In the past I’ve linked to all kinds of periodic tables, from the edible to the audiovisual. Now, someone’s gone all meta and created a periodic table to list all of these periodic tables:

You can see a larger version here, complete with links to all the other tables.

And you think your job is tough…

Popular Science has drawn up a list of the ten worst jobs in science, which includes thankless tasks such as “armpit detective” and “whale slasher”. Don’t let them put you off pursing a career in science however, as the list also reveals the best job: “multispecies baby tickler”. Where do I sign up?

Fire! De der deeeer, der der…

A Ruben’s tube is a nifty demonstration of standing waves with a healthy dose of burnination:

A really geeky maths joke

I probably find this joke far more amusing than I should:

An engineer, a physicist and a mathematician find themselves in an anecdote, indeed an anecdote quite similar to many that you have no doubt already heard.

After some observations and rough calculations the engineer realizes the situation and starts laughing.

A few minutes later the physicist understands too and chuckles to himself happily as he now has enough experimental evidence to publish a paper.

This leaves the mathematician somewhat perplexed, as he had observed right away that he was the subject of an anecdote, and deduced quite rapidly the presence of humour from similar anecdotes, but considers this anecdote to be too trivial a corollary to be significant, let alone funny.

Here’s an extract from an article I wrote for New Scientist in honour of Pi Day today.

The stars overhead inspired the ancient Greeks, but they probably never used them to calculate pi. Robert Matthews of the University of Aston in Birmingham, UK, combined astronomical data with number theory to do just that.

Matthews used the fact that for any large collection of random numbers, the probability that any two have no common factor is 6/pi2. Numbers have a common factor if they are divisible by the same number, not including 1. For example, 4 and 15 have no common factors, but 12 and 15 have the common factor 3.

Matthews calculated the angular distance between the 100 brightest stars in the sky and turned them into 1 million pairs of random numbers, around 61 per cent of which had no common factors. He got a value for pi of 3.12772, which is about 99.6 per cent correct.

A serious science survey?

The BBC reports that one in 10 children believe the Queen invented the telephone, while others suggest Charles Darwin and Noel Edmonds. The results come from a survey of 1,000 school kids, but rather than despairing at the state of science education, I’m actually amused by this story.

These types of articles seem to crop up fairly often, with children giving nonsensical answers to questions about historical facts. Everyone always interrupts them fairly seriously, but I think it’s far more likely that the kids are just having a laugh.

High-gravity lava lamps

Would a lava lamp work on Jupiter? There’s only one way to find out – build a giant, semi-lethal centrifuge out of Meccano, and take your lamp for a spin:

Chemical party

Chemical reactions can get pretty wild, but I bet you’ve never seen them like this:

Strength in small numbers

Check out this amazing picture of an ant lifting 100 times its body weight – that’s like me hoisting 5 cars at the same time!

This photo won Dr Thomas Endlein of the University of Cambridge Zoology Department first prize in the Biotechnology And Biological Sciences Research Council science photo competition. You can see the other winners on the BBSRC site.

Well, it works for monkeys…

Did you know that learning to climb trees has much in common with the scientific method? This quaint short film explains it all – love the use of Wikipedia as “a source of reliable information”!

The media loves their end-of-year lists, and science magazines are no exception. Popular Science has 62 of this year’s most amazing scientific images. Bit of a random number, but they’re great – check out this nanoscale nuclear war, which was accidentally produced during the construction of 175-nanometre-wide wires:

Robots under the sea

Also included in the Pop Sci list are these robotic jellyfish, which I discovered independently earlier this week. They’re extremely lifelike, but I guess that’s easier to achieve when you’re dealing with something as alien as jellyfish!

Have yourself a very little Christmas

Missing from the Pop Sci list however was this tiny winter creation:

At just 0.01mm across, the world’s smallest snowman was made by scientists at the UK National Physical Laboratory. They welded two beads of tin together with platinum to form the head and body, then carved the eyes and mouth with a focused beam of ions. Finally, another blob of platinum finish provides the snowman’s nose. What, no nano-carrots?

LHC a-go-go

The Large Hadron Collider is finally up and running again! As our CERN correspondent Emma mentioned last month, scientist in Geneva have been working on restarting the LHC after it had to be shut down last year. Their hard work paid off on Friday, and proton beams are now successfully colliding in the 27km-long ring of the world’s largest experiment. Now for the science!

What if the Earth had rings?

Speaking of rings, check out this short video showing how it would look if Earth had its own set, like Saturn.

At the equator they appear to be a thin line through the sky, but further north or south they make an amazing sight, lighting up the sky even at night. Anyway we can build these things and cover them in solar panels or something?

Field less players to win the World Cup

It seems that having a large squad to choose from can actually be a hindrance when it comes to top football. You might think fielding substitutions lets mangers pick the best players for every situation, but research shows that sticking with the top 11 is the key to success.

Bacteria that can detect landmines

Scientist at the University of Edinburgh have developed a strain of bacteria that glow green near explosives. By mixing them with a colourless solution, they can be sprayed from the air on to suspected landmine fields, turning the ground green if mines are detected.

Anyway, onto other news here at CERN:

• after cool down of the LHC to operational temperature the proton beams have made their way half way around the LHC ring.
• wet road + dead leaves = skidding (the phrase no shit springs to mind..)
• what is considered first physics day (the day where collisions will occur at a high enough energy to produce new data) is now likely to be in February.

And, in an exciting development, another complex construction project has recently reached its completion: The ATLAS pop-up book.

Voyage to the Heart of Matter was officially launched to a press-packed room at the Royal Institution in London last week. I’ve been lucky enough to see this project progress from early prototype stages to completion, as it was written and designed by my boss – Emma Sanders along with a pop-up professional Anton Radevsky.

For those who don’t know, the ATLAS detector is one of the four main experiments situated around the LHC ring at CERN. It is a general-purpose detector and has been designed to measure the broadest possible range of signals. One of its main aims is to find the elusive Higgs Boson particle. Without evidence of this particle the very foundations of particle physics remain uncertain, including why the fundamental particles have different masses. The detector will also look at dark matter, super-symmetry, and extra dimensions in an attempt to better understand the universe around us, and its origins.

So, to the book – Voyage to the Heart of Matter aims to communicate the aims of ATLAS in a fun and accessible way. Whilst only four pages long, it’s certainly not a short read, or a conventional pop-up book. In one word it’s simply awesome. The level of detail combined with the ingenuity of the pop-ups is fantastic. The book includes a pop-up control room, big bang and a model of the ATLAS detector that you can build yourself (sneaky peek video)! In what is a relatively small amount of text the science content does exactly what you want it to – it’s inspiring, informative and insightful. Balanced well with the visual content, the text aims to show just how ATLAS works and the amazing technology that is needed to build these experiments.

Hannah Devlin of The Times was at the Royal Institution to pick up a copy, and you can read her thoughts over at Eureka Zone. It has also been featured on science blogs all over the web, and even has it’s own Facebook group!

The book will be available from the start of December at CERN, but if you’re not planning a visit you can also pick up a copy from Amazon, or direct from the publisher, Papadakis. With a price tag of 30CHF or £20 it’s a pretty interesting and unusual Christmas present (in my opinion anyway… but then again, I might just be a huge science geek!)

Earlier this week the Large Hadron Collider suffered yet another setback, when it was dive-bombed by a bird carrying a piece of baguette. You just can’t make it up.

The rogue bit of bread caused a short circuit in part of the LHC’s above-ground electronics, leading to an automatic shutdown of the giant ring’s cooling system. Thankfully the LHC was only knocked offline for a few days this time, and systems are now running normally. Lets just hope the scientists at Geneva have invested in a couple of scarecrows.

Eating fast makes you fat – now we know why

It’s often said that eating too fast will lead to putting on weight, because your brain doesn’t have enough time to catch up with your full stomach. Now, new research has found a possible physiological explanation for why this might happen.

Dr Alexander Kokkinos of the Laiko General Hospital in Athens found that eating too quickly can slow the release of two hormones from the gut, PYY and GLP-1. Volunteers were given 300ml of ice cream to eat at different rates, and those who ate the slowest had the highest hormone concentration.

X-rays top the charts

Back in June I reported on a Science Museum survey to pick the most influential scientific infection in their collection. The results are in, and it seem X-rays take the top spot, followed by penicillin and the DNA double helix.

It’s a bit of an odd choice, I think. In my original post, I went for the Pilot ACE Computer, because it was the first multi-tasking computer. It seems others disagreed though, because it came in at a lowly seventh place. Still, X-rays over penicillin? I’ve taken antibiotics far more than I’ve been X-rayed, as have most people I would’ve thought. Strange.

The source of the steam are the huge cooling towers required by the Large Hadron Collider (LHC). A complex cryogenic system sits in the tunnel of the LHC in order to cool the tunnel and equipment to 1.9 kelvin. This is no mean feat, as 1.9 kelvin equates to -271C or -456F which is much colder than outer space (around 2.7 kelvin). However, the temperature needs to be so low so that the magnets can become ’super-conducting’ – conducting electricity with zero resistance.

Not only is it very difficult to achieve this low temperature, but the equipment within the tunnel has had to be carefully designed to withstand such low temperatures. As we all know from our early science lessons at school, if you cool a liquid down the molecules have less kinetic energy, and become a solid. When a solid is cooled the same occurs, and basically leads to the solid contracting.

This was one of the reasons for the problem when the LHC started up last year – the ‘quench’ described by the physicists at CERN was essentially caused by a faulty magnet. Part of the magnet designed to be able to withstand the contraction fractured, leading to a leak of liquid helium, which then caused problems to the surrounding areas of the LHC tunnel.

CERN physicists have therefore spent the last 13 months carefully checking and replacing magnets, and installing a new quench protection system.

The announcement that 1.7 kelvin has been reached is indeed exciting news, as it means that the physicists at CERN can begin to feed particles into the ring, and test the new quench protection system.

The next developments to watch out for will be the circulation of a beam around the whole LHC ring, expected by the end of November. At the moment, the first collisions are likely (realistically) in January.

On another note, talk in Restaurant 1 at CERN have turned to news of Adiene Hicheur, a French-Algerian physicist suspected of links with Al-Qaeda.

The story broke first on the French news sites, before hitting the English news stands later in the day. Quite interestingly Hicheur works for the same experiment as me – LHCb, so I heard about the news before most at CERN.

Some of the news stories surrounding this have been quite funny. I guess this is because most don’t really understand what CERN does, and then there’s the fact the organisation’s title is ‘Organisation Européenne pour la Recherche Nucléaire’ and we all know what happens to people when they hear the word nuclear don’t we….

But, contrary to some of the more far fetched stories there’s not that much to worry about. Although it is a bit strange to think that someone associated with Al-Qaeda might have been sat just down the corridor from me, he actually had very little security clearance, and didn’t have access to the LHC tunnel or ‘the pit’ where the LHCb experiment is housed. Plus, even if he did, i’m not sure what he’d be able to do with it!!

Oh and to all those with ideas of antimatter in their heads and cities being destroyed (thanks Angels and Demons)… it’s not like you’d be able to walk out of the door with a tank of it hidden under your coat! And even if antimatter were easily portable, CERN has only produced enough to light an electric light bulb for a few minutes in all the years they’ve been studying antimatter….!

Maybe I’m just a big nerdy kid, but it seems I just can’t resist plush versions of scientific concepts. Earlier this year we had internal organs, and now this week I came across The Particle Zoo. It’s all your friends from the standard model of physics, and more! My favourite has to be the incredibly devious looking tachyon:

Time for a new table?

The periodic table has been in use for nearly 150 years, ever since its invention by Dmitri Mendeleev in 1869. Is it time for chemists to rearrange the furniture and bring in something a little more…round? Mohd Abubakr of Microsoft India seems to think so, and presents his own version:

The circular periodic table

One advantage is that the 7 rings represent the 7 electron shells of an atom. Another is that the elements get larger as you move out from the center. As the Physics arXiv blog points out though, it’s hard to read a circular table without rotating it – which unlike the regular table, doesn’t make for a great wall poster!

Obama, the astronomical President

Colin provided me with this final roundup item, so I’ll hand over to him:

What a week it has been for President Barack Obama. On Friday morning he was woken up at 6am by his aides who broke the news that he had (rather controversially) won this year’s Nobel Peace Prize.

With such news his diary commitments on Wednesday evening have largely been overlooked. Yet on that evening he and 150 local school children took to the South Lawn for Astronomy Night at The Whitehouse with guests including the second man on the Moon, Buzz Aldrin.

But what really captured the imagination was his opening speech. It was a rallying cry for a change in education, an eloquent rendition of just why science matters and a piece of science communication par excellence. Take a look for yourself:

The Nobel Prize in Physiology or Medicine

This prize was split equally between Elizabeth Blackburn, Carol Greider and Jack Szostak for their work in the 1980s on telomeres, the “protective caps” on the ends of the chromosomes that contain our genetic information.

These caps allow chromosomes to be copied end-to-end during cell division by protecting them against degradation. Telomeres are also a key part of the ageing process; as the telomeres shorten, cells begin to age. Maintaining telomeres through use of the enzyme that forms them (telomerase) could lead to new medical treatments.

The Nobel Prize in Physics

One half of this prize was awarded to Charles Kao for research in 1966 that lead to the invention of fibre optic cables. Kao figured out how to transmit light signals over 100 kilometers, allowing high-speed transfer of data around the world. Without his work you wouldn’t be reading this, because the internet would be impossible.

The other half was shared by Willard Boyle and George Smith for the invention of the charged-couple device (CCD) in 1969. Found in everything from digital cameras to space probes, the CCD uses the photoelectric effect (for the theorising of which Albert Einstein received a Nobel Prize in 1921) to convert light in to electric signals. As well as ushering in the era of digital photography, CCDs are used extensively throughout the whole of scientific research.

The Nobel Prize in Chemistry

Finally, this prize was also split equally, between Venkatraman Ramakrishnan, Thomas Steitz, and Ada Yonath for their work on understanding the structure of the ribosome.

Ribosomes act as a kind of molecular interrupter, translating a DNA sequence in to the proteins that make up life. Using X-ray crystallography, the trio mapped the structure of the ribosome to generate 3D models of it in action. These are used to study the effects of antibiotics on bacterial ribosomes, and thus create new treatments for disease.