Showing posts with label Swan Hotel. Show all posts
Showing posts with label Swan Hotel. Show all posts

Monday, 19 January 2026

Health Drop-In at the Swan

 

There will be a drop-in session at the Swan on Thursday 22nd January from 3pm to 6pm, for anyone who's interested in what's going on in local health services.

They'll be talking about Better Together, the local mental health services, and temporary service changes, particularly to the Minor Injury Units, Ready to Go Home Units and Rehabilitation Units.

There'll be tea and coffee available, and staff will be able to chat. 

Sunday, 11 May 2025

Well-Being Assembly

 This was the third of the Citizen's Assemblies organised by Mike Eccles.

To open the proceedings, he gave us an update on what has been achieved so far.  

Hay is now part of the South Powys Food Loop.  Our part in that is to set up an online supermarket of local food, and to encourage local people to use it to buy their groceries as much as possible.

On the  energy front, three consultants are working with the group in Hay - one from CAT, one from a group in Leominster, and I didn't catch who the other one was.  Setting up our own energy company is complicated, so the target is to have it up and running by 2035.  So far they are at the stage of mapping suitable local energy generation sites and having talks with the landowners.

This Assembly was on Mental Well-Being, and apparently it's something that has never been tried before.  They are hoping that, if it is successful, a similar model can be rolled out across Wales, via the library services.

The slogan of the Assembly was "It's OK not to feel OK, but it's not OK to not talk about it."

The idea is that Hay as a community should be able to identify people who are struggling with anxiety or loneliness or low level depression, and give assistance before it gets bad enough to involve the NHS.  NHS services have seen serious cuts in recent years, so even if someone is ill enough to need medical help, they can be a long time on a waiting list before they get it. 

As part of the discussion process, they are trialing some new software to record and analyse the conversations on each table which is AI assisted.  My comment was that AI is Evil - but this seems to be one of the more ethical uses of the technology, as it is not being trained on copyright material stolen from the authors, but just looking at the conversations in the room.

So the question we were considering was: How can we catch people before they need medical help?  How can we create a supportive community?

Before we started the discussions, we were shown a short film from Cambridge, interviewing schoolchildren and mothers who were suffering from climate anxiety - the worry about how the climate is changing and how it will affect the children who are growing up now.  One lady being interviewed said that, if people aren't worried, there must be something wrong with them - there's a lot to be worried about!  Everyone involved seemed to think that doing something practical helped a lot, even if it's only something small and local.

Then we had a short speech from Marie Brousseau-Navarro, who is the Deputy Commissioner and Director for Health in the Future Generations Commission for Wales.  This body ensures that decisions taken in the Senedd take into account the consequences for people in the future - more long term thinking than is usually the case in politics.  They produce a report every five years assessing how well the Senedd is doing.  Mike met Marie at Hay Festival, and she was so interested in what he was doing that she wanted to come along and see the Assembly in action. 

On our table we had a mix of people who are long term residents of Hay, who know the history of what has been done before, and some newcomers, which was useful because we could compare notes on how easy it was to find out what was going on in Hay and how easy (or not) it was to access groups of fellow residents with similar interests.  There's a lot going on in Hay, and that's one way to help people who feel isolated, if there is an easy way of finding out where those groups are.

During the coffee break, the lady who was filming the event set up her camera in another room to do interviews with volunteers.  I went along because no-one else on the table felt brave enough to do it!

It was mildly terrifying, but I think I made sense, and the camera lady said I'd given her some useful content.

The last part of the process was for a person from each table to stand up and share what had come out of the discussions - each table had a note taker using post-it notes, and a moderator to keep the discussion on track and make sure everyone was heard.

Just about everyone agreed that what Hay needs is a central hub where people can go and meet and find out what's going on.  At the moment the Library has this role - but Hay used to have a proper community centre, and that's really what's needed again.  (there is a long, long history of Hay trying to get a new community centre which I will not repeat here).

Several tables also suggested that it would be a good idea to give some sort of training to people in the community so they could recognise people who were struggling and offer support.

One table suggested making Hay a Town of Well-Being, and our table suggested a group at the Thursday market called something like Happy in Hay that could share information and lend a friendly ear.  (the British Legion has a very good Tea and Chat session regularly, but not everyone wants to go into the British Legion).

There was some worry about the younger people growing up in the community, and the need for inter-generational activities was stressed, as well as the suggestion that there should be a Young People's Assembly so that they could decide for themselves what they needed.

There was also mention of the perennial problem in Hay of groups needing to collaborate more - and publicise the fact that they exist better.  The Hay Community Facebook page is a useful resource, but not everyone is on Facebook, and there needs to be a way of communicating without being online as well.

Finally, there was an emphasis on the benefits of nature - getting out walking, working with farmers to improve local biodiversity, and creating nature based projects.

When I went along to the Assembly, I wasn't sure what I'd be able to contribute, but it turned out to be a very useful session and I'm very glad I went.

Thursday, 24 April 2025

Wellbeing Forum

 Well, I'm physically and mentally back in Hay now, and this morning was market day.  I was getting all my usual treats - grapes for tomorrow morning when I watch Star Trek with a friend (we're just about to start season 2 of Star Trek Deep Space Nine), delicious cakes (pear and red berry) from Bernie, bread from Alex Gooch.

There were leaflets about the Well Being Assembly at the Swan on the Primrose Farm stall and the stall next to it, which was for a fasting retreat in Craswell.  The lady at that stall said she wanted to meet the locals in Hay, and the best way to do that was to come to the market - but Craswell is a bit too close to Hay for anyone living here to want to go there for a holiday!

I also saw Mike, the organiser of the Well Being Assembly, going round with leaflets (I already have my ticket).  He's at the nervous stage of wondering whether anyone will turn up, though the previous two Assemblies were packed out.

Help make Mike less nervous by booking a free ticket now!   

https://hayresilience.org/ is the website to go to.  The Assembly takes place on Saturday 10th May at the Swan from 1.30pm (to start at 2pm) until 5pm, and the tickets are free.  (Tickets are needed in case there are more people interested in going than there are seats in the function room).

Monday, 14 April 2025

Well Being Assembly

 This is the third of the meetings to discuss the Hay Community Resilience Initiative.  Previous meetings have been focussed on local food and local energy production - now it's the turn of Mental Health.

The keynote speaker at the meeting will be the Deputy Commissioner for Future Generations for Wales, Marie Broussau-Navarro.

Part of the discussion will be about defining what we mean by mental health and well-being, and then trying to work out what we can do as a community to improve people's mental health and well being.

Questions that the Assembly will be asking include how we, as a community, can catch people suffering from anxiety or mild depression before they need medical help, and how can we build a supportive community?

Tickets are free, but limited by the size of the room at the Swan, and the meeting will be held on Saturday 10th May from 2pm to 5pm.

The Food Assembly was held last year, and the ideas put forward then have evolved - now the Hay group is working closely with Bwyd Powys Food, which is developing a South Powys Food Loop, inspired by a scheme that is already running in the South East of England.  So Hay would have a Hub linked to that Loop of local food producers, to get the food to local consumers.

Monday, 20 January 2025

Hay Energy Assembly Part 2

 There was also a speaker from Llangattock Green Valleys, near Crickhowell, Simon Walter.  Now, I have a vested insterest in them, because I am a share holder.  I signed up with them when they were doing a stall at a local event - I forget what it was now.  They've been in existance since 2009, and have several micro-hydro electricity generators in the hills around Llangattock and Crickhowell, as well as a beekeeping project, a woodland project and other things.  

I think it was Simon who warned that setting up a local community energy company was a long, slow process, and it had to be done one step at a time - so our first step is to get as many people involved and enthusiastic about the project as possible.  Green Valleys did it by holding events in the five communities that their area covered.  This will be easier in Hay, because the population is much more centralised.  

Another thing they did was to have maps where people could mark where they thought were suitable sites for e.g. solar panels, and where were the "cherished spots" where they didn't want to see anything to do with energy generation.

In the last 18 months or so they've been trying to take their energy production to the next level, and the Green Valleys volunteer who came along was very enthusiastic about it.  Peter had started with very little knowledge about renewable energy, but he's got up to speed very quickly over the time he's been volunteering.

We'd run out of time for the film on solar energy, so we went straight into the second part of the meeting, which was to discuss the question put to us by the organisers:

"In an ideal world what do we, the people in this room, think are the best ways for us to gain community support and participation in generating community owned renewable energy locally and in setting up Hay Energy?"

We all thought that the map was a brilliant idea, and our table was also keen on "love bombing" the community - getting as much local publicity as possible for the project.  

As well as a facilitator and a note taker for each table (we got through a lot of post it notes!) the Assembly was also trialing some new tech which recorded each table's conversations via mobile phone, so there was a record that could be looked at later.

Our table also discussed some of the more practical ideas for energy generation, and the way that there's really nothing new in having micro-hydro schemes - there were several watermills locally in Victorian times, and one of them, up Cusop Dingle, was used to supply electricity to Brynmelin in 1911!

At the end, each table presented its findings to the wider assembly, and the organisers will go away and collate those findings and see which were most popular.

In May, there will be another Assembly, this time on Mental Well-Being.  The date, May 10th, was chosen so that the Welsh Commissioner for Future Generations (I think it was) could be present.  Mike Eccles met her by chance at another meeting, and she said she'd be very keen to come along to see what we were doing in Hay.

Sunday, 19 January 2025

Hay Energy Assembly - Part One

 Last year, at about this time, there was a citizen's assembly in the Swan to talk about food security in the Hay area, and lots of good ideas came out of that.  There was a bit of a delay in implementing some of those ideas, simply because it was too much work for the volunteers who were trying to get it going, but they have now been able to access funding for help from paid staff, so now things are starting to happen behind the scenes.

So it was time for the second of the three planned assemblies - this time on Energy.  The idea is that Hay could set up its own energy company to generate renewable energy for the local area.

We were shown a short film from the Orkneys, where one island now runs entirely on renewable energy, which also brings in income to improve life for the islanders.  Wind power goes into the National Grid (there is a power line to the mainland) and is also used to store energy in the form of hydrogen, which heats the school.  They're planning to move into tidal power next.

Then we had a speaker from Ynni Teg Cyf, Jonathan Townend, who talked about community energy.  There are thirty or forty groups around Wales which are already generating energy for their local communities in a variety of ways, and the technology is improving so fast it's hard to keep up with it!

He did say that he was a bit worried on his way up to Hay from South Wales because of the lack of charging points for his electric car, but Hay has several charging points, so he would be able to get back home.  That's one of the infrastructure problems that needs to be addressed nationally.

His own group has a wind turbine and a solar array - though half of that blew away in recent gales and hasn't been replaced yet!  Even so, they have an annual turnover of about £400k - this is variable because of the variation in wind and solar output and the variable price of electricity wholesale.

As Hay is on the edge of a National Park, it is difficult to get planning permission for a wind turbine, but Hay is in a hilly area, and micro-hydro power is good in the smaller streams - though here there is the issue of getting extraction licenses for the water (even if it comes out and goes straight back in again!).

Solar panels are easy to set up, especially if a company can get enough people with suitable rooftops involved to install the panels - though there is the problem of rainy and cloudy days to consider.

Then there's the legal position that has to be considered - there are certain statutory requirements that have to be met, and there's the matter of how the company gets paid for the energy it is supplying.

There is help out there, though, from Community Energy Wales, the Welsh Government Energy Service, the Development Bank and Ynni Teg, who have a website at www.ynniteg.cymru.

Tuesday, 17 December 2024

Energy Assembly

 I was going to wait until after Christmas to post this, but tickets are going fast, and space at the Swan is limited.

Last year, there was a citizens' assembly at the Swan on the theme of Food Resilience.  Lots of good ideas were generated, and the organisers have spent the last 10 months working with Welsh governmental and non-governmental agencies to get support and funding.  So it may have looked as if nothing much was happening, but there was a lot going on behind the scenes to set things up.  In the course of this, they've joined 35 organisations working on the Climate Issue in Wales, on Food, Energy and Well-Being, which are the three most important areas they want to concentrate on in Hay.

There is now funding in place to employ a Project Co-ordinator, who will provide professional support.

One of the visible results of last January's meeting is the Tuesday evening food market at Hay Castle.  They also want to support local growers and farmers, and grow the market for local produce.

So now it's time to launch the second "pillar" of the initiative - the Energy Assembly.  The idea behind this is that Hay can generate at least some of its own energy for local consumption.  The aim is for Hay to become self-sufficient in clean energy, and the Assembly is a means of getting all the interested parties in one place to come to a consensus about how to achieve this.

The Energy pillar is a vital part of the plans for the future.  If Hay decides to go for its own Community Energy company, within five to seven years, there should be enough money to create a Wealth Fund from the profits.  So energy will be cheaper than the big companies, and there will also be money to fund locally produced food and other initiatives.

The meeting will be at the Swan Hotel on Saturday 18th January, between 2pm and 5pm.  Space is limited, so the event is ticketed, but the tickets are free.

There will be a third meeting, in May for the third pillar of the initiative, on Mental Well-Being.



Monday, 29 January 2024

Discussion Groups at the Food Assembly

 So, the question we were considering, in our groups around the tables, was this:

"How might we support Hay-on-Wye, as a community, to become as self-sufficient as possible in sustainably-grown local food?  Eventually producing enough to feed the town and its environs, much as in the 1950s and 1960s?"

Around our table, the farmer (Richard, I think?) had recently joined a group of farmers called the Hay-on-Wye Cluster - he farms near Painscastle.  The group mostly produce meat, but they are applying for a loan to buy a grain mill for locally produced grain to make local bread, which would also include something called the Social Loaf.  They don't have any members that grow much in the way of vegetables yet.  I asked if Primrose Farm was involved, but they haven't been approached yet.  There was some discussion of the possibility of Keiran at the greengrocers being able to co-ordinate vegetable growers, since he sources as much as he can locally, so knows who is doing what.

It was felt, around the table that it was important to involve the small shops in Hay like the greengrocers and Small Farms butchers - building on a framework that already exists.  Geraint Powell had said in his short speech that he sold meat direct to the public - but none of us around the table knew how to find out who was doing that or how to get involved as customers.

Allotments and market gardens were also felt to be very important.  John the retired farmer was very keen on the idea of getting as many local people as possible to grow their own food, whether on an allotment or as volunteers in a CSA or other model of market garden.  One thing that nobody wanted was for some outside group to come in and start a market garden - this was something that had to come from the grassroots of Hay as a community.  Someone mentioned that there are around 300 market gardens across Wales at the moment, but to have a good chance of feeding the majority of the population, something like 1,000 are needed.  Allotments and market gardens can produce much more food per acre than conventional fields with single crops.

We talked about the HADSCAL plans for the community hub around the doctors' surgery, and how their plans for allotments could start right away, without waiting for any of the other parts of their plan.

After about half an hour of discussion, each table was asked to provide three main points to the assembly.

Table 1 had been talking about vegetable boxes and Incredible Edible.

Table 2 suggested vending machines around Hay for fresh produce, and stressed the need for co-ordination between everyone who wanted to get involved.

Table 3 wanted more CSAs, but access to land is a problem, so their next point was to communicate with landowners to identify land that could be used.  They also wanted to see more education around food and cooking.

Table 4 wanted to map the assets that already exist, and find out what the demand is locally, as well as the needs of local people.  They were also keen on education in cooking and growing food.

Table 5 mentioned sourcing land, and education.

Table 6 wanted to see a co-ordination of information - networking, as well as upscaling from any small initiatives, and mentioned access to land, especially for allotments.  Planning law is also a problem for market gardens, because of the difficulty of getting permission for growers to live on their land while they are working it.

Table 7 also liked the idea of vending machines, finding ways to create more demand for local food, and support to growers.

Table 8 wanted to see children involved in cooking, which they said was no longer part of the National Curriculum, and to see more communal eating opportunities, like Bethesda Chapel's communal meals.

and Table 9 wanted information sharing and investment in infrastructure.

After that, we all filled in forms.  One was to indicate what we could do to help practically, and one was for the Welsh government as a requirement for them releasing the second half of their funding. The other sponsors of the event were Extinction Rebellion.

 I always have problems thinking about what to say to open ended questions, but for the question about getting more involved I mentioned that we needed a more frequent bus service, and for the question about what was stopping people from getting more involved, I said that people need enough time and energy to commit to something like this, and getting a Universal Basic Income scheme off the ground would help a lot!

Then there was time for a few questions from the floor, and Michael mapped out what would be happening next.  The points recorded by all the note-takers were going to be taken away and analysed, and they would be looking through the forms for practical help which would give an indication of what it was possible to do, given the people who were available to do it.

One lady from the audience invited people to contact her so that she could get something started about a vending machine.

So that's what the state of play is at the moment.

Sunday, 28 January 2024

Hay Food Assembly

 I arrived a little early at the Swan, to drop off my donation of biscuits to go with the free tea and coffee that was being provided.  Michael was giving some last minute direction to the facilitators who would be working with the rest of the people there during the afternoon.

Inside the function room, there were 9 or 10 round tables to sit at - I found a place just under the TV camera, at table 6, along with Janet from HOWLS, the Hay Library group, and a lady from Swansea who was acting as the note-taker for the table - she'd come up with some others because a group in Swansea wanted to try something similar, so she was seeing how it worked in practice.  There were also a couple of farmers on our table (one retired) and a lady who just wanted to see what was going on.  And Wayland, our facilitator, of course, who was there to keep the conversation going and stop anyone who was speaking over other participants.  (we were a very civilised group, so he didn't need to do much to keep us on track!).

There were a couple of tables at the back for anyone who didn't want to be filmed or photographed.

The idea for the forum came out of Hay Library CIC, and this is the first of three forums on different topics - the others are energy (can Hay do anything to generate our own energy?) and well-being (intervening with mental health problems before it gets bad enough for the NHS to become involved).

So this one was about food.  Can Hay get anywhere near self-sufficiency in food?  It used to be the case that local farmers fed local people, but now the supply chains can be very long indeed.  Even Kieran at the greengrocers has to travel to Birmingham to get some of his stock, though he tries to source as much as he can nearer to home, and some of the produce he buys in Birmingham will have come from much further away (we still can't grow bananas very well in the UK!)

The meeting started with a series of short films or speeches about the sort of things that are happening around the country to improve local access to fresh produce.  

First, the Mayor of South Yorkshire gave a quick introduction to how Citizen's Assemblies work - he organised one in his area to get an idea of what the local communities needed to be done.

Then there was a short film on Permaculture, which is a way of designing the landscape to provide food and shelter and all the other necessities of life in a sustainable way.

Katie Hardy spoke about Growing Local, the 20 acre site near Hereford where she's Head Grower.  This is a CSA - a Community Share Agriculture scheme where share holders pay in advance for food boxes, and the market garden grows the food.  They're also planning a cafe and a learning garden for schools.

The next film was for Incredible Edible, showing a scheme in Wrexham where volunteers plant fruit trees and vegetables in public spaces for anyone to harvest.  The council allowed them to plant on a piece of waste ground in one of the housing estates, on the basis that they couldn't make it any worse!

Then there was a film about LEAP - an organisation that provides loans for all sorts of growing and farming projects.  Funding can be a real problem for initiatives like this, but as well as LEAP there are grants available if you know where to apply for them.

Finally Geraint Powell, from Cabalva Farm, talked a bit about Regenerative Agriculture and what they are doing at Cabalva.

So, the audience now had an idea of what was possible - the next stage was to discuss it around the tables....


Saturday, 27 January 2024

Hay Food Resilience Meeting

 I've just come back from an afternoon at the Swan.  The function room was packed (and there was a waiting list for the free tickets, which is why I didn't publicise it here ahead of time), but it was a fascinating meeting, and I'll be writing more about it over the coming days.

Sunday, 1 October 2023

The Scandal of the UK Housing Market

 Last night I was invited to a book launch at the Swan.  I was asked not to publicise it in advance, because they could only cater for a limited number of people, but it was a fascinating evening.

The book in question is called The Scandal of the UK Housing Market, and is written by local author Henry Charles Pryor. In it he lays out the roots of the current housing crisis in the UK, and offers some possible solutions.  

I'm particularly interested in the subject, because I was directly affected by the housing crisis last year, when I was subject to a no fault eviction and found it incredibly difficult to find another place to live in Hay.  I was extremely lucky to have been offered the flat where I now live.

Nearly everyone I spoke to last night had stories to tell about the difficulties they had faced with the rental market, both local to Hay and in London, though the problems are widespread across the UK.

I haven't read the book in detail yet, but it's only short - 42 pages - beautifully put together by Seza Eccles under the imprint Silent Impressions.  The author was an estate agent for many years, and has also invented a cricket bowling machine which has been used by the England Cricket Team!

[Edited to add: the first printing is now sold out - a second printing will be available soon!]

Saturday, 22 July 2023

Arthur's Stone Visit

 I was invited to join a party of friends to do the guided tour of the Arthur's Stone dig yesterday.

We met at the Swan for lunch, in the garden.  One couple had driven up from East Sussex, and were meeting us on the way to visiting family in Presteigne, so they turned up a bit late.  We ate from the sandwich menu, and the portions were generous, and came with crisps, some of which ended up going to the blackbird who was hanging around watching us - who can't have been really hungry because we watched him wrestling with a huge worm when we arrived.  I had the pulled pork and mozzarella on ciabatta, which was delicious.  

Then we realised that nobody actually knew the route to the dig - I'd been before, but I only knew the bus route to get to the bottom of the hill, and Julia wanted to avoid driving up that hill if she could.  I was in the second car, following Julia, and we lost her at the Hardwicke turn into the Golden Valley, where she went straight on.  I guided the second car via the bus route, and we got to the dig a little bit late for the start of the tour.  Fortunately, Julia turned up shortly after  that, so we joined Amber from English Heritage, who was explaining what they found last year in the field below the monument before moving round to this year's trench.


The archaeologist in the picture is drawing a section of the dry stone wall in front of him, which was part of the monument.  Beyond him is the passageway into the main chamber of the tomb - the bit that looks like the Stone Table in Narnia (and CS Lewis did visit the site, so it had to have been his inspiration).

Another famous visitor I wasn't aware of was King Charles I, during the Civil War, when he used Arthur's Stone as a rallying point for his troops in the area - so it was a well-known landmark back then.  King Arthur, despite the name of the site, is not known to have been a visitor, and in any case he could only have visited it about 4,000 years after it was built.

The rest of the stones in the picture (I think I've got this right) are the remains of the collapse of the drystone wall, which was sealing off the passageway.  They think the passage way was quite a bit deeper than it now appears, and of course had capstones covering it, under an earth mound.  As it appears now, it would have been pretty difficult to get the remains of the dear departed into the main chamber, as anyone would have to crawl down the passageway.  However, the main stones are not being touched by excavation - the trench here is as close as the archaeologists are allowed to get.

One of the students on the dig had just completed emptying out this depression in the stones, which they think may have been a kist, or secondary burial within the mound, rather than depositing the remains in the main chamber.

Finds have been pretty rare, but they did find a piece of something that isn't quite obsidian, and which came from either Scotland or Northern Ireland, around the Giant's Causeway area, since it is volcanic rock in origin.  This is proof that people were moving around, and trading, over those distances.  They also found a rather nice flint arrowhead.

All the finds, from all the years of the digs, are being kept together, so they can be analysed at the end of the dig.

Across the road in the field there were two more trenches (one with a plastic pipe running through it!)  where the archaeologists were trying to find the extent of the monument.  There's a rise in the road as it passes the Stone, indicating that the monument may extend under the road, but they didn't know how far it might have gone.  Some similar sites are very big, so they were hoping to find an edge to it.

Further off in the field there was another, much deeper trench, cut through a depression in the field with parch marks, indicating that there was something underneath the grass.  This turned out to be small quarries of the same flat stones that were used for the drystone wall around the Stone.  There are small quarries all over the place locally, but this one was not marked on any maps, and there haven't been any finds yet to give a date.  However, any quarries from the Romans onward would have taken all the stone that was useable, whereas these quarries had a lot of stone left behind, as if they were choosing just the stones they could use for one project and rejecting the rest.

It was a fascinating tour, and Amber had a full schedule - earlier that afternoon she'd taken the Woolhope Group around (the Woolhope Group had a dig at the Stone in 1901, when regrettably vague notes were taken on their findings) and as we left, she was guiding another group around the site.

Then it was back to the Swan for tea and scones in the garden - a really enjoyable afternoon, with some lovely and interesting people!


Thursday, 23 July 2020

Afternoon Tea at the Swan

A friend came round with her laptop - she needed to get onto somebody's Wifi to send an important email, and her other friend who had been helping her had technical problems.
I had technical problems too - I couldn't work out how to get her laptop to talk to my Wifi Hub.
It occurred to me that cafes often provide free Wifi, and the Swan is now open so we headed out to the garden at the Swan.

On the way, we met another friend who had just been taking photos of Swan Well, where someone had left flowers.

The young man on reception recognised me from Stitch and Bitch meetings, and was incredibly helpful in getting the laptop to talk to the Wifi. We sent the email!
And we had English Breakfast tea with bara brith in the garden, which gradually filled up with people as we sat and chatted. The tables are well spaced out around the garden, which is a lovely place to sit.
Over by the wall, a rather cross little sparrow popped out of a bush and started chirping at people who were coming too close.
It was a lovely way to spend an afternoon, and the first time I've been out to eat since before the lockdown.

Tuesday, 25 February 2020

The Quest for Absolute Zero

I could just about keep up with the science in this talk at the Science Café! It had equations in it! And graphs!
For this session, we were in the bigger back room at the Swan, and the speaker was John Tyler, who had a background working with liquid oxygen.
So, as I vaguely remembered from my A level Chemistry days, the coldest temperature it's possible to be is -273.15 degrees Celcius, which is the same as 0 degrees Kelvin, and John's talk outlined the history of how scientists had attempted to get down to that temperature through history.
The first problem was how to measure temperature at all. The first accurate measurements were with the scale devised by Mr. Farenheit in the 18th century, followed by M. Celcius, who devised the scale that started at 0 degrees for the boiling point of water, and 100 degrees for the freezing point of water - until someone else decided that it would be more sensible to do it the other way round, as we do today. To take the measurements they needed mercury, and good enough glass blowers to make the glass tube to put the mercury in.
There are other methods of temperature measurement that are more useful at very low temperatures, such as measuring the resistivity of a platinum wire.
The theory was that, if the temperature was low enough, a gas would turn into a liquid, and eventually into a solid, as can be easily observed with water, becoming steam or ice according to the temperature. Another important variable is pressure - which is why it gets more difficult to boil water the higher up a mountain you are. So more pressure helps to turn your gas into a liquid.
This is where I learned of the "triple point", the one place in a graph of temperature against pressure where an element would be in all three states - solid, liquid and gas - at the same time! There's an international committee which fixes the official measurements, and which fixed the official temperature for Absolute Zero.

Steam engines were used to power the experiments, and at first the only object of the experiments was to see if it could be done - there was no practical application for liquid oxygen, hydrogen or nitrogen. There is now, of course - MRI scanners in hospitals use liquid helium as a coolant. Helium wasn't even known as an element when the experiments began, but in the middle of the nineteenth century there was an eclipse, centred in India, where astronomers used spectroscopy for the first time to detect the different gases in the corona of the sun as it went behind the moon. This gives coloured lines for each element, and there was a bright yellow one that had never been seen before. The name it was given, helium, comes from helios, Greek for the sun. Later, helium was detected on earth, coming from uranium ore, and the scientists who had been experimenting with making liquid hydrogen also wanted to try to make liquid helium. One of the foremost of these was Sir James Dewar, who gave demonstrations before audiences at the Royal Society. There is a picture of him in the 1890s making liquid hydrogen before an audience which included famous scientists like Marconi - without any safety precautions whatsoever. Apparently Sir James' two assistants each lost an eye in experiments that went wrong!
Meanwhile at the University of Leiden, a chap called Onnes had the resources and the inclination to make Leiden a world centre of cryogenic research, setting up a school to train glass blowers and instrument makers who were essential to build the equipment needed. By this stage they were using glass vacuum vessels as part of the method of lowering the temperature, first making liquid air, and using that to cool down hydrogen until the gas became liquid.
There was some discussion at the end of the talk about the feasibility of producing hydrogen powered cars in the volume necessary to replace petrol driven ones, and they weren't very optimistic that it was practical. Another member of the audience had also worked with cryogenics, at Llanwern, where they processed 5,000 tons of air a day into liquid oxygen and other elements! Argon is one of the trace elements in air that has a commercial use (welding, I think). And apparently the Dutch are experimenting with introducing hydrogen into the gas supply with some success.
The picture used at the beginning of the talk was of the Boomerang nebula, which is the coldest place known in nature, at about 1 degree Kelvin. Most of space is at about 2 degrees Kelvin. The coldest recorded temperature in nature on Earth was -81 degrees C.

The next talk will be on Monday March 23rd, when Brian Henderson will be talking about PCR, which I think stands for Polymerase Chain Reaction!

Sunday, 9 February 2020

Lots of Variety at Stitch and Bitch

The Stitch and Bitch group welcomed two new members this month, with a full house of regulars sitting around the big round table in the room to the side of the entrance in the Swan. I took my medieval lucet to make a loose cord that I'm knitting up with broom handle knitting needles into - well, at the moment it's just growing; it'll probably end up as a bedspread!
We found we had three people called Sarah (or Sara) around the table, one of whom was knitting pouches for baby joeys who had been orphaned in the bush fires in Australia. And we had two Kittys, one of whom was knitting fingerless mittens for refugees. One of the new ladies was finishing off a jumper. As ever, the conversation was wide ranging, taking in serious topics like home schooling to world domination via knitting groups! We even mentioned the recent Science Café talk on light bulbs as we tried to work out if Kitty's yarn was teal or green under the yellow lights of the chandelier, and the white light of somebody's phone.
The group meets from 6pm to around 8pm on the First Thursday of every month, and sometimes at other times, if enough people want to turn out and do it.

Thursday, 30 January 2020

Lightbulbs are Really Interesting

If I was asked to imagine a title for the most boring talk ever, I might possibly suggest a talk about lightbulbs.
This was the subject of this month's Science Café - and it was actually fascinating.
There was a lot of interest in the subject - we only just fitted into the room next to the front door of the Swan, and we may re-locate to the bigger room at the back if there's as much interest in future talks.
The speaker was Barry, who is an electrical engineer, and his knowledge was broad. He started off with some background information before we got anywhere near lightbulbs, on the visible spectrum of light, and the wavelengths to either side of what we can see - down into infra-red and radio waves, and up through ultraviolet to X-rays and gamma rays.
There's a mast in Droitwich that transmits the BBC World Service all around the world! Mobile phones are higher up the wave-lengths, and typically need to be within 3 to 5 miles of a mast, and 5G will mean a phone has to be even closer to a mast, because of all the extra information the signals are carrying. There was enough interest, and enough information, for a whole talk on mobile phones, but after a short digression we were back on the track of light bulbs.
Incandescent bulbs have a tungsten filament inside, and at the moment there's a fashion for these to look quite "retro" - like the new lights in Kilverts that hang from little pulleys.
Eventually, though, the filaments evaporate, and a lightbulb was passed around that had black marks on the inside of the bulb where this had happened.
To increase efficiency, halogen bulbs were invented - the bulb is filled with a halogen gas, (the halogen family of elements is Fluorine, Chlorine, Bromine, Iodine). These re-deposit the tungsten on the filament, thus extending its life. Halogen bulbs are used for all sorts of purposes because they are cheap and reliable. They are also good because they provide a broad spectrum of light. The incandescent bulbs and LEDs fool our eyes into thinking they are shining with a white light, but its usually really blue and yellow with gaps in the spectrum.
Neither of these types of lightbulb are very efficient at producing light - it's about 2% light and 98% heat, which is why you get lightbulbs to keep eggs and chicks warm in poultry farming. There was also some discussion of car headlights and the shape of the beams - and why LED headlights can be so blinding!
LEDs are a completely different form of light source. They are made from a very pure crystal that does not occur in nature, and this is where we get into semi-conductor territory. The machines that make these crystals are immensely expensive, and only about half a dozen companies in the world can make them - then sending the crystals on to China to be assembled into the actual lights. Each light, though, only needs a tiny crystal, which needs to be embedded in plastic with wires added to it for the electrical current. He passed a box around with examples, some of which were like dust particles. He also passed around a long strip with LED lights every inch or so along it - each being a cluster of red, green and blue lights, so when they were all on together they produced white light, and then each colour could be switched on individually to make red, green or blue light. I liked that bit - the colours were pretty.
The name stands for Light Emitting Diodes, and they are very energy efficient and very long lasting. However, Barry said that when councils started replacing their street lights with LEDs en masse, this was a mistake, because they were not quite as efficient as the manufacturers claimed - they are improving all the time, though.
One chap in the audience was particularly interested in the best light for use in photography - and such a light does not exist commercially, though Barry brought along one he had made himself. He also demonstrated, with some clever equipment, how lights switch themselves on and off too fast for the eye to see, because of Alternating Current in the electricity supply. However, we are subconsciously aware of it, which is why some people are sensitive to fluorescent lights and get headaches.
It was an excellent talk, and I really enjoyed it - and I learned a lot!

The next Science Café is on Monday 24th February, and is about Refrigeration and the Quest for Absolute Zero.

Tuesday, 21 January 2020

Science Cafe - Light and Cold for the New Year

The Science Café will be meeting on Monday 27th January at 7pm at the Swan. Admission is free. Barry Dawson will be Shining a Light on LEDs and talking about how to choose the best lightbulb - practical science!
And on Monday February 24th John Tyler will be talking about refrigeration and the quest to reach absolute zero.

Tuesday, 29 October 2019

Talking About Archaeology

I think it went very well!
The room at the Swan was full, and people asked interesting questions - so along the way we made tangents into subjects like why John Wayne developed cancer, pigs from Scotland being eaten at feasts at Stonehenge, and archaeology in Orkney, as well as the detection of art fakes and the age of the Turin Shroud - and how your teeth can show where you grew up.
Next month, the talk - on the last Monday of the month at 7pm - is on mitochondria.

Sunday, 27 October 2019

Science Cafe

Tomorrow night at 7pm, the talk at the Science Café at the Swan will be How Do We Know How Old it is?. It's a talk about dating techniques in archaeology, and I've been dusting off my college notes, because I've volunteered to give the talk!
So, I'll be talking about Carbon 14, Thermoluminescence, Dendrochronology, and more!

Thursday, 27 June 2019

Science Cafe - Deep Time

I saw the sign in the window of the Swan when I was on my way to Tai Chi at the Masonic Hall, and I thought it looked interesting.
Lawrence Matthews gave the talk to about nine of us in the room by the front door of the Swan (the same one we use for Stitch and Bitch).
The idea of the talk was to give us tools to envisage history and prehistory - and right back to the Big Bang 13.8 billion years ago - so that we could have a better idea of the order things happened in, and how far back we were going. After all, 13.8 billion years is just a number - it's very hard to imagine that length of time.
So Lawrence suggested that we think of one year as one millimetre. He had written out a timeline on a roll of paper 2 metres long - and that took us from Now to Caesar Augustus and the birth of Christ. 2m is about the height of an adult human, so we could think of Queen Victoria sitting on our noses, while Augustus was getting his toga wrapped round our feet.
So that's 2,000 years and 2 metres - what about dinosaurs? On this scale, there they are in France, wearing berets and waving baguettes around. Or the formation of the earth? At the same scale, that takes us to the deserts of Mesopotamia (or modern Iraq). And what about the Big Bang? Well, we're right round the earth in Australia for that (with kangaroos flying out of the way as the Big Bang explodes!). There was also a vivid image of Hansel and Gretel in a VW camper van (to remind us we're in Germany) where the 12 different branches of life split off - insects, vertebrates, and so on.
As you can see, explaining it in that way certainly worked for me!

The Science Café meets on the fourth Tuesday of the month (though they may be changing it to a Monday if that suits more people). They are having a break over the summer, but will be starting up again in September.