Posts by: Hamish Johnston

The birthday party goes on at CERN

Sorry, you missed this concert by the UN Symphony Orchestra on 19 October, but there is more music coming up (Courtesy: CERN)

Sorry, you missed this concert by the UN Symphony Orchestra on 19 September, but there is more music coming up. (Courtesy: CERN)

By Hamish Johnston

All this week the people at CERN and in its member states will be celebrating 60 years of particle physics at the world-famous lab in Geneva. There is something for everyone to enjoy and here are a few highlights that we have picked out

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A scientific pyramid scheme, symmetry through the ages, why physics students are “standing a little taller” and more

Pyramid power: this lovely pyramid has nothing to do with postdocs. It is model of a much larger  Sierpinski tree that can be found on London’s South Bank.

Pyramid power: this lovely object has nothing to do with postdocs. It is a simpler version of a much larger Sierpinski tree that can be found on London’s South Bank.

By Hamish Johnston

Just this week six people were convicted in Bristol of crimes related to running a pyramid scheme. This involves taking money from lots of new investors and giving it to a smaller number of investors who signed up earlier – until the pyramid collapses. Is the current model for training scientists a pyramid scheme of sorts? That is the claim in a piece on the US’s National Public Radio (NPR) website written by Richard Harris.

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The secret life of hairdryers, the crackpot conundrum and mesmerizing animations

By Hamish Johnston

Secret lives will be revealed at the Science Museum in London (Courtesy: Batholith)

Its secret life will be revealed at the Science Museum in London. (Courtesy: Batholith)

If you happen to be in London next Saturday (20 September), the Science Museum is running a workshop called “The field life of electronic objects”. Participants will measure the electromagnetic fields surrounding everyday objects such as hairdryers and hard drives “to produce astonishing light images of these objects’ secret life”. Space is limited, the cost is £10 and you can register online.

One thing that we really struggle with here at physicsworld.com is comments from crackpots. My colleagues and I put a lot of effort into writing and editing articles that we believe will be of general interest to the physics community. There is nothing more soul-destroying than spending hours trying to understand and then explain a tricky piece of research only to see the comments on your article hijacked by someone promoting their own bizarre theory.

The American Physical Society (APS) takes a brave and novel way of dealing with crackpots – it gives them their own sessions at APS conferences. In “The Crackpot Conundrum”, blogger Henry Brown describes the mood at such sessions as depressing, something that I understand based on a session that I sat through. Brown then reviews some of the various ways that physics bloggers deal with crackpots and in a moment of deep introspection suspects that he might be seen by some as a crackpot!

Finally, if you are winding down on a Friday afternoon, you can put yourself in a trance by watching these mesmerizing animations by the Irish physicist David Whyte.

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Is desperation for new physics clouding our vision for new colliders?

By Hamish Johnston

This month marks the 60th anniversary of CERN and to kick-off our coverage here at physicsworld.com, I’m highlighting an essay on the future of collider physics that has just been written by Nobel laureate Burton Richter called “High energy colliding beams; what is their future?“.

Burton Richter

Burton Richter warns against desperation. (Courtesy: Stanford University)

Richter shared his 1976 Nobel prize with Samuel Ting for their independent discoveries of the J/ψ meson. He knows his particle colliders, having helped to design and build the world’s first collider in the late 1950s at Stanford University and later directing the Stanford Linear Accelerator Center for 15 years.

Richter believes that the international community is not facing up to tough decisions that must be made about what to do when the Large Hadron Collider (LHC) is retired sometime in the early 2030s. He thinks that “the perspective of one of the old guys might be useful”.

Planning the next huge collider involves the co-operation of three main groups of physicists: those who design and build the accelerators; those who design and build the experiments; and the theoretical physicists who work out what the experiments are looking for. Richter thinks that this is not going well at the moment.

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Radiation levels near Fukushima, trust in science and fun with correlations

Do divorcees eat more margarine? Or does the butter substitute break up marriages? (Courtesy: Tyler Vigen)

Do divorcees eat more margarine? Or does the butter substitute break up marriages? (Courtesy: Tyler Vigen)

By Hamish Johnston

This week’s Red Folder begins in Japan, where the 2011 disaster at the Fukushima nuclear power plant continues to cause misery for the 100,000 or so local people who still cannot return to their homes. But who is to blame? Writing in World Nuclear News, Malcolm Grimston of Imperial College London argues that radiation levels in much of the current exclusion zone are no higher than natural levels in other parts of Japan – and much lower than natural levels in some other populated regions worldwide. Grimston concludes that “an overzealous infatuation with reducing radiation dose, far from minimizing human harm, is at the heart of the whole problem”. His article is called “What was deadly at Fukushima?”.

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Shining a brighter light on topological transport

Topological light travels easily around the edge of the matrix yet gets muddled in the middle (Courtesy: JQI)

Topological light travels easily around the edge of the lattice, yet it gets muddled in the middle. (Courtesy: JQI)

By Hamish Johnston

Last year we reported on a fascinating experiment that simulated the quantum Hall effect using light. Mohammad Hafezi and colleagues at the Joint Quantum Institute (JQI) of the University of Maryland created a lattice of ring-shaped silicon waveguides that are placed just nanometres apart (see image above). This allows light in one ring to “tunnel”  into a neighbouring ring and make its way across the matrix, hopping from ring to ring.

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Ice cream that changes colour, tag-team parenting and the ITER director-general hits back

Shades of pink: the Xamaleón ice cream in action. (Courtesy: IceXperience)

Shades of pink: the Xamaleón ice cream in action. (Courtesy: IceXperience)

By Hamish Johnston

It has been a cracker of a summer here in south-west England, with lots of sunshine and temperatures in the mid-twenties just about every day. Not surprisingly, I have been eating my fair share of ice cream, but unlike this concoction whipped up by a physicist-turned-chef in Spain, the stuff you get in Bristol does not change colour when you lick it!

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Life after a nuclear bomb, farewell to MetroCosm and the nerdiest thing ever

 

(Courtesy: David Ng)

Observed change in Tatooine surface temperature 100BBY – 10ABY. (Courtesy: David Ng)

By Hamish Johnston

What’s it like to have a nuclear bomb dropped on you? Okay, I know the question is a bit heavy for this light-hearted column but I was really inspired by this piece about Shinji Mikamo who was less than a mile from the epicentre of the Hiroshima bomb. He was 19 at the time and not surprisingly the bomb changed the course of his life in many ways. What I found most amazing is that Mikamo managed to survive an explosion so intense that it blasted off the glass and hands of his father’s pocket watch, but not before imprinting the time of the blast on the watch’s melted face. The article is called “When time stood still” and it appears on the BBC website.

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A theremin fit for a gerbil, hairdos for physicists and the trouble with Richard Feynman

Calling all musical gerbils: a new take on the Theremin (Courtesy: Paul Goddard)

Calling all musical gerbils: a new take on the theremin. (Courtesy: Paul Goddard)

By Hamish Johnston

How we created spooky experimental music in a superconductor lab”: what physicist could resist clicking on this story, which appeared on the Guardian website earlier this week? Written by the physicist-turned-computational-biologist Andrew Steele, the article describes how Steele and a few pals converted a magnetic sensor into a musical instrument. Like the theremin, which is played by waving your hands around an antenna, this new instrument responds to the player’s motion. But because the sensor was optimized for studying superconductors rather than creating freaky mood music, Steele explains the “instrument covered three octaves in less than a centimetre of hand movement”. He suggests that playing the instrument should probably be left to a talented gerbil rather than talented superconductor researchers. You can listen to Steele’s attempt at making music on SoundCloud.

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Molecular footballs, knotty headphones and a naming contest for exoplanets

Is this exoplanet more of a Joanne than a Derek? You could soon be casting your vote to name 305 explanets

Is this exoplanet more of a Joanne than a Derek? You could soon be casting your vote to name 305 explanets. (Courtesy: IAU/M Kornmesser/N Risinger)

By Hamish Johnston

With the final two matches of the FIFA World Cup to look forward to this weekend, I thought I would sneak one more football-related story into the Red Folder. Over on the arXiv blog, there is a nice commentary about the topological nature of World Cup balls through the ages. Why? Well, two chemists in Taiwan have worked out a way to create a carbon-based molecule with the same shape as the football currently being used in the tournament in Brazil. Called the Brazuca, the ball is made from six panels that each have a four-leafed clover shape. Together, they form a structure with octahedral symmetry.

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