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experimental physics

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Video/image of a metronome whose arm is simultaneously ticking rightward and leftward.
quantum physics

How Quantum Physicists ‘Flipped Time’ (and How They Didn’t)

By Charlie Wood
January 27, 2023
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Two teams have made photons act as if time were simultaneously flowing in two directions. The experiments demonstrate a way to potentially boost the performance of quantum devices.

A woman stands in a darkened laboratory next to a shallow tank of water that glows green.
Q&A

She Turns Fluids Into ‘Black Holes’ and ‘Inflating Universes’

By Thomas Lewton
December 12, 2022
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By using fluids to model inaccessible realms of the cosmos, Silke Weinfurtner is “looking for a deeper truth beyond one system.” But what can such experiments teach us?

quantum gravity

Physicists Create a Holographic Wormhole Using a Quantum Computer

By Natalie Wolchover
November 30, 2022
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The unprecedented experiment explores the possibility that space-time somehow emerges from quantum information.

A graph that’s broken and crumbling
quantum physics

Experiments Spell Doom for Decades-Old Explanation of Quantum Weirdness

By Philip Ball
October 20, 2022
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Physical-collapse theories have long offered a natural solution to the central mystery of the quantum world. But a series of increasingly precise experiments are making them untenable.

A video in which a metallic cube floats above a dark disk as liquid nitrogen evaporates around them
condensed matter physics

High-Temperature Superconductivity Understood at Last

By Charlie Wood
September 21, 2022
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A new atomic-scale experiment all but settles the origin of the strong form of superconductivity seen in cuprate crystals, confirming a 35-year-old theory.

Dendritic ice crystals grow from top to bottom across the frame of a video.
condensed matter physics

Controversy Continues Over Whether Hot Water Freezes Faster Than Cold

By Adam Mann
June 29, 2022
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Decades after a Tanzanian teenager initiated study of the “Mpemba effect,” the effort to confirm or refute it is leading physicists toward new theories about how substances relax to equilibrium.

An illustration of a spherical universe sitting inside a machine hooked up to wires.
neural networks

How to Make the Universe Think for Us

By Charlie Wood
May 31, 2022
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Physicists are building neural networks out of vibrations, voltages and lasers, arguing that the future of computing lies in exploiting the universe’s complex physical behaviors.

An illustration of calipers that look blurry
quantum physics

Physicists Pin Down How Quantum Uncertainty Sharpens Measurements

By Ben Brubaker
May 3, 2022
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Throwing out data seems to make measurements of distances and angles more precise. The reason why has been traced to Heisenberg’s uncertainty principle.

Illustration in which the particles of the Standard Model are arranged as sections of a circle, but the W boson is too big and doesn’t fit.]
particle physics

Newly Measured Particle Seems Heavy Enough to Break Known Physics

By Charlie Wood
April 7, 2022
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A new analysis of W bosons suggests these particles are significantly heavier than predicted by the Standard Model of particle physics.


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