Tower of London Scaffold Tour

This morning I was lucky enough to be able to join a group of people getting a close-up view of some conservation work currently being undertaken on Bowyer Tower and adjacent walls.

Most visitors to the Tower of London probably don’t have a thought about the maintenance of the fabric that’s needed, not thinking about the deterioration caused by hundreds of years of London’s weather. A sizeable section on the north side was destroyed by a disastrous fire in the Armoury in 1841. The construction techniques used then, as well as repairs made during the 1960s have contributed to damage to the fabric of the building – in parts the walls have become very fragile indeed. When the work is complete it is planned for both the Flint and Bowyer Towers to be opened to the public for the first time, along with the adjoining wall walk.

View to Bowyer Tower

This is the view from Flint Tower along the walkway towards Bowyer Tower.

Stonework

The 1960s hard cement pointing has been causing problems and here it has been chopped out ready for repointing using more suitable materials.

Rubble centre and rusting iron strips

Behind the stone facing is a rubble centre to the walls. There are iron strips laid between some of the courses, for no apparent structural purpose, they are now rusting and damaging the structure of the walls.

Roof

The asphalt roof has been removed and will be replaced with lead.

Top of tower

The top of the tower surrounded by scaffolding. Note the C19 gargoyle and grotesque.

The group just about to descend from the top of the tower.

The group just about to descend from the top of the tower.

Masonry join

This area of the curtain wall clearly shows where the C19 rebuild meets the original medieval stonework (much of this part of the Tower of London was rebuilt following a disastrous fire in 1841).

Roman tiles

Here’s some of the original Roman wall reused in the medieval structure.

Lastly a few general pictures to show the scale of the job being done. There’s an awful lot of scaffolding here!

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Ice Age Art at the British Museum

ice age artThere are a lot of benefits derived from being a member of the Council for British Archaeology, but I think yesterday’s private view of Ice Age Art at the British Museum was, by itself, worth the membership fee. Space …….…….. room …………… loads of it. It’s spoilt me for the future: I shall hate (even more than previously) to find exhibitions are packed so tight they’re like tube trains in the rush hour (e.g. the BM), have people who stand in front of you when you’re looking at something (e.g. the RA), or have the labelling at navel level so only the front row of the scrum can read them (e.g. the V&A). At yesterday’s viewing it was more a case of being able to choose to look at something that had no one else near it.

None of the books about the art of this period prepared me for what is on display here.

The animals are so well-crafted, some anatomically exact, others also bringing our more of the essence of the animal. There are many horses (which are drawn so well it is possible to see whether they are cantering or galloping), bison, mammoths, and the rather famous swimming reindeer (this is better displayed here than when it was showing as one of the Puppet man100 Objects series). Seeing the actual artefact brings home how cleverly the chosen object was suited to the image, and how skilfully the object was manipulated to produce the final image. I am enjoying the accompanying book, the pictures will mean far more to me having seen the objects.

The puppet man was decidedly spooky. I can’t bring myself to imagine it as a doll except in a rather unpleasant nightmare or an episode of Doctor Who, nor can I imagine it being used to entertain small children; more likely a shaman enacting fearsome stories of the Otherworld with the light of a fire casting flickering shadows and frightening the willies out of the watchers. We’ll never know, it was 26000 years ago.

Pregnant womanOne item I found particularly moving. The limestone sculpture of a heavily pregnant woman which was found in a pit in a structure supported by mammoth bones and tusks; before it was buried it had been deliberately smashed with a stone hammer – following the death of the mother, her baby, or both in childbirth? It took a lot of force to smash this item, and possibly a lot of anger too. There is a video about the female figures by Jill Cook, the exhibition curator, on the BM website.

Some of the art is on objects with an everyday use; whether the items were adorned as a way of propitiating the gods or just for decoration (although I see no reason why it couldn’t be both) we’ll never know. The perforated batons made from antlers are a good example of this, and of man’s ingenuity. A multi-purpose tool, they have a hole which was probably used as a gauge to make a straight, well-balanced spear shaft, and thongs were probably threaded onto the baton to make it a spear thrower – experiments have shown that they are very efficient at both activities. They were nicely decorated, to boot.

And Ice Age animation anyone? There are some small discs which have an animal engraved on each side, in a different position, but so skilfully positioned that if the disc is spun the image appears to move, in a way similar to a flick book. A piece of bone has three horses in various positions (rather like an Edweard Muybridge) which can also be visualized as an animation.

Most of the objects were much smaller than I had expected, although as these people were leading a nomadic or seminomadic life, they would want their art to be portable. Some of it was designed to be hung around the neck, the holes are worn to show that they were suspended upside down, presumably so the wearer could look at them the right way up.

At the end there was a Q&A with Jill Cook, after which we were able to handle replicas of some of the objects; what struck me was how they were not only easy to handle, they also felt very comfortable to hold in the hand.

This really is a once in a lifetime chance to see most of these objects which have been assembled from a wide range of collections throughout Europe, some of them never having been seen in western Europe before. If you want to see the limestone pregnant woman after 2nd June you’ll be needing to go to St Petersburg. Or Brno to see the puppet man.

Ice Age Art transcended my expectations. In the afternoon I went to the Courtauld Gallery for Becoming Picasso: Paris 1901. His early work is interesting, but I couldn’t help thinking of his later works and how some of that Ice Age art out-Picassoed Picasso.

There is a cliché that the life of ‘savages’ was harsh, brutal and short. Certainly life on the permafrost was very harsh for these people, and survival must have been difficult; but they were not brutes, and they found the resources to support and maintain members of their communities who were producing pieces of art, which, to our way of thinking at least, had no practical use. They were, to a great degree, very like us, with similar needs and desires, but we mustn’t forget that they were also very, very different. The period covered is from 40,000 to 10,000 years ago, so their society would have changed dramatically over those 30,000 years, and the geographic spread across Eurasia is wide too. As far as they were concerned, this art may have been integral to the success, or failure, of their activities, and ultimately the survival of their social group. But we will never know.

(the run has been extended to 2nd June, so the date in the video is wrong)

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The Universe Within and Tiktaalik, Neil Shubin at the Royal Institution

Universe WithinPeople who have a great passion for a subject are often the best speakers on it, and Neil Shubin’s enthusiasm for his work was obvious as he spoke earlier this evening at the Royal Institution. He’s a palaeontologist who believes that seeing history helps us see the present, and that deep time is connected to all life and the present.

He explained how palaeontologists can select the right place to look for the fossil they are looking for, using just three criteria – rocks the right age, the right type, and that are at the surface. This took him to the Catskills and then to the Canadian Arctic where after six years of searching his team found Tiktaalik, which was just what they were looking for. He stressed that the discovery wasn’t fortuitous, but found using the tools and expertise of the palaeontologist.

We then moved to even deeper time, and how every cell, gene and organ in our body has been shaped through time by the dynamic universe we live in, from the first subatomic particles and light atoms being created soon after the Big Bang, through nuclear fusion in stars producing heavier nuclei, supernovae heavier elements still. In more recent times the earth’s processes have shaped evolution in dramatic ways. Each of the cells in our body has a clock controlling out diurnal cycle, and the genetic basis of this is common to all life. Ice ages have has an enormous effect on the evolution of life and changing climate produced the savannah grassland which led to our ancestors becoming bipedal.

The message he wanted us to come away with was that although cosmology has inexorably moved us from the centre of the Universe while Darwin removed us from the centre of creation, our place in the Universe is not diminished, science has connected us to it.

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Jim Al-Khalili, Quantum Life (how physics can revolutionise biology); and neeps

I’d thawed out the vegetarian haggis, made sure we had a neep and some tatties, and so was all ready for a Burns Night supper. Neep, incidentally, is the Scots for turnip or swede, and like many Scots words looks a bit like a slang word or contraction; this is, as it often is with Scots, wrong, næp being a fine Old English word deriving from the classical Latin napus, the first OED citation of turnip being 1539.

No haggis for me this evening, though, I had overlooked the coincidence of Burns Night and this month’s Friday Evening Discourse at the Royal Institution. Jim Al-Khalili’s talk on Quantum Life also coincides with quite a storm about the future of the Royal Institution.

Quantum biology is still quite a controversial subject – or to put it another way, a small and speculative field. But it does seem inconceivable to me that there can’t be some role for quantum mechanics in biology at the molecular level.

Jim Al-Khalili is always interesting and entertaining, I’ve seen him speak at the Ri before, and at the British Science Festival; much of my understanding (and perplexity) of quantum mechanics comes from his book Quantum: a Guide for the Perplexed, so I’ve been looking forward to his lecture for some time.

The talk started by discussing the migration of birds and how the European robin senses the angle of inclination of the Earth’s magnetic field, this may be due to a quantum mechanism in pairs of electrons in cryptochrome protein in the photoreceptor neurons in the back of the birds’ retina.

Moving on to the fact that living organisms are the only macroscopic objects whose dynamics are controlled by a single molecule, he suggested the possibility of DNA mutation being caused by proton tunnelling in the hydrogen bonds between base pairs.

We were also treated to a very clear explanation of the double-slit experiment (‘the central mystery of physics’), and were told that superposition + entanglement > Schrödinger’s cat.

There is a possibility that quantum mechanics may be involved in abiogenesis – how inorganic chemistry became biology. Jim is interested in the possibility that quantum tunnelling may be implicated (describing quantum tunnelling as being midway between mundane and outlandish in the quantum world).

Several years ago I read What is Life by Erwin Schrödinger, and I attended a talk at the Ri given by Roger Penrose in which he discussed the possibility of consciousness being due to a quantum process (Jim Al-Khalili doesn’t seem to rate this idea very highly). The idea of quantum biology has been around for fifty years, so it’s good to think it might be about to come of age.

There was a too short but interesting Q&A session, and then before the final round of applause Jim said that he had last given a Friday Evening Discourse in the Faraday Theatre nine years previously, and he was very much hoping that in another nine years he would be able to give another talk, in the very same place. #Savethe Ri.

The talk was filmed and will be available on the Ri Channel shortly, so if you weren’t at the Ri (the talk was a sell-out), you can still watch it.

P.S. I forgot to mention that, apart from being a sell-out, the audience for this talk was pleasingly varied, the youngest member was (I believe) nine years old, and there was a large number of younger adults present. A good gender mix, too, just a slight preponderance of males, but I would think only about 60:40 after a rough head-count. This is another good reason to save the Ri in its present building, it’s good at getting science to many different people in iconic surroundings.

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Sean Carroll on the Higgs, and the future of the Royal Institution

Particle at the End of the UniverseThe other night the Royal Institution had one of the best speakers I have seen there for a long time – Sean Carroll on the LHC and his new book, The Particle at the End of the Universe: the hunt for the Higgs and the discovery of a New World. We had a potted history of particle physics from Democritus through Newton to Laplace and then up to the present day, where we were told that the universe is fields; this is why the Higgs boson is so important. Reality is made of fields, particles are what we see; the quantum mechanics of fields gives us particles.

After a short flirt with quantum field theory we got a short history of our understanding of the nature of the atom, and an explanation of why the weak and strong nuclear forces act over such short distances (and the different reasons in each case).

We learned that the Higgs Field is nonzero, even in empty space; that most of the mass of ordinary matter doesn’t have anything to do with the Higgs Field, but instead comes from the protons and neutrons, and therefore from strong interactions; and that there is still measurable sexual discrimination in physics.

Next came an overview of the Large Hadron Collider and the people involved in the project, including the first mention I’ve heard of the archaeology involved (one of the experiments is on the site of a Roman town). The search for the Higgs was like looking for a piece of hay in a haystack, in a timescale involving the word zeptosecond, but they have found something very like it, a particle with a mass of ~126GeV.

Now the LHC is closing down for two years, but when it comes back it will be looking for evidence of supersymmetry. That’s exciting.

This is the stuff the Royal Institution is so good at. I was at one of their Christmas Lectures, this year on chemistry, probably the last one I will go to as my youngest daughter will be too old next year. Peter Wothers had an experiment using a Tesla coil which they had to film out of sequence, at the end, as in rehearsals it knocked out a lot of RI evacuationtheir equipment.  In June 2010 we were repeatedly evacuated from the lecture theatre as a rather (chemically) violent demonstration was setting off the fire alarm – initially with amused, latterly rather more irritated firemen.

Over the years at the Ri I have seen (among many others) Roger Penrose, Jeff Forshaw, Brian Greene, John Barrow, Martin Rees, Michio Kaku, Simon Schaffer, Frank Close, Alice Roberts, Brian Cox, Eric Laithwaite, Jim Al-Khalili, Manjit Kumar, Ben Miller, Terry Pratchett, Jon Butterworth and Steven Pinker, and in the coming months I’m looking forward to (among others) Jeff Forshaw again, Mark Miodownik, Neil Shubin, Jim Al-Khalili again, and Marcus Brigstocke. There are posts about some of them on this blog. Talks have ranged from asthma treatments to quantum mechanics, the science of music to the geopolitics of food, free will to the Antikythera mechanism, grimoires to infinity; I have extracted my own DNA at the Ri (in a non-sexual way); I have watched a play about Darwin, and one about lady researchers in genetics. They do rather a lot of work with schools. Although I wasn’t too sure about their having talks sponsored by the John Templeton Foundation. I have been to quite a few talks which I haven’t written about, as for various reasons, including pococurantism and lassitude, this blog has been in desuetude.

The Ri has been in Albemarle Street since 1799, and the lectures were so popular that the road became London’s first one-way street due to the large number of carriages arriving. They have been having severe financial difficulties over the last few years, after some apparently rather ill-advised redevelopments were completed just before the economic downturn. There has, apparently, been some improvement, but it would be a great shame if they have to move out of the building in which Faraday demonstrated the electric motor and Curie radiation. I hope they can stay.

[18/1/13] But see this Guardian article. It would appear that the Ri have put their building up for sale.

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Originally posted on Jane Austen's House Museum Blog:

Today is the anniversary of Jane Austen’s birth in 1775 at Steventon in Hampshire. Visitors to the museum will be asked to join in our celebrations, as usual, by being offered a warming cup of coffee and a seasonal mince pie. And exactly one year ago we began this blog. So, to celebrate, we are going to offer a very easy competition with a rather special prize.

The rules are very easy. If you leave a comment to this post, then you will be automatically entered into a draw to win a copy the Chawton Edition of Sense and Sensibility  which has been especially commissioned by the Museum to celebrate the 200th anniversary of the first publication of Sense and Sensibility in 2011.

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This edition includes a facsimile of the first edition of the book that was published by Thomas Egerton in 1811.  All three volumes are bound in one…

View original 191 more words

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The Royal Society Winton Prize for Science Books and Inept Guardian Competiton Question

The Royal Society Winton Prize for Science Books winner will be announced on the 26th November. The shortlist is:

The Hidden Reality: Parallel Universes and the Deep Laws of the Cosmos by Brian Greene; Moonwalking with Einstein: The Art and Science of Remembering Everythingby Joshua Foer; My Beautiful Genome by Lone Frank; The Informationby James Gleick; The Better Angels of Our Nature by Steven Pinker; The Viral Storm by Nathan Wolfe. The only one I’ve read of these is the Steven Pinker, and very good it was as well – as was the talk he gave at the Royal Institution.

I was interested to see that The Guardian is running a competition to win the whole shortlist. I was going to enter, but unfortunately one of the questions is

Guardian

(Added 27 Nov): I contacted the Guardian this morning and was impressed by the speed of their reply (unless it’s because they were twiddling their thumbs in a state of ennui at the time). The reason for this question is: it’s a joke about bad science. So now the Guardian writer who replied to my email obviously thinks I have no sense of humour, and although I’ll admit I’m surprised it’s a joke, I would suggest that it’s not funny (at all, really, but definitely not in the context), in part because the answer which is supposed to be right isn’t actually correct either, as ‘food which contains no chemicals’ is no food at all.

I think the reason it’s not obviously a joke is also because scientific knowledge among journalists, both print and broadcast, is awfully lacking. The other day I heard the tail of a feature on a news programme on Radio 4 about lunar cycles, and the interviewer asked the interviewee (apparently in all seriousness), something like ‘so that stuff about werewolves, there’s nothing in it?’ She didn’t sound like she was joking, and the subject of the interview answered in all seriousness, but then again, maybe she was. And the majority of the presenters of news programmes on Radio 4 people seem to be mildly proud of their inability to understand pretty basic scientific principles.

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