Archive for August, 2019

Cardiff Pride!

Posted in Cardiff, LGBT with tags , on August 24, 2019 by telescoper

I got up early this morning to fly back to Cardiff in time for Cardiff Pride, this being the twentieth such event in Cardiff. I was a bit worried I wouldn’t make here before the start of the Parade but I did, with time to spare. St Mary’s Street was quite a sight with all the rainbow flags.

The parade gathered on North Road this year before it got moving and it extended all the way from the castle to the Royal Welsh College of Music and Drama:

This is the reflection in one of the windows of the RWCMD building..

Not being in the parade myself, when it got going I moved to St Mary Street to watch it go by. It took so long for the front to arrive I started to worry something had happened, but eventually it appeared..

I watched a while enjoying the colourful sights and fun sounds before walking to Pontcanna for lunch.

It’s a lovely warm and sunny day for the carnival and concerts that take place this afternoon and evening so I’m sure everyone there will have a great time!

Me? I’m obviously too old for that sort of thing but the least I can do is wish Cardiff Pride a very happy 20th birthday!


The Rise of Jofra Archer

Posted in Biographical, Cricket with tags , , , on August 23, 2019 by telescoper

With all the news yesterday I got a bit nostalgic and yesterday’s play in the 3rd Ashes Test at Headingley added another element to that. Three years ago this summer I left my post at Sussex University and moved back to Cardiff. I took a break from work of a month before taking up a part-time position at the Data Innovation Research Institute. During the break I took in some cricket, including (part of) the County Championship match between Glamorgan and Sussex at Sophia Gardens, which I watched with a friend who lives in Cardiff. In the Sussex team for that match was a young fast bowler called Jofra Archer.

It struck me then that although he was young and a bit inexperienced he was a natural fast bowler, tall and with a good high action that allowed him to take full advantage of his height and generate a lot of pace and bounce. He was a little wayward at times and a bit expensive but took four wickets in the Glamorgan first innings.

While I was watching the game I noticed a guy sitting in the same stand who seemed a bit nervous. Sometimes changing his seat at the end of each over, at one point sitting near us. During a break in the play we had a chat and it turned out that the nervous spectator was Jofra’s father. He said that he went to watch his son play whenever he could. Then we were lucky enough to chat to the man himself in between deliveries when he was fielding on the third man boundary.

Fast forward three years and the young man has come on tremendously is now a star Test bowler. He’s worked hard to add control to his natural pace and, bowling at speeds of up to 96 mph, he’s able to trouble the world’s best batsmen (including Steve Smith). Yesterday he took 6-45 against Australia and now looks set to be a regular in the England Test team for the foreseeable future (as long as he stays fit). I hope Mr Archer Senior was in the crowd. I bet he’s very proud!

Australia were all out yesterday for 179, which has raised England’s hopes of levelling the series. I think I’ll reserve judgement until I see how England bat on the Headingley pitch against Australia’s quicks. I have a feeling they’re going to struggle…

UPDATE: I don’t like to say I told you so but at lunch on Day 2 England are 54 for 6…
..and soon after lunch all out for 67 off 27 overs and 5 balls. Grim.

Moving On..

Posted in Biographical, Cardiff with tags , , , , on August 22, 2019 by telescoper

After attending my second Repeat Examination Board of the week (this one in the Department of Engineering) it’s now time to begin the task of moving the contents of my office into the new one I’ll be in as Head of Department. Roughly simultaneously, the current Head of Department, Jonivar Skullerud, will be moving his clobber from the Head of Department’s office into my current office. Some coordination may be necessary to avoid collisions and/or other confusion, but I’m confident of a successful outcome…

While I’m on the subject of moving to a new job, though in my case remaining at the same institution, this very afternoon my wonderful former colleague from the School of Mathematical and Physical Sciences at the University of Sussex, Dorothy Lamb, is having a leaving do. She will soon be moving to a position at the University of Birmingham (in the Midlands). I’m very sad that I couldn’t be there for her farewell party, but the least I can do is wish Dorothy (aka Miss Lemon) all the best in her new job, and hope that her move from Brighton to Birmingham, after (I think) 25 years, goes as smoothly and as free from stress as possible.

UPDATE: You can read Dorothy’s farewell edition of the MPS Newslettter here.

Dorothy isn’t the only former colleague to be moving on to pastures new. I heard this morning that Ian Harvey and Unai Lopez from the Data Innovation Research Institute at Cardiff University are leaving soon. Unai is taking up a Lectureship at the University of the Basque Country in Bilbao so Bon Voyage Unai!


A Problem of Dimensions

Posted in Cute Problems, Maynooth, The Universe and Stuff with tags , , , on August 21, 2019 by telescoper

We’ve more-or-less sorted out who will be teaching what next term in the Department of Theoretical Physics at Maynooth University next term (starting a month from now) and I’ll be taking over the Mathematical Physics module MP110, which is basically about Mechanics with a bit of of special relativity thrown in for fun. Being in the first semester of the first year, these is the first module in Theoretical Physics students get to take here at Maynooth so it’s quite a responsibility but I’m very much looking forward to it.

I am planning to start the lectures with some things about units and dimensional analysis. Thinking about this reminded me that I posted a dimensional analysis problem (too hard for first-year students) on here a while ago which seemed to pose a challenge so I thought I would post another here for your amusement.


The period P for an elliptical orbit of semi-major axis a of  a moon of mass m around a planet of mass M, depends only on the quantities  a, m, M and G (Newton’s Gravitational Constant).

(a). Using dimensional analysis only, determine as completely as possible the relationship between P and these four quantities.

(b). How would the period P compare with the period P′ of a system consisting of a moon of mass 2m orbiting a planet of mass 2M in an ellipse with the same semi-major axis a?

Please submit your efforts through the comments box below.


On The Launchpad!

Posted in Education, Maynooth with tags , , , , on August 21, 2019 by telescoper

As we are approaching the start of the next academic year I’ve spent a little bit of time today preparing for events taking place over the next few weeks. One of the things on the immediate horizon is Launchpad, which takes place from Thursday 5 September to Saturday 7 September 2019 on the Maynooth Campus.

Launchpad is the Maynooth University Access Programme (MAP) orientation designed to support and ease the transition to third level for students who are coming to Maynooth University through entry routes supported by MAP. These groups include under-represented school leavers, mature students, students with disabilities and members of the Irish Traveller community. Incoming students supported by MAP can get to know fellow first years, ask questions and find out advice from existing student ambassadors on how to navigate the University before starting a new course at Maynooth. I will be attending a panel Q&A discussion for Launchpad on 6th September, which I am looking forward to!

Here’s a little video about Launchpad, produced by Maynooth University, which includes some student voices as well as some nice views of the campus:

It’s worth mentioning one specific initiative related to mature students, namely the Certificate in Science, which is a programme for mature students who wish to undertake a foundation year in preparation for degree studies in Science or Engineering. In this one year full-time programme of study, students undertake modules on Mathematics, Engineering Science, Computer Science, Experimental Physics, Mathematical Physics, Biology and Chemistry. Students who do well can progress from this course into one of the science or engineering degree courses on offer at Maynooth.

The Myths of UK-Ireland Trade

Posted in Finance, Politics with tags , , , , on August 20, 2019 by telescoper

It is clear now that the UK Government’s strategy on Brexit is one of economic aggression towards Ireland.  Senior Brexiters seem to think that threatening to put up barriers to trade with the Republic will frighten it and the European Union into abandoning the rules of the single market and customs union.

As well as being morally repellent this strategy is also extremely stupid, as is based on a complete misconception of the state of trade between these two countries. For example, one prominent Leave campaigner and former Minister of State recently claimed that 90% of Ireland’s trade is with the UK. That may have been the case in the 1950s but it is certainly not the case now.

In fact, according to the latest figures, only about 11% of Ireland’s exports in goods go to the UK and this figure is falling rapidly. The largest export destination for Ireland within the EU is actually not the UK, but Belgium (11.65%) with Germany just behind on 8.56%. Overall the EU accounts for about 49% of Ireland’s exports; the largest other contribution is the United States on about 29%.

Contrary to popular myth, Ireland’s exports are not dominated by agriculture and food. By far the largest contribution is from chemicals and pharmaceutical products many of which go to Antwerp for onward distribution and/or further processing. This accounts for the large trade figure with Belgium.

Another fact worth mentioning is that while Ireland overall has a healthy trade surplus overall (it exports more than it imports; see above Figure), its trade balance with the United Kingdom is actually negative (i.e. the UK exports more to Ireland than it imports). In 2018, UK exports to Ireland were worth £38.3 billion; imports from Ireland were £21.9 billion, resulting in a trade surplus of £16.4 billion with Ireland. Ireland accounted for 6.0% of UK exports and 3.3% of all UK imports. Ireland was the UK’s 5th largest export market and the 9th largest source of imports. The UK has recorded a trade surplus with Ireland every year between 1999 and 2018.

Brexiters have frequently used the argument that, since the UK has a negative trade balance with the EU, the EU needs the UK more than the UK needs the EU. It’s a wrong argument, of course, but it’s interesting that the Brexiters don’t apply it to Ireland.

There’s no question that the `No Deal’ Brexit which I’ve regarded as inevitable from the outset will disrupt the Irish economy, or at least parts of it, and in the short term, but I agree with the Irish Times analysis from some time ago and a more recent article from the FT that it will cause far greater damage to the UK.

In the longer term, when the UK is out of the European Union I’m sure its trade surplus with Ireland will quickly disappear as Ireland finds alternative (and more trustworthy) trading partners. Irish businesses are already eliminating British companies out of their supply chains and it seems likely that if and when the hard Brexit arrives, Irish customers will be increasingly disinclined to buy British products.

The UK seems to be hoping that some sort of deal with Trump’s America will help it out of the economic hole it has dug for itself, but remember that the UK currently has a trade surplus with the USA. The Americans will be keen to eliminate that during any future trade negotiations.

The really important thing however is not the overall effect on the economy but on the problems it will cause for communities either side of the British border in Ireland. The recently-leaked documents from Operation Yellowhammer make it clear that the UK government `expects a return to a hard border in Ireland’. The implication of this is stark: the UK government is planning to renege on its obligations under the Good Friday Agreement, which is an international treaty.

If it goes ahead and does that, then it may be that the economic effects of leaving the single market and customs union are small potatoes compared to the price that will pay for becoming a rogue state. I can’t see the United States, with its approximately 40 million citizens of Irish descent, being keen to support a British government that is so obviously seeking to bully Ireland especially, as seems sadly likely, British actions spark a return to violence in the North.

A Reminiscence of Cricket

Posted in Cricket, Literature, Poetry with tags , , , , on August 19, 2019 by telescoper

W.G. Grace, photographed in 1902

Not a lot of people know that Sir Arthur Conan Doyle, the creator of Sherlock Holmes, was a keen amateur cricketer who played ten first-class matches (for the MCC). He was an occasional bowler who only took one wicket in a first-class game, that of W.G. Grace, which was such a momentous event for him that he wrote this poem about it:

Once in my heyday of cricket,
One day I shall ever recall!
I captured that glorious wicket,
The greatest, the grandest of all.

Before me he stands like a vision,
Bearded and burly and brown,
A smile of good humoured derision
As he waits for the first to come down.

A statue from Thebes or from Knossos,
A Hercules shrouded in white,
Assyrian bull-like colossus,
He stands in his might.

With the beard of a Goth or a Vandal,
His bat hanging ready and free,
His great hairy hands on the handle,
And his menacing eyes upon me.

And I – I had tricks for the rabbits,
The feeble of mind or eye,
I could see all the duffer’s bad habits
And where his ruin might lie.

The capture of such might elate one,
But it seemed like one horrible jest
That I should serve tosh to the great one,
Who had broken the hearts of the best.

Well, here goes! Good Lord, what a rotter!
Such a sitter as never was dreamt;
It was clay in the hands of the potter,
But he tapped it with quiet contempt.

The second was better – a leetle;
It was low, but was nearly long-hop;
As the housemaid comes down on the beetle
So down came the bat with a chop.

He was sizing me up with some wonder,
My broken-kneed action and ways;
I could see the grim menace from under
The striped peak that shaded his gaze.

The third was a gift or it looked it-
A foot off the wicket or so;
His huge figure swooped as he hooked it,
His great body swung to the blow.

Still when my dreams are night-marish,
I picture that terrible smite,
It was meant for a neighboring parish,
Or any place out of sight.

But – yes, there’s a but to the story –
The blade swished a trifle too low;
Oh wonder, and vision of glory!
It was up like a shaft from a bow.

Up, up like a towering game bird,
Up, up to a speck in the blue,
And then coming down like the same bird,
Dead straight on the line that it flew.

Good Lord, it was mine! Such a soarer
Would call for a safe pair of hands;
None safer than Derbyshire Storer,
And there, face uplifted, he stands

Wicket keep Storer, the knowing,
Wary and steady of nerve,
Watching it falling and growing
Marking the pace and curve.

I stood with my two eyes fixed on it,
Paralysed, helpless, inert;
There was ‘plunk’ as the gloves shut upon it,
And he cuddled it up to his shirt.

Out – beyond question or wrangle!
Homeward he lurched to his lunch!
His bat was tucked up at an angle,
His great shoulders curved to a hunch.

Walking he rumbled and grumbled,
Scolding himself and not me;
One glove was off, and he fumbled,
Twisting the other hand free

Did I give Storer the credit
The thanks he so splendidly earned?
It was mere empty talk if I said it,
For Grace had already returned.

by Sir Arthur Conan Doyle (1859-1930).