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Optical supercavity drives tiny and efficient laser

New laser is based on effect first predicted in 1929

Flash Physics: Robot hugs broken heart, cool magnetic storage, antiprotons prop up Standard Model

Today's selection of need-to-know updates from the world of physics

Dark energy emerges when energy conservation is violated

Alternative explanation for accelerating expansion of the universe

Flash Physics: Tornado mystery solved at long last, nanoparticles self-heal, firm bags £35m nuclear contract

Today's selection of need-to-know updates from the world of physics

Squeezed light plays a quantum drum

Microscopic drum cooled below quantum limit

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Polymer welding with thulium lasers

Welding clear-to-clear polymers with thulium fibre lasers. A white paper from IPG Photonics

Quantum Science and Technology publishes first issue


We are delighted to announce that the first issue of our exciting new IOP Publishing journal, Quantum Science and Technology (QST), has now been published online. All articles published in this first issue are currently free to read until the end of 2017. Start reading these fascinating first papers today.

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Create films with the sounds of space

New competition invites people to get creative with scientific recordings

Run the solar system

Dust your trainers off and join the space race



Book of the Year 2016

Podcast Physics World book experts Tushna Commissariat and Margaret Harris discuss a few of the best popular-physics books of 2016 and announce the winner of the magazine’s annual book award

Why do physicists study matter under very high pressures?

Video Extreme conditions can lead to some interesting physics

What is spintronics?

Video A back-to-basics introduction to this emerging research field



Cuckoo forgeries – a bird's-eye view

Liz Kalaugher describes how researchers are visualizing how birds see to work out why they don’t reject cuckoo eggs


Decoding the quantum horizon

Patrick Hayden and Robert Myers describe how “qubits” may hold the key to quantum gravity



This time it's different

Robert P Crease claims the traditional model of scientific authority is defunct



Of old habits and new ideas

Controversy and opposition in the face of world-changing innovation has a long history and being an innovator is never plain sailing, says Wasiu O Popoola

Innovation & industry

Focus issue

Physics World Focus on Vacuum Technology

Free to read: Challenges, applications and solutions

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