Archive for June, 2015

Sailing to Byzantium

Posted in Poetry with tags , , , on June 7, 2015 by telescoper

 I
That is no country for old men. The young
In one another’s arms, birds in the trees
—Those dying generations—at their song,
The salmon-falls, the mackerel-crowded seas,
Fish, flesh, or fowl commend all summer long
Whatever is begotten, born, and dies.
Caught in that sensual music all neglect
Monuments of unaging intellect. 

II
An aged man is but a paltry thing,
A tattered coat upon a stick, unless
Soul clap its hands and sing, and louder sing
For every tatter in its mortal dress,
Nor is there singing school but studying
Monuments of its own magnificence;
And therefore I have sailed the seas and come
To the holy city of Byzantium. 

III
O sages standing in God’s holy fire
As in the gold mosaic of a wall,
Come from the holy fire, perne in a gyre,
And be the singing-masters of my soul.
Consume my heart away; sick with desire
And fastened to a dying animal
It knows not what it is; and gather me
Into the artifice of eternity. 

IV
Once out of nature I shall never take
My bodily form from any natural thing,
But such a form as Grecian goldsmiths make
Of hammered gold and gold enamelling
To keep a drowsy Emperor awake;
Or set upon a golden bough to sing
To lords and ladies of Byzantium
Of what is past, or passing, or to come.

by William Butler Yeats (1865-1939)

The Frontier of Computing – Quantum Technology

Posted in The Universe and Stuff with tags , , , on June 6, 2015 by telescoper

I came across this video last week and thought I would share it here. It was made by a group students and is called The Frontier of Computing – Quantum Technology. It features Prof. Winfried (“Winni”) Hensinger of the Department of Physics & Astronomy at the University of Sussex.

This gives me a chance to plug once more the unique Frontiers of Quantum Technology MSc Course at the University of Sussex, which seems to be attracting considerable interest this year!

Hannah and her Sweets: that EdExcel Examination Question…

Posted in Education with tags , , on June 5, 2015 by telescoper

You may or may not know that yesterday there was a bit of a Twitterstorm of students complaining about an “unfairly difficult” examination question on the GCSE Mathematics paper set by EdExcel.

This is the question:

There are n sweets in a bag. Six of the sweets are orange. The rest of the sweets are yellow.

Hannah takes a sweet from the bag. She eats the sweet. Hannah then takes at random another sweet from the bag. She eats the sweet.

The probability that Hannah eats two orange sweets is 1/3. Show that n²-n-90=0.

Not sure what all the fuss is about. Seems very straightforward. The question tells you that 6/n × 5/(n-1)=1/3 whence the equation follows by a trivial rearrangement. In fact I’m a little surprised the question didn’t go on to ask the students to solve the quadratic equation n²-n-90=0 to show that n=10…

I don’t really know what is on the GCSE Mathematics syllabus these days. In fact I never did GCSE Mathematics, I did O-level Mathematics which was quite a different thing. You can see the papers I took – way back in 1979 – here.

 

Thirty years a graduate..

Posted in Biographical, Film with tags , , , , on June 4, 2015 by telescoper

Today got off to a bad start when Radio 3 swtiched on shortly after 6am with a Concerto for Two Harpsichords. Since even one harpsichord is one more harpsichord than I can tolerate, I switched it off immediately and went back to sleep. When I finally got going I arrived at my usual bus stop (at Old Steine) to find it taped off and out of service. The wreckage of a burnt-out bus at the stop provided the obvious explanation. I therefore had to walk all the way up to St Peter’s Church to get a bus up to campus. I got here just in time to have a quick coffee and head off to an two-hour long Joint Planning Meeting with the School of Engineering and Informatics.

All things considered this wasn’t the best start to a birthday I’ve ever had, but at least I now have time for a celebratory cup of tea from my birthday mug.

Mug

Thank you to Miss Lemon for the lovely present – as regular readers of this blog (Sid and Doris Bonkers) will know – the Maltese Falcon is my favourite film.

Anyway, I only have a brief respite because this is a very busy part of the academic year. Next week we enter the time of the Final examination boards where we have to classify the degrees of graduating students. While I was lying in bed recovering from harpsichord-induced schock this morning I realised exactly 30 years ago I had just finished my own final examinations. In those days they were very intense, six three-hour papers in just three days for most students. I got off lightly because I did a theory project which I could substitute for one paper. It was still quite exhausting though. Can that really be thirty years ago?

I remember the grand plans I had to celebrate the end of my finals, especially since they coincided to closely with my birthday. When the time came, however, I was totally exhausted and just ended up having a few beers and crashing out. That’s probably what’s going to happen today too…

Anyway, must get on. Time to prepare for this afternoon’s meeting of the School of Mathematical and Physical Sciences Executive Committee. Another two hours. What a way to spend a birthday…

Higher Energy Physics at the LHC

Posted in The Universe and Stuff with tags , , , , on June 3, 2015 by telescoper

I’ve been busy with meetings most of the day but couldn’t resist a quick post to catch up on the exciting events at CERN. Today is the day that the Large Hadron Collider was due to start operating at its highest collision energies so far, 13 TeV. It was quite a nervous morning, and the first attempt to ramp up to this energy failed.

Here was the scene this morning in the control room of the ATLAS experiment.

Control Room

This kind of photograph always reminds me of the inside of a betting shop..

However, it didn’t take long to succeed, at which point much celebration ensued. This story has a strong local connection here in the Department of Physics & Astronomy at the University of Sussex. The run coordinator for the ATLAS experiment on the Large Hadron Collider is Dr Alessandro Cerri of Sussex  and he has figured prominently in today’s action. Here he is, having a glass of bubbly (purely medicinal, I’m assured) when they first achieved stable beams at the new collision scale:

Cerri

He also produced this nice quote which I took from the ATLAS Twitter feed.

LHC_Restart

It is hoped that operating at 13 TeV will allow the various detectors on the Large Hadron Collider to probe the possible existence of supersysmmetric particles which have so far defied detection. On the other hand if it doesn’t find them it will cause a lot of theorists to go back to the drawing board. Incidentally I’ve been going around asking particle physicists how much they’d be willing to bet on the LHC finding evidence of supersymmetry and I can’t get any of them to make a wager with me. Any one willing to rise to the challenge please do so via the Comments Box.

Of course we all know that the main reason for increasing the LHC’s energy is not to detect supersymmetric particles, or indeed any other evidence of physics beyond the standard model that had previous been accessible. It’s to generate papers with even longer author lists

Big Science is not the Problem – it’s Top-Down Management of Research

Posted in Finance, Science Politics, The Universe and Stuff with tags , , , , on June 2, 2015 by telescoper

I’m very late to this because I was away at the weekend, but I couldn’t resist making a comment on a piece that appeared in the Grauniad last week entitled How can we stop big science hovering up all the research funding? That piece argues for a new system of allocating research funding to avoid all the available cash being swallowed by a few big projects. This is an argument that’s been rehearsed many times before in the context of physics and astronomy, the costs of the UK contribution to facilities such as CERN (home of the Large Hadron Collider) and the European Southern Observatory being major parts of the budget of the Science and Technology Facilities Council that often threaten to squeeze the funds available for “exploiting” these facilities – in other words for doing science. What’s different about the Guardian article however is that it focusses on genomics, which has only recently threatened to become a Big Science.

Anyway, Jon Butterworth has responded with a nice piece of his own (also in the Guardian) with which I agree quite strongly. I would however like to make a couple of comments.

First of all, I think there are two different usages of the phrase “Big Science” and we should be careful not to conflate them. The first, which particularly applies in astronomy and particle physics, is that the only way to do research in these subjects is with enormous and generally very expensive pieces of kit. For this reason, and in order to share the cost in a reasonable manner, these fields tend to be dominated by large international collaborations. While it is indeed true that the Large Hadron Collider has cost a lot of money, that money has been spent by a large number of countries over a very long time. Moreover, particle physicists argued for that way of working and collectively made it a reality. The same thing happens in astronomy: the next generation of large telescopes are all transnational affairs.

The other side of the “Big Science” coin is quite a different thing. It relates to attempts to impose a top-down organization on science when that has nothing to do with the needs of the scientific research. In other words, making scientists in big research centres when it doesn’t need to be done like that. Here I am much more sceptical of the value. All the evidence from, e.g., the Research Excellence Framework is that there is a huge amount of top-class research going on in small groups here and there, much of it extremely innovative and imaginative. It’s very hard to justify concentrating everything in huge centres that are only Big because they’ve taken killed everything that’s Small, by concentrating resources to satisfy some management fixation rather than based on the quality of the research being done. I have seen far too many attempts by funding councils, especially the Engineering and Physical Sciences Research Council, to direct funding from the top down which, in most cases, is simply not the best way to deliver compelling science. Directed programmes rarely deliver exciting science, partly because the people directing them are not the people who actually know most about the field.

I am a fan of the first kind of Big Science, and not only for scientific reasons. I like the way it encourages us to think beyond the petty limitations of national politics, which is something that humanity desparately needs to get used to. But while Big Science can be good, forcing other science to work in Big institutes won’t necessarily make it better. In fact it could have the opposite effect, stifling the innovative approaches so often found in small groups. Small can be beautiful too.

Finally, I’d have to say that I found the Guardian article that started this piece of to be a bit mean-spirited. Scientists should be standing together not just to defend but to advance scientific research across all the disciplines rather than trying to set different kinds of researchers against each other. I feel the same way about funding the arts, actually. I’m all for more science funding, but don’t want to see the arts to be killed off to pay for it.

Gay Astronomers – At Last Some Data!

Posted in Biographical, LGBTQ+, Science Politics with tags , , , , , , on June 1, 2015 by telescoper

Some time ago I wrote a blog post entitled Where are all the LGBT Astrophysicists. I wrote that piece when I accidentally discovered that somebody had recently written a blog post (about Einstein’s Blackboard) which mentions me. I used to look after this famous relic when I was in Nottingham many years ago, you see.

There’s a sentence in that post that says

Professor Coles is one of the few out gay astrophysicists in the UK.

Well, it all depends by what you mean by “few” but at the time I wrote that  I thought there are more gay (or lesbian or bisexual or transgendered) astrophysicists out there than most people probably think. I know quite a large number personally- dozens in fact- most of whom are “out”. It’s a safe bet that there are many more who aren’t open about their sexuality too. However, it is probably the case that LGBT scientists are much less visible as such through their work than colleagues in the arts or humanities. Read two research papers, one written by a straight astrophysicist and one by an LGBT astrophysicist, and I very much doubt you could tell which is which. Read two pieces of literary criticism, however, and it’s much more likely you could determine the sexual orientation of the writer.

You might ask why it matters if an astrophysicist or astronomer is straight or gay? Surely what is important is whether they are good at their job? I agree with that, actually. When it comes to career development, sexual orientation should be as irrelevant as race or gender. The problem is that the lack of visibility of LGBT scientists – and this doesn’t just apply to astrophysics, but across all science disciplines – could deter young people from choosing science as a career in the first place.

Anyway, at last we have some evidence as to whether this might be the case. In 2014 the Royal Astronomical Society (of which I am a Fellow) carried out a demographic survey of its membership. This happens from time to time but this one was the first to include a question about sexual orientation. The Institute of Physics did a similar survey about Physics about a decade ago, but did not include sexual orientation among its question, so this is the first time I’ve seen any data about this from a systematic survey. The results are quite interesting. About 7% of UK respondents (from a total of around a thousand) refused to answer the sexual orientation question but, among those who did, 3% identified themselves as bisexual and 4% as gay men. Both these proportions are significantly higher than the figures for the general UK population reported by the Office of National Statistics. The fraction of respondents in the RAS Survey declaring themselves to be heterosexual was 84%, whereas the corresponding figure from the ONS Survey was 93.5%. The number of UK respondents in the RAS Survey identifying as lesbian was only 0.2%; the proportion of respondents identifying themselves as male was 77.5% versus 21.3% female, which accounts for only some of the difference between gay and lesbian proportions.

So, according to the survey, gay men are actually significantly over-represented in the Royal Astronomical Society compared to the general population. That confirms the statement I made earlier that there are more gay astronomers than you probably think.  It also shows that there is no evidence that gay men are deterred from becoming astronomers. In fact, it seems to be quite the opposite. It’s a different story when it comes to other demographics, however. The RAS membership is older, less ethnically diverse, and more male-dominated than the the general population, so there’s a lot of work to be done redressing the balance there.

On the other hand, next time the Royal Astronomical Society is looking to elect a President it will naturally want to find someone who is representative of its membership, which means an ageing white gay male. I rest my case.