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The weird rules of temperature get even stranger in the quantum realm

Physics

The weird rules of temperature get even stranger in the quantum realm

Can a single particle have a temperature? It may seem impossible with our standard understanding of temperature, but columnist Jacklin Kwan finds that it’s not exactly ruled out in the quantum realm

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Conceptual illustration of quantum fluctuations

Physics

The universe may be hiding a fundamentally unknowable quantum secret

News

BEIJING - AUGUST 11: (L-R) Eamon Sullivan of Australia, Michael Phelps of the United States and Amaury Leveaux of France compete in the Men's 4 x 100m Freestyle Relay Final held at the National Aquatics Center on Day 3 of the Beijing 2008 Olympic Games on August 11, 2008 in Beijing, China. The United States finished the race in first place in a time of 3:08.24 and wins the gold medal and set a new World Record. Eamon Sullivan of Australia set a time of 47.24 in the first leg, a new World Record. (Photo by Adam Pretty/Getty Images)

Physics

Engaging look at friction shows how it keeps our world rubbing along

Culture

Plastic bottle in a breaking wave

Physics

A remarkable book on quantum mechanics reveals a really big idea

Culture

IBM Quantum System Two

Technology

Most complex time crystal yet has been made inside a quantum computer

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Reflections in a canal

Physics

We have a new way to explain why we agree on the nature of reality

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Illustration of nanoparticles

Physics

The edge of the quantum world just moved closer to our reality

News

Embracing quantum spookiness: Best ideas of the century

Physics

Embracing quantum spookiness: Best ideas of the century

Features

91av’s guide to the 21 best ideas of the 21st century

Humans

91av’s guide to the 21 best ideas of the 21st century

Features

Our elegant universe: rethinking nature’s deepest principle

Physics

Our elegant universe: rethinking nature’s deepest principle

For centuries, the principle of symmetry has guided physicists towards more fundamental truths, but now a slew of shocking findings suggest a far stranger idea from quantum theory could be a deeper driving force

Features

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The best new popular science books of January 2026

Culture

Physics

Ghostly particles might just break our understanding of the universe

News

Physics

A controversial experiment threatened to kill the multiverse in 2025

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Physics

Inside world's ultimate X-ray machine before it becomes more powerful

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