Archive for the Biographical Category

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Week Ending

Posted in Biographical, Covid-19, Maynooth on October 3, 2020 by telescoper

It’s the Saturday after a very tough week. At least I’ve got an excuse for lounging about at home because I’m waiting for a new bed to be delivered. Since I moved into my new house I’ve been sleeping in a single bed, in what will be the spare room, but when the bigger bed arrives I’ll be able to move into the main bedroom.

Last week was a tough one at work. Switching teaching online at short notice was only part of it. The building work that started late still isn’t finished so I’ve got more disruption from that to look forward to when I return to the Department on Monday.

I did at least get through the first week of online teaching. The newly installed Panopto system (which we used when I was in Cardiff) works very well, although the cameras are a bit limited. This system can webcast a lecture as well as recording it to be viewed later. I always assumed most students would watch the lectures after the event but as it turned out a majority actually viewed them live.

The sudden switch to online teaching was designed to restrict the number of students travelling to and from the University but nobody seems to have thought very much about those actually living on campus. In the case of Maynooth University that includes a sizeable fraction of first-year students whose first experience of university life is much poorer than in a normal year. I feel very sorry for this cohort but I suppose circumstances made this inevitable.

The official University line, as explained in an email (inevitably) sent out to Department Heads on Friday evening), is that teaching will be online at least until Study Week ( the week beginning 26th October). I think it’s overwhelmingly probable that we teach like this for the entire semester and there is a good chance that it will be the entire academic year. I think it would benefit us all, staff and students, if this decision were made now. There is no end in sight to Covid-19 and there is no point in pretending otherwise.

Update: the bed arrived this afternoon. It required “some self assembly”: though not on the scale of IKEA furniture that was quite hard work because the frame parts are very heavy. It’s done now though and I’m looking forward to sleeping in it tonight.

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The Eyes to the Left

Posted in Biographical, Brighton, Mental Health with tags , , , , , , on October 1, 2020 by telescoper

One of the things I managed to squeeze in during these last hectic days was a visit to the optician. I hadn’t had my eyes tested since I lived in Brighton, probably more than five years ago, which is a bit long to leave it for one of my advanced years. Inevitably the test revealed that I needed new spectacles, though curiously one eye – the left – has changed much more than the other since my last test. My prescription has corrections for both astigmatism and myopia (short-sightedness) but these are both well corrected by varifocals, the type of glasses I have worn for some time. My new specs took just a week to arrive and I find reading much more comfortable wearing them than I did with my old ones.

I remember the first time I had to wear varifocals I found it quite difficult, especially looking down through the bottom half of the lens (which is where you are assumed to be looking when reading) as they make it difficult to judge the distance to the ground (or, more dangerously, exactly where the next stair is….). I found after a day or two I was used to the varying focus and now I think nothing of it.

Because it means that your eyes focus differently on horizontal and vertical lines, and that’s exactly how text is constructed, uncorrected astigmatism makes it difficult to read words and numbers at a distance. With varifocals you have to look through the top half of the lens, which is the bit that corrects the astigmatism, and move your point of view until you find the place where the optical performance is best. I’ve often found myself in the audience of a lecture moving my head in odd ways to try to find the best angle to read what’s on the screen. I hope it’s not too disconcerting for the speaker when I do that!

The most interesting bit of my visit to the optician however was that I had an optical coherence tomography scan which generate a three-dimensional picture of the back of the eyeball. I’ve never seen one of those before. Here’s an example (not me):

This type of scan can be used to diagnose things like glaucoma and diabetic retinopathy, neither of which I have. In my case though it did reveal a significant level of unevenness in the surface at the back of both eyes and some signs of swelling of or near the optic nerves. The optician showed me the scan and pointed out these abnormalities, but said that it wasn’t anything too worry too much about as he thought it was historical rather than progressive. He said the only time he’d seen anything like that was in the cases of people who had in the past had some form of trauma to the head (which can cause increased pressure inside and so damage the back of the eyes).

I’ve blogged before about the long term effects on my mental health of the beating I experienced in Brighton over thirty years ago, but this was the first time I’ve seen such clear evidence of the physical damage that I presume was caused by that event. In extreme cases I experience periods of exaggeratedly heightened awareness of things moving in my peripheral vision that I can’t keep track of, accompanied by auditory and visual hallucinations. I’m not an expert but it seems likely to me that what the scan revealed may play a role in these episodes. It doesn’t explain why they seem to be triggered by stress, though, so there must be other factors.

Over the years a number of people have remarked that I often have the blinds closed in my office during the day, and that as well as that as well as being varifocals the lenses I wear in my glasses are reaction lenses (i.e. they go dark in bright light). Avoiding bright light in such ways was suggested by an optician some years ago, who suspected I might have some form of retinal damage but couldn’t see anything definitive with the technology available then. It seems he was right!

 

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Teaching Improvisation

Posted in Biographical, Education, Maynooth with tags , , , on September 29, 2020 by telescoper

The sudden switch of all our teaching online on Friday has necessitated a certain amount of improvisation. I had intended to do my introductory session on Mechanics and Special Relativity to first-year students as a kind of interactive workshop using the blackboard in Physics Hall. When we were told to move everything online I thought I’d just do yesterday’s session from my office which has quite a good blackboard and a setup I had already tested. Unfortunately however an office refurbishment project I was assured would be finished before the start of teaching but which has barely started meant that yesterday there was constant hammering and drilling in the Department. That made it impossible to do an online lecture (or do anything else) in my office. I knew there would be nobody in Physics Hall, though, so I did the lecture there to an empty room.

The camera provided in that room is fixed to a monitor at once side of the theatre and is therefore useless for capturing the blackboard, so I used my laptop camera plus a handy litter bin to raise it up. It wasn’t great but was better than nothing.

You might ask why I don’t do this from home. The answer to that is that I haven’t yet got an internet connection in the new house, so I can do online activities from there.

You might also ask why a refurbishment job, which could have been completed at any point during the summer when the building was empty, has only just started now we’ve started teaching again. If I had an answer I would tell you. I think the six people whose offices are currently unusable would like to know too, though at least they can work from home. It’s tough enough trying to keep everything together these days without this.

Fortunately today a colleague in the Department of Psychology found me a quiet place to work. It’s a small windowless cubicle normally used for experiments. At least it’s quiet. I think the next step will be a padded cell somewhere.

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Memories of My First Paper

Posted in Biographical, The Universe and Stuff with tags , on September 28, 2020 by telescoper

The death of John Barrow reminded me of a post I did some years ago about my first ever publication, which was published on 15th September 1986 while I was doing my DPhil at Sussex under John’s supervision. I’m mentioning
it hereby way of a postscript to yesterday’s piece.

Here is the front page:

mnras_paper

This was before the days of arXiv so there isn’t a copy on the preprint server, but you can access the whole article here on NASA/ADS.

All right. I know it’s a shitty little paper. But you have to start somewhere!

I’m particularly sad that, looking back, it reads as if I meant to be very critical of the Kaiser (1984) paper that inspired it. I still think that was a brilliant paper because it was based on a very original idea that proved to be enormously influential. The only point I was really making was that a full calculation of the size of the effect Nick Kaiser had correctly identified was actually quite hard, and his simple approximation was of limited quantitative usefulness. The idea was most definitely right, however.

I was just a year into my PhD  DPhil when this paper came out, and it wasn’t actually on what was meant to be the subject of my thesis work (which was the cosmic microwave background), although the material was related.

This paper provides two excellent illustrations of what a good supervisor John was. I was a bit stuck with the project that John had assigned me and eventually admitted to him that I was having problems getting anywhere. I thought he’d assume I was useless and suggest that someone else should supervise me. But no. He said he realised it was a hard problem and sometimes it’s good to think about something else when you’re stuck. So he asked me to look at cluster clustering for a bit. I told him what I found and he said I should write this up as a paper, which I did. Most importantly however the trick I used in simplifying the calculations in this paper turned out to be applicable to the first problem, hotspots in the cosmic microwave background, which led a success in the project and to my second paper. We were both delighted that everything turned out well with that original project.

My original draft of this first paper had John Barrow’s name on it, but he removed his name from the draft (as well as making a huge number of improvements to the text). At the time I assumed that he took his name off because he didn’t want to be associated with such an insignificant paper, but I later realized he was just being generous. It was very good for me to have a sole-author paper very early on. I’ve taken that lesson to heart and have never insisted – unlike some supervisors – in putting my name on my students’ work.

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R.I.P. John D Barrow (1952-2020)

Posted in Biographical, The Universe and Stuff with tags on September 27, 2020 by telescoper

My heart is filled with sorrow as I find myself having to pass on some very sad news. I have just heard of the death, yesterday, at the age of 67, of esteemed physicist, mathematician, author and polymath John Barrow. With his passing, one of cosmology’s brightest lights has gone out.

John Barrow was my thesis supervisor. Words can’t express how much I owe him for his advice and encouragement not only during my graduate studies but also throughout the 35 years that have elapsed since I started my career, as a research student at Sussex University.

John had an extraordinary mind that combined immense mathematical gifts with an encyclopedic knowledge of all kinds of literature and a wonderful flair for writing. He wrote dozens of books and a theatre play as well as hundreds of scientific articles. He was a whirlwind of ideas who had an uncanny knack of finding clever ways to crack previously unsolved problems. That he was happy to share these ideas with his students is a credit to his intellectual generosity. He inspired dozens of researchers early in their careers and continued to inspire them when they became not so young.

On a personal level, John was rather reserved and, despite his being a talented and confident public speaker, I always felt he was a rather shy person. He was a committed Christian and a regular churchgoer though he didn’t talk much about his private religious beliefs in the Department.

It is also interesting that, despite writing a number of superb popular books, giving public lectures and being a regular guest on radio programmes he steadfastly refused to appear on television. He just didn’t want to become a TV celebrity, though I suspect that if he did he would have been rather good at it.

Although I didn’t see as much of him in recent years as I would have liked, John was a member of the RAS Club which gave me the opportunity to see and talk to him fairly frequently. I always found him a very agreeable dining companion. We usually discussed sport on such occasions rather than science, actually. John was a talented middle-distance runner in his younger days and he gave me a lot of advice about training, etc, when I started running marathons. We also shared an interest in football – at which he was rather good, having had a trial for Chelsea Juniors – and we played together quite a few times in Sussex days. I remember him as a quality midfielder with a terrific engine, though he was not a natural goalscorer.

John also had a very dry and sometimes lugubrious sense of humour. I remember sending him a congratulatory email in 2003 when I found out he had been made a Fellow of the Royal Society. He replied thanking me but pointing out his joy at having been elected was tempered by the fact that the first official communication he got from Carlton House was a rather substantial bill for the subscription and a form on which to enter details to be used in an obituary.

It was through the RAS Club that I first heard, about a year ago that John was suffering from cancer. For a time he responded well to treatment but a few weeks ago I heard that his condition had deteriorated to the extent that only palliative care was possible. That news came as a shock as he always seemed so healthy and ageless that one imagined him to be indestructible. Today’s news was not unexpected but still distressing. The end came more quickly than we imagined but at least he was at home among his loved ones when he passed away.

I send heartfelt condolences to Elisabeth and the rest of John’s family, and friends and colleagues at Cambridge and elsewhere.

UPDATE: An obituary of John, written by Michael Rown-Robinson, is now available online on the Guardian website.

Rest in peace, Professor John D Barrow FRS (1952-2020).

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The Autumnal Equinox 2020

Posted in Biographical, Maynooth, The Universe and Stuff with tags , , on September 22, 2020 by telescoper

So here we are then. The Autumnal Equinox (in the Northern hemisphere) takes place this afternoon at 14.31 Irish Time (13.31 UT).

Though  the term `equinox’  refers a situation in which day and night are of equal length which implies that it’s a day rather than a specific time, the equinox is more accurately defined by a specific event when the plane defined by Earth’s equator passes through the centre of the Sun’s disk (or, if you prefer, when the centre of the Sun passes through the plane defined by Earth’s equator). Day and night are not necessarily exactly equal on the equinox, but they’re the closest they get. From now on days in the Northern hemisphere will be shorter than nights and they’ll get shorter still until the Winter Solstice.

For many people the autumnal equinox is taken to be the end of summer, though there is a saying around these parts that `Summer is Summer to Michaelmas Day’ (September 29th). Looking back over the posts I’ve written at this time of year since I started blogging in 2008, it’s noticeable how many times we’ve had a window of good weather around the autumnal equinox. In Wales such a warm spell in late September is called Haf Bach Mihangel – “the little summer of St Michael”.

Here’s a sample excerpt from the post I wrote in 2008 on this:

The weather is unsettling. It’s warm, but somehow the warmth doesn’t quite fill the air; somewhere inside it there’s a chill that reminds you that autumn is not far away.

I find this kind of weather a bit spooky because it always takes me back to the time when I left home to go to University, as thousands of fledgling students are about to do this year in their turn.

It has been quite warm here in Maynooth recently too. Last night I mowed the lawn in the evening sunshine, which may well be the last time I do that until spring. The weather turned a bit colder overnight and the weather forecast suggests the little summer may be over.

Anyway, this is Welcome Week in Maynooth and, barring any sudden changes of plan, we’re due to start teaching on Monday 28th September. I’ve been keeping an eye on the registrations of students as they come in as well as starting to get my notes, problem sheets, recordings and other teaching materials together. I have to say that hasn’t been helped by the decision to install a new fire alarm system in the Science Building this week. I had to go home early because of the constant din of the sounders being tested.

I have to admit I’m very apprehensive about the forthcoming semester and beyond. It’s impossible to predict where we will be by the next equinox in March, or even by the Solstice in December. Covid-19 cases are increasing and it doesn’t seem that anyone has a clue how to stop the `second wave’ surging through the population this autumn. The September equinox is often said to to be the start of Astronomical Autumn. This year more than ever it seems to herald that Winter is coming.

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Garden Birds

Posted in Biographical, Maynooth with tags , , , on September 20, 2020 by telescoper
A blue tit at the peanuts

The previous owner of my house left a bird feeder in the shed so I decided to see what sort of birds would come if I put it up. The feeder has quite a wide mesh so I bought a sack of peanuts, filled it up, and suspended from one of the trees.

Almost immediately a group of starlings arrived and took turns at pecking at the contents. I know that some starlings are resident all year round, but there is an annual influx of migratory birds around autumn. It seems a bit early for the continental starlings which usually start to turn up in October. Anyway, they seem ravenously hungry but are rather messy eaters and keep dropping bits on the ground.

The principal beneficiary of the starlings’ messiness is a robin, whose tactic is to wait underneath for peanuts from above. It does not seem keen to attempt the acrobatics needed to feed directly from the feeder. Sparrows do this too, but not when the robin is around as the robin chases them off; robins are feisty little critters. This one isn’t afraid to have a go at the much larger starlings if they descend to ground level.

There are at least two blue tits that visit the garden but they rarely get the chance to get at the peanuts before being scared off by yet more starlings. The picture above is an exception.

To help the smaller birds I bought a second feeder with a finer mesh that the starlings can’t get into this and filled it with mixed seed. The blue tits have this to themselves but obviously like the nuts too and will go to that feeder if there are no starlings.

Yesterday one of the many resident jackdaws tried the peanut feeder but failed in its mission as it was too big to hang on.

So far apart from those mentioned above I’ve also seen a chaffinch and a great tit but mainly it’s been blue tits and starlings. Of course I’m not in during the day so there might well be other species of garden visitor that I don’t see.

I’m thinking of getting a third feeder (for fat balls, etc) but I’m told that around here that will just mean a garden permanently full of rooks jackdaws and magpies. Any suggestions for alternative feeding mechanisms that might attract a wider variety of birdlife are welcome!

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Culture Night 2020

Posted in Biographical, Covid-19, Education, Maynooth, Music on September 19, 2020 by telescoper

Yesterday evening was Culture Night 2020. I’m afraid the only event I was able to enjoy was the concert from the National Concert Hall by the RTÉ National Symphony Orchestra under the direction of Gavin Maloney that consisted of:

Bartok: Romanian Folk Dances, BB 76

Mozart: Clarinet Concerto K.622 in A Major
John Finucane (clarinet)

Mendelssohn: Symphony No.4 Op.90 in A Major (Italian)

Here is the concert as it appeared on the live stream.

The bright and breezy Italian Symphony by Mendelssohn was a welcome tonic at the end of yet another exhausting and stressful week.

On Culture Night last year I was actually in the National Concert Hall after spending a very enjoyable afternoon wandering around Dublin. Yesterday however it was announced that after a surge in Covid-19 cases in the capital additional restrictions would be imposed there. What a difference a year makes! On Culture Night 2019 nobody had even heard of Covid-19.

Because many of our students come from the West Dublin area it has been decided to ‘escalate protective measures‘ at Maynooth University. This means, among other things, that the maximum class size for in-person lectures is 30. That means we have to revise our teaching plans yet again with just a week to go before the students arrive on campus, though I think for Theoretical Physics it really only changes the second-year modules. That is unless there are further restrictions, which is not unlikely.

Another exhausting and stressful week beckons!

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Moving Over

Posted in Biographical, Covid-19, Maynooth with tags , , on September 18, 2020 by telescoper

Although I moved into my new house in Maynooth nearly three weeks ago, it was only today that my former landlord came to collect the keys to the flat I was formerly living in. I am quite pleased that I no longer have the keys because having them made me feel some sort of responsibility for the place even though there is nothing of mine there. Handing over the keys is a form of closure, I suppose.

The fact that the landlord wasn’t in a hurry to complete the formalities gave me a bit of extra time to finish a couple of tasks that took longer than I’d expected.

The first was to close the electricity account for which task I needed a final reading from the electricity meter. One of the awkward things about the flat I was in was that the electricity meter isn’t in the flat but in a cupboard in the hallway along with the meters for the other three flats in the building. The cupboard belongs to the management company and they have the only keys. Whenever I needed a meter reading I therefore have to ask them to take one. I contacted them before moving out to do this, but they only sent me the reading this Monday so I only just got the account closed this week. I was a bit irritated that it took so long, but pleased in the end because the reading was substantially less than the `estimated’ reading used by the electricity company in the absence of any readings during the lockdown so I got a nice farewell refund.

Incidentally, the level of sloth of managing agents is by no means unusual in my experience. They always seem to manage to do as little as possible.

The other thing was the washing machine. The appliance supplied with the flat broke down at the start of the lockdown so I bought a new one just in time before all the stores closed and, with the landlord’s permission, I scrapped the old one. I always had the intention of taking the new one with me when I moved out. When the time came however it proved more difficult than I’d imagined.

In order to detach a washing machine from the water supply it is necessary to close a valve, otherwise there will be a flood. Unfortunately the valve was jammed and I could budge it. No worry, I thought, I’ll just turn off the cold water at the stopcock. Mostly this is found under the kitchen sink but when I looked for it I realized that whoever had installed the unit under the sink had boarded up the stopcock so it was inaccessible. I therefore had to take the back panel off the unit to get at the stopcock. When I had done that I found the stopcock wouldn’t budge. Not at first anyway. Eventually, with the application of a bit of elbow grease, I got it to turn. And so it came to pass that the washing machine was detached.

I then had to cart it to my new house. The only hard bit of that was lifting the thing onto the trolley I’d borrowed for the purpose. Washing machines are rather heavy, you see. After some struggling I managed to get going and trundled quite happily down the road to my new house and got it attached to the water there without any problem.

After having a cup of tea and a bit of a rest I thought it would be a good idea to go back to the flat and leave a note to explain that the cold water was turned off at the main and that it would be inadvisable to turn it on without sealing up the inlet pipe with a blank (or indeed another washing machine).

These tasks completed, and the keys returned, one part of the process of moving is now over. Phase Two will involve transporting the rest of my belongings from Cardiff, but that won’t be possible for a while as it looks like both Ireland and the UK are heading for more restrictions on movement due to Covid-19.

The one thing that has really struck me since moving is how much quieter my new neighbourhood is. The flat was on a main road so – apart from the full lockdown period in the spring – there was constant traffic noise. Although I got used to it, it did make it very hard to record video lectures etc. The new place is sufficiently far from large roads that the background noise is negligible, and it’s a detached house so there’s no noise from the neighbours either!

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Twelve Years in The Dark!

Posted in Biographical, The Universe and Stuff with tags on September 15, 2020 by telescoper

When I logged onto WordPress today I received a message that it was the 12th anniversary of my registration with them as a blogger, which is when I took my first step into the blogosphere; that was way back on 15th September 2008.

I actually wrote my first post on the day I registered but unfortunately I didn’t really know what I was doing on my first day at blogging – no change there, then – and I didn’t actually manage to figure out how to publish this earth-shattering piece. It was only after I’d written my second post that I realized that the first one wasn’t actually visible to the general public because I hadn’t pressed the right buttons, so the two appear in the wrong order in my archive.

If you’re interested in statistics then, as of 13.00 Irish Summer Time Today today, I have published 5197 blog posts posts and have received 4,369,422 hits altogether; I get an average of just under 1000 per day. This varies in a very erratic fashion from day to day, but there has been a bit of a downward trend over the last few years, presumably because I’m getting older and more boring. The largest number of hits I have received in a single day is 8,864 (at the peak of the BICEP2 controversy).

There have been 35,313 comments published on here and 2,672,823 rejected by the spam filters. The vast majority of the rejected comments were from bots, but a small number have been removed for various violations, usually for abuse of some kind. And, yes, I do get to decide what is published: it is my blog!

While I am on the subject of comments, I’ll just repeat here the policy stated on the home page of this blog:

Feel free to comment on any of the posts on this blog but comments may be moderated; anonymous comments and any considered by me to be abusive will not be accepted. I do not necessarily endorse, support, sanction, encourage, verify or agree with the opinions or statements of any information or other content in the comments on this site and do not in any way guarantee their accuracy or reliability.

It does mean a lot to me to know that there are people who find my ramblings on this `shitty wordpress blog’ interesting enough to look at, or even read, and sometimes even to come back for more, so I’d like to take this opportunity to send my best wishes to all those who follow this blog and especially those who take the trouble to comment on it in such interesting and unpredictable ways!

The last twelve years have been eventful, to say the least, both personally and professionally. I started blogging not long after I’d moved into my house in Pontcanna, Cardiff. Since then I moved to Sussex, then back to Cardiff, and now to Ireland. More importantly we’ve seen the discovery of the Higgs Boson and gravitational waves, both of which resulted in Nobel Prizes, as did the studies of high-redshift supernovae. The Planck mission mission was launched, did its stuff, and came to a conclusion in this time too. Science has moved forward, even if there are many things in this world that seem to be going backwards.

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