermodynamics may need a quantum update

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Physics

Time crystals could be used to build accurate quantum clocks

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Physics

Physicists warn of 'catastrophic' impact from UK science cuts

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