This site uses cookies. By continuing to use this site you agree to our use of cookies. To find out more, see our Privacy and Cookies policy.
Skip to the content

Share this

Free weekly newswire

Sign up to receive all our latest news direct to your inbox.

Physics on film

100 Second Science Your scientific questions answered simply by specialists in less than 100 seconds.

Watch now

Bright Recruits

At all stages of your career – whether you're an undergraduate, graduate, researcher or industry professional – can help find the job for you.

Find your perfect job

Physics connect

Are you looking for a supplier? Physics Connect lists thousands of scientific companies, businesses, non-profit organizations, institutions and experts worldwide.

Start your search today


The June 2015 issue of Physics World is now out

By Matin Durrani

For nearly three decades, physicists have been unable to answer a seemingly simple question: where does proton spin come from? Adding up the spins of the three quarks that make up the proton seems, in principle, straightforward, but physicists have been struggling with a strange problem: the sum of the spins of its three quarks is much less than the spin of the proton itself.

Cover of Physics World June 2015

Known as the “spin crisis”, the topic appears as the cover story of the June 2015 issue of Physics World, which is out now in print and digital formats. In the feature article, science writer Edwin Cartlidge examines the origins of the problem – and whether new experiments could mean we are about to solve it at last.

If you’re a member of the Institute of Physics (IOP), you can get immediate access to the feature with the digital edition of the magazine on your desktop via or on any iOS or Android smartphone or tablet via the Physics World app, available from the App Store and Google Play. If you’re not yet in the IOP, you can join as an IOPimember for just £15, €20 or $25 a year to get full digital access to Physics World.

The issue also includes a great Lateral Thoughts article by Felix Flicker that’ll have you twisting and bending your arms as you try to follow what he’s on about.

For the record, here’s a rundown of what else is in the issue.

• UK to host SKA headquarters – Giant radio telescope’s HQ will be at Jodrell Bank, despite a “compelling” bid from its rival, as Edwin Cartlidge reports

• STEM paradox revisited – Matin Durrani on why employers struggle to find physicists when many physicists can’t find jobs

• Black elephants – Robert P Crease writes about scientific rituals that we recognize but don’t talk about

• Plugging the gap – Accelerator science plays an important part in basic science, medicine and industry, but as Carsten Welsch warns, a skills shortage threatens progress

• The spin of a proton – For the best part of 30 years physicists have been unable to answer a seemingly simple question: where does proton spin come from? As Edwin Cartlidge reports, the answer may finally be within reach

• Through a glass, darkly – The story of light-emitting diodes is one of creeping ever
further up the frequency spectrum. With several big semiconductor firms now mass-producing light-emitting diodes in the ultraviolet range, these devices are set to replace mercury-vapour lamps in a range of applications. Richard Corfield reports

• Edging into the spotlight – Stephen Ornes explores the strange properties of lattices that are bendy at the edges but not in the bulk, and how they could inspire novel metamaterials that can store data or lead to building materials that only fail in predictable ways

• Tinker, tailor, physicist, spy? – Simon Turchetti reviews Half-Life: the Divided Life of Bruno Pontecorvo, Physicist or Spy by Frank Close

• The cradle of science – Paul Montgomery reviews To Explain the World: the Discovery of Modern Science by Steven Weinberg

• Ruling the seas – Paul Featonby from Tracerco explains how a background in physics has helped him design and build undersea diagnostic equipment for the oil and gas industry

• Once a physicist – Roma Agrawal on her life as a structural engineer

• The weirdness of timezones – Felx Flicker on the art of transporting things when space is curved

This entry was posted in General and tagged , , . Bookmark the permalink.
View all posts by this author  | View this author's profile

Comments are closed.


  • Comments should be relevant to the article and not be used to promote your own work, products or services.
  • Please keep your comments brief (we recommend a maximum of 250 words).
  • We reserve the right to remove excessively long, inappropriate or offensive entries.

Show/hide formatting guidelines

Tag Description Example Output
<a> Hyperlink <a href="">google</a> google
<abbr> Abbreviation <abbr title="World Health Organisation" >WHO</abbr> WHO
<acronym> Acronym <acronym title="as soon as possible">ASAP</acronym> ASAP
<b> Bold <b>Some text</b> Some text
<blockquote> Quoted from another source <blockquote cite="">IOP</blockquote>
<cite> Cite <cite>Diagram 1</cite> Diagram 1
<del> Deleted text From this line<del datetime="2012-12-17"> this text was deleted</del> From this line this text was deleted
<em> Emphasized text In this line<em> this text was emphasised</em> In this line this text was emphasised
<i> Italic <i>Some text</i> Some text
<q> Quotation WWF goal is to build a future <q cite="">
where people live in harmony with nature and animals</q>
WWF goal is to build a future
where people live in harmony with nature and animals
<strike> Strike text <strike>Some text</strike> Some text
<strong> Stronger emphasis of text <strong>Some text</strong> Some text