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Headlines

April fool joke: Physicist calls for 'British Pi Day'

Extra day in April would allow billions to celebrate Welsh mathematician who introduced the symbol π

Graphene sandwich squares away ice

New research reveals a previously unknown phase of ice

Entangled photons cast a new light on cause and effect

Correlation can imply causation in the quantum world, say physicists

'Twisted light' gives quantum cryptography a boost

Technique could make cryptographic systems more resilient to eavesdroppers

Acoustic topological insulator could hide submarines

Hearing aids could benefit from lattices of rotating cylinders

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Thermal imaging cameras help characterize solar cell performance

An overview of the methods in which FLIR Systems infrared cameras can be used to characterize solar cell performance. A white paper from FLIR Systems

Hexapods help measure stress in a model

Precise positioning with six degrees of freedom in measurement set-ups. A white paper from PI (Physik Instrumente)

Journals from IOP Publishing show Impact Factor growth

journals

The 2013 Impact Factors, published by Thomson Reuters, once again show growth for many of the journals published by IOP Publishing (IOP).

Click here for more information.

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Blog

Littered with errors

Wrong type of cat litter blamed for leak at a nuclear storage facility

Five amazing physics demonstrations

Get inspired about practical physics with the April 2014 issue of Physics World, which is now out

Multimedia

video

Amazing science demo one: The Vacuum Bazooka

Video A vacuum cleaner is turned into a bazooka in a demonstration of various physics principles

video

Reclaiming the stars

Video An amateur astronomer struggles to find darkness amid the dazzling lights of New York City

Features

feature

Your career questions answered

Nobel laureate Shuji Nakamura on winning the prize and what comes next

Your career questions answered

Margaret Harris explores the findings of a recent survey that asked physics students to share their career concerns and aspirations

Opinion

opinion

Meet the kaleidoholics

Robert P Crease stumbles into the incredible world of a "philosophical toy" that's 200 years old

Reviews

review

Bringing the quantum to life

Jim Al-Khalili and Johnjoe McFadden's primer on quantum biology hits the mark with Marta Varela

Innovation & industry

industry

Physics World Focus on Vacuum Technology

Free to read: Our pick of some of the best recent advances in vacuum science

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

Fusion

Optics

Vacuum