#departmentofphysics — Public Fediverse posts

Maynooth Eclipse Weather Watch

As I mentioned last week, the Department of Physics at Maynooth University will be hosting an Eclipse Event, this week on Wednesday August 12th. This sold out very quickly so we expect a good turnout. In the last few days we have been featured prominently in articles in the Irish Times and The Journal and on the RTÉ website. Although it is officially full, there may be a few returns, so it is worth checking on the day to see if we can fit you in.

The viewing of the eclipse will of course depend on the weather, but we have talks lined up indoors and a pop-up planetarium so I hope people will turn up even if the weather isn’t great. I’ve been checking the forecast on the Met Éireann app quite regularly. As of last week it wasn’t very good, with cloud and rain likely but since then it has improved. In the light of my recent post that one can’t really trust Irish weather forecasts more than three days in advance, I thought it would be fun to track the forecast until the big event to see how stable it is.

Here are the summaries for yesterday (Saturday, when it only gave a prediction every three hours for Wednesday), and today (Sunday, where there is an hourly forecast). The peak of the (partial) eclipse is around 7pm (19.00 hours) in Maynooth.

As you can see, the Sunday forecast predicts the temperature on Wednesday to be rather high, with little chance of rain, though with more cloud than the Saturday forecast. I’ll update on Monday, Tuesday and Wednesday to see how it progresses…

Update: Wednesday 12th, 7.30am. As you can see from the above the forecast for the eclipse is quite good. There is quite a lot of rain out to the west, but it is tracking noreth-eastwards and most of it is forecast to miss Maynooth.

P.S. In the Irish language, “eclipse” can be either urú or éiclips. The former is interesting as it is also the name for a form of initial mutation that occurs certain grammatical situations in Irish, the change at the beginning of a word, where a new letter is placed in front of the original consonant, so that the new letter’s sound replaces (or “eclipses”) the old one.

Lá Saoire i mí Lúnasa

Today, Monday 3rd August 2026, being the first Monday in August, is a Bank Holiday in Ireland. This holiday was created by the Bank Holiday Act of 1871 when Ireland was under British rule. While the August Bank Holiday was subsequently moved to the end of August in England and Wales, it has remained at the start of August in Ireland. It has been a nice morning weather-wise, but in true Bank Holiday fashion we’re promised heavy rain later on, with a chance of thunderstorms.

As I mentioned on Saturday, the first day of August marks the old pagan festival of Lughnasadh, named after the God Lugh, on which is celebrated the beginning of the harvest season. This coincides with the English Lammas Day, one of many Christian festivals with pagan origins. Traditionally this is the start of the harvest season and is celebrated accordingly, with rites involving the first fruit and bread baked from flour obtained from the first corn. It is also one of the cross-quarter days, lying roughly half-way between the Summer Solstice and the Autumnal Equinox (in the Northern Hemisphere).

Two years ago at this time I was still on sabbatical. That seems like ages ago! When I resumed teaching, in September 2024, I had to teach two modules I’d never taught before: a fourth-year Mathematical physics course on Differential Equations and Complex Analysis and a second-year Engineering Mathematics course. I am doing both of these again so resumption of teaching in September won’t be as challenging, although I will be changing a few things in the light of last year’s experience. Lectures start on Monday 22nd September.

After I return to work tomorrow the next big item on the agenda is the repeat examination period, which starts on Wednesday August 5th. The first paper for which I have responsibility is on Friday 7th, but I won’t be able to get the scripts until Monday 10th so I have a bit of time to do other stuff before I start marking. I am not expecting many scripts, actually, so it shouldn’t be too onerous a task to get them done promptly.

Next week also sees the deadline for the dissertations for our MSc course. I have been supervising a student this year and will probably be asked to give comments on the final draft of his report. Then the MSc students have their presentations on Friday 14th August. They have all completed the taught component of the course so the only thing left to assess are these projects. Students will get their final results later this month, along with the resitting undergraduate students.

In between all this we have our Eclipse Event on August 12th. This sold out very quickly so we expect a good turnout. The event was advertised quite a bit in the local media, e.g. here. The viewing of the eclipse will of course depend on the weather, but we have talks lined up indoors and a pop-up planetarium so I hope people will turn up even if the weather isn’t great. Although it is officially full, there may be a few returns, so it is worth checking on the day to see if we can fit you in.

Anyway, after the repeat examinations and project assessments are done, the marks uploaded, and the Undergraduate and Postgraduate Examination Boards have done their work, the next job will be to prepare for the new intake of students. This year’s Leaving Certificate results will be announced on Friday 21st August, at which point we’ll see how many students (if any) we have studying Physics next academic year (which, if all goes to plan, will be my penultimate…)

The growth of light seed black holes in the early Universe

Meanwhile, back in the world of research, I see that Maynooth University has issued a news item about a new paper by colleagues in the Department of Physics, Daxal H. Mehta, John A. Regan and Lewis Prole. The story has also been picked up by the Irish media, e.g. here.

You may find the paper behind a paywall, as it is published in Nature Astronomy, in which case you will just have to make do with the abstract:

And here’s a pretty picture from one of the simulations used in the paper:

#blackHoles #DaxalMehta #DepartmentOfPhysics #JohnRegan #LewisProle #MaynoothUniversity

Back to Teaching and Coping with GenAI

Summer is well and truly over: it’s a chilly day in Maynooth; the Autumnal Equinox takes place tomorrow; and tomorrow I return to teaching at Maynooth University. So begins my antepenultimate academic year as a university teacher.

I’ve often remarked how the academic year at Maynooth is largely defined by the astronomical phenomena of the equinoxes and solstices. This year demonstrates this perfectly: Semester 1 lectures for undergraduates begin tomorrow (22nd September), the day of the Autumnal equinox; they end on Friday 19th December with the Winter Solstice on 21st. The half-term study break coincides with Samhain, a cross-quarter day. It’s all refreshingly pagan.

This time last year, having been away on sabbatical the year before, I was preparing to teach two new modules. I have those two again this year. The timetable for my Engineering Mathematics (EE206 Differential Equations and Transform Methods) module has not changed, so my first lectures on that (a double session) are not until Tuesday. I’m also doing MP469 Differential Equations and Complex Analysis for 4th Year Mathematical Physics students again, but the lecture times for that have changed. That is because, as a consequence of the merger of the Departments of Theoretical Physics and Experimental Physics to form a single Department of Physics, times have been coordinated as far as possible to ensure that Physics students can have flexibility in their choice of theoretical or experimental-based modules. The Engineering Mathematics module has not changed because the times for those lectures are such as to fit with the needs of the Department of Engineering, rather than Physics.

The upshot of all this is that my first lecture of the new term is for MP469, tomorrow afternoon at 2pm and my second is also MP469, at 11am on Tuesday. This means that I have three hours of lectures on Tuesdays this term, but at least that makes it possible to have a day without teaching (Wednesday).

You will notice that both the modules I am teaching this term are mathematical in nature. I have been concerned about the integrity of the coursework element of these modules in the light of improvements in Generative AI. Only a couple of years ago GenAI could not solve the sort of problems I set for homework, but now it generally can – especially for EE206. I don’t altogether object to people applying artificial intelligence to solve mathematical problems, but the issue is that it does make mistakes. Moreover, instead of saying “sorry I can’t solve that problem” it will generally present a superficially plausible but incorrect solution. Although students will probably use GenAI for problem-solving, I think it is important that they learn to do such problems themselves, otherwise they won’t know whether the solution coughed up by the algorithm is correct or not. That way lies disaster.

The only way to learn mathematics is by doing it. If students get GenAI to do the mathematics for them, then they won’t learn it. In the past we have given marks for coursework (usually 20% of the module mark) mainly to encourage students to do them. Students who don’t bother to do these exercises generally do badly in the final exam (80%).

For these reasons I am moving the assessment from weekly homework sheets – which could be tackled with AI – to supervised in-class tests for which students can use notes on paper, but not laptops or phones, just like they would in the final examination. I will of course give examples for the students to have a go at themselves, and I will give feedback on their attempts, but they will not contribute to the module score. Another advantage of this approach is that students won’t have to do so much work against deadlines outside of class.

Anyway, that’s the approach I am going to try. I’d be interested to hear what others are doing to deal with GenAI. The Comments Box is at your disposal.

#DepartmentOfPhysics #GenAI #generativeAI #mathematics #MaynoothUniversity

My first official day back at work after a year-long sabbatical coincides with the first official day of a new Department of Physics at Maynooth University:

I knew this was happening, of course, and it should have happened years ago. Having two separate Physics Departments at Maynooth was not just an oddity. It required the relatively small number of academic staff across the Departments to undertake a huge amount of duplication in teaching thereby wasting resources and increasing workloads. There are, therefore, potential benefits in this merger but they will take time to accrue. At the moment it only exists on paper, and staff in the two ex-Departments will have to work out what to do next in terms of coordinating teaching and research. In my opinion this all should have been planned and agreed before going ahead, but here we are and we just have to make the best of the situation presented to us by The Management.

For the time being the New Department is just the two Old Departments in a single wrapper. We were already located side-by-side in the same building, the Science Building so there are no large-scale relocations of staff, at least not yet. All existing courses remain the same as before, too. That’s just as well, really, as we start teaching in three weeks!

That’s not to say that nothing has changed. The number of postgraduate and postdoctoral researchers in the Department of Theoretical Physics has been growing and there was consequently a drastic shortage of office space. My return from sabbatical has involved me being granted an elevated status in the new Department: I’ve been moved upstairs out of the old Theoretical Physics Department to an office in the old Experimental Physics Department.

Here’s a question, though. My contract of employment says that I am employed in the Department of Theoretical Physics. Since that Department no longer exists, do I need a new contract or have I been made redundant?

P.S. I wrote this blog at home before going to the office as this blog remains banned on Maynooth University campus.

https://telescoper.blog/2024/09/02/a-new-department-of-physics/

#DepartmentOfExperimentalPhysics #DepartmentOfPhysics #DepartmentOfTheoreticalPhysics #MaynoothUniversity