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First multimessenger observation of a neutron-star merger is Physics World 2017 Breakthrough of the Year

International collaboration of astronomers and astrophysicists that ushered in new era of astronomy tops our list of the 10 key breakthroughs in physics this year

Continuous atom laser one step closer, say physicists

New way of cooling atoms is unveiled

Gyrated dice achieve perfect packing

A twist in the tale of granular compaction

Qubits transferred between atomic gas and a crystal

System uses optical fibre and three different photons

Kepler and Newton help solve mystery of how some algae swim

Biophysicists identify “universal law” of microbe motion

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White papers

This channel comprises content supplied by vendors.

Single molecule spectroscopy using tunable lasers

Research from the Max Planck Institute for the Science of Light in Erlangen, Germany. A white paper from HÜBNER Photonics 

Tunable lasers at work with trapped ions

Research from the AMO research group at the University of Freiburg, Germany. A white paper from HÜBNER Photonics 

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A puzzling neutrino detector, the best way to crumple cans

Excerpts from the red folder

Physics World‘s shortlist for Book of the Year 2017

Our picks for top physics books of the year



Exploring the cosmos with gravitational waves

Podcast Recent discoveries usher in a new era of multimessenger astronomy



When cold warms faster than hot

Jennifer Ouellette explores the controversially counterintuitive phenomenon of hot water freezing faster than cold – and why some scientists think a reverse effect may even occur too


Rising stars show their stripes

Physics World talks to early-career scientists in the US about the issues they face


How much self-promotion is enough?

Dalmeet Singh Chawla delves into the pros and cons of self-citations, as well as the possible benefits of the s-index



Opening up the physics closet

Michael Falk calls on physicists to create a better environment for minorities


What philosophers do

Robert P Crease explains what philosophers of physics get up to



What makes a mathematician

Margaret Harris enjoys the diverse collection of top mathematical geniuses profiled in Significant Figures by Ian Stewart


How to build a planet

The Planet Factory by Elizabeth Tasker offers a “thorough guide to how exoplanets are opening our eyes to the cosmic possibilities for life”, finds Louisa Preston


A little learning is a dangerous thing

“Buy this book. And read it. Regularly.” That’s the powerful summary by Philip Moriarty of The Death of Expertise by Tom Nichols

Innovation & industry

Focus issue

Physics World Focus on Neutron Science

Free to read Understanding lightning strikes, how industry exploits neutrons, balancing security and accessibility

For the latest features and products for those interested in innovation and industry, see our special sections on: