Author Archive

Judgment Day

Posted in Poetry with tags , , on May 22, 2011 by telescoper

Well, I guess the Rapture didn’t come after all. Or maybe it did and I’m unsurprisingly not among the chosen few to be saved? I studiously avoided try to make fun of the whole thing, despite the fact that yesterday everyone seemed to be posting rapture jokes like there was no tomorrow.

Anyway, for those who were disappointed by the poor turnout for the Apocalypse here is another poem by R.S. Thomas; this one is called called Judgment Day

Yes, that’s how I was,
I know that face,
That bony figure
Without grace
Of flesh or limb;
In health happy,
Careless of the claim
Of the world’s sick
Or the world’s poor;
In pain craven –
Lord breathe once more
On that sad mirror
Let me be lost
In mist for ever
Rather than own
Such bleak reflections,
Let me go back
On my two knees
Slowly to undo
The knot of life
That was tied there.

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Radical Research IV – rating researchers (via Cosmology at AIMS)

Posted in Science Politics with tags , , on May 22, 2011 by telescoper

A “Mr Smith” from Portugal drew my attention to this post. I’ve posted from time to time about my scepticism about bibliometricism and this piece suggests some radical alternatives to the way citations are handled. I’m not sure I agree with it, but it’s well worth reading.

In this, the 4th post in this series (the others on video abstracts, object oriented paper writing and freelance postdocs are here: 1,2,3), I would like to chat about a tough but important problem and present some proposals to address it, which vary from conservative to bordering on the extreme. Crazy ideas can be stimulating and fun, and I hope the proposals achieve at least one of these. They might even turn out to be useful. One can hope. The … Read More

via Cosmology at AIMS

Cosi fan tutte

Posted in Opera with tags , , , , on May 21, 2011 by telescoper

It’s been a long time since I posted an opera review. That’s because neither of the operas offered by Welsh National Opera earlier this year appealed to me very much and since then I’ve been too busy doing other things to take in an opera anywhere else. However, the summer season of WNO has now started so now at last there’s something of an operatic nature to write about. In fact, I was lucky enough to get tickets for the first night of WNO’s new production of Così fan tutte by Wolfgang Amadeus Mozart and duly went along yesterday evening. The Millennium Centre was pretty full – as you’d expect for a first night of an enduringly popular opera.

In case you weren’t aware, Così fan tutte is a masterpiece of comic opera (or, technically speaking, opera buffa) written in collaboration with Lorenzo da Ponte who also wrote the libretti for Don Giovanni and The Marriage of Figaro. The title can be loosely translated as “That’s how all women behave”; the -e on “tutte” indicates a feminine plural. The plot -such as it is – revolves around two pays of lovers: Guglielmo, who is engaged to Fiordiligi, and Ferrando, who is engaged to Fiordiligi’s sister, Dorabella. Both Guglielmo and Ferrando are sailors. All four are friends with the scheming Don Alfonso, who orchestrates the unfolding events, presumably for his own amusement.

Don Alfonso suggests to Ferrando and Guglielmo that their beloved fiancées are not as faithful as they seem to imagine and the three agree a wager. Ferrando and Guglielmo pretend that they’ve been called up for active service. Don Alfonso joins Fiordiligi and Dorabella in the sumptuous trio Soave sia il vento as the men appear to sail off for battle. The ladies are heartbroken and pledge fidelity to their departed lovers. However, the two sailors soon return in disguise in order to attempt their seduction. After various goings-on the men succeed in seducing each others fiancees and a mock wedding is staged. The marriage is interrupted by the sound of the sailors’ return. After the quickest of quick changes the two men re-appear without their disguises and confront their unfaithful women. Don Alfonso has won his bet.

Like all opera buffa the plot sounds faintly ridiculous – which it is – but of course the key to its success as a piece is not just the comic action, but also the gorgeous music which carries it along. In this particular opera there’s almost no end to the musical loveliness as Mozart has each principal singing alone, and in combinations of twos and threes. Mozart’s writing for two, three or four voices is truly wonderful to listen to, and there are many fine examples of such in this opera.

In this production Guglielmo and Ferrando are sailors who are stationed in a British seaside resort, complete with promenade, pier, Punch & Judy show and Italian ice-cream parlour (named Botticelli‘s). This setting takes  it quite a long way downmarket  compared to the original location of Naples, especially when the Butlins-style redcoats appear, and this is carried through to the much coarser way the comedy is handled than you find in many productions of this piece. This approach does provide enjoyable moments of slapstick hilarity but also causes some difficulties.

For example, it is key to this opera that the character of Don Alfonso has to have some sort of power over the four main protagonists. In other words, it has to be credible that they believe what he says and go along with his suggestions. In this production, however, Don Alfonso is meant to be a “local pier entertainer” – in fact he actually looks more like Flash Harry. I found it hard to accept that anyone would believe anything that this particularly dodgy spiv had to say, and his interaction with the two ladies in particular lacked all credibility.

Another thing I didn’t like was the way the opening of the piece was handled. Like most of Mozart’s operas, Così fan tutte is blessed with a splendid overture, perhaps not as brilliant the other Da Ponte operas but full of playful exuberance and very much worth listening to. You can call me old-fashioned, but I do like to hear the overture, preferably with an empty stage or with the curtain down. In this production, however, as soon as the overture started, the stage began to fill with various extras doing various (admittedly comic) things. A particularly funny sequence of people walking dogs backwards and forwards got a huge laugh, but which drowned out the music entirely. What a waste.

I suppose the overall point I’m trying to make is that this production tried too hard to get cheap laughs. It’s just not necessary to milk it like that – it’s funny enough anyway!

However, these are relatively small objections. I’ll temper them by adding that some of the comedy in this production is inspired. Ferrando wore a false nose that made him look like Barry Manilow and Guglielmo’s false moustache gave him the appearance of Comrade Stalin. The latter looked particularly louche in white tennis shorts and ghastly red blazer.

Neal Davies (baritone) was Don Alfonso, amusingly played but lacking the deep sonority in his voice really needed to carry the role off. Ferrando was played by Robin Tritschler (tenor), whose light agile voice is ideal.  Gary Griffiths (baritone) as Guglielmo was outstanding, with an excellent voice and obvious flair for the comic touches. Fiordiligi (Camilla Roberts) and Dorabella (Helen Lepalaan) were also good. Despina – a waitress in Botticelli’s ice-cream parlour and Don Alfonso’s accomplice (often in disguise) – was pert and feisty but her voice lacked projection; at times she was barely audible.

Anyway, in view of the fact that the comedy dog-walking interfered with last night’s overture I thought I’d end  by posting a version here. I love the way that little phrase is thrown around among the wind instruments!

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Dark Energy is Real. Really?

Posted in Astrohype, The Universe and Stuff with tags , , , , , on May 20, 2011 by telescoper

I don’t have much time to post today after spending all morning in a meeting about Assuring a Quality Experience in the Graduate College and in between reading project reports this afternoon.

However, I couldn’t resist a quickie just to draw your attention to a cosmology story that’s made it into the mass media, e.g. BBC Science. This concerns the recent publication of a couple of papers from the WiggleZ Dark Energy Survey which has used the Anglo-Australian Telescope. You can read a nice description of what WiggleZ (pronounced “Wiggle-Zee”) is all about here, but in essence it involves making two different sorts of measurements of how galaxies cluster in order to constrain the Universe’s geometry and dynamics. The first method is the “wiggle” bit, in that it depends on the imprint of baryon acoustic oscillations in the power-spectrum of galaxy clustering. The other involves analysing the peculiar motions of the galaxies by measuring the distortion of the clustering pattern introduced seen in redshift space; redshifts are usually denoted z in cosmology so that accounts for the “zee”.

The paper describing the results from the former method can be found here, while the second technique is described there.

This survey has been a major effort by an extensive team of astronomers: it has involved spectroscopic measurements of almost a quarter of a million galaxies, spread over 1000 square degrees on the sky, and has taken almost five years to complete. The results are consistent with the standard ΛCDM cosmological model, and in particular with the existence of the  dark energy that this model implies, but which we don’t have a theoretical explanation for.

This is all excellent stuff and it obviously lends further observational support to the standard model. However, I’m not sure I agree with the headline of press release put out by the WiggleZ team  Dark Energy is Real. I certainly agree that dark energy is a plausible explanation for a host of relevant observations, but do we really know for sure that it is “real”? Can we really be sure that there is no other explanation?  Wiggle Z has certainly produced evidence that’s sufficient to rule out some alternative models, but that’s not the same as proof.  I worry when scientists speak like this, with what sounds like certainty, about things that are far from proven. Just because nobody has thought of an alternative explanation doesn’t mean that none exists.

The problem is that a press release entitled “dark energy is real” is much more likely to be picked up by a newspaper radio or TV editor than one that says “dark energy remains best explanation”….

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Human Life’s Mystery

Posted in Poetry with tags , on May 20, 2011 by telescoper

We sow the glebe, we reap the corn,
We build the house where we may rest,
And then, at moments, suddenly,
We look up to the great wide sky,
Inquiring wherefore we were born…
For earnest or for jest?

The senses folding thick and dark
About the stifled soul within,
We guess diviner things beyond,
And yearn to them with yearning fond;
We strike out blindly to a mark
Believed in, but not seen.

We vibrate to the pant and thrill
Wherewith Eternity has curled
In serpent-twine about God’s seat;
While, freshening upward to His feet,
In gradual growth His full-leaved will
Expands from world to world.

And, in the tumult and excess
Of act and passion under sun,
We sometimes hear-oh, soft and far,
As silver star did touch with star,
The kiss of Peace and Righteousness
Through all things that are done.

God keeps His holy mysteries
Just on the outside of man’s dream;
In diapason slow, we think
To hear their pinions rise and sink,
While they float pure beneath His eyes,
Like swans adown a stream.

Abstractions, are they, from the forms
Of His great beauty?-exaltations
From His great glory?-strong previsions
Of what we shall be?-intuitions
Of what we are-in calms and storms,
Beyond our peace and passions?

Things nameless! which, in passing so,
Do stroke us with a subtle grace.
We say, ‘Who passes?’-they are dumb.
We cannot see them go or come:
Their touches fall soft, cold, as snow
Upon a blind man’s face.

Yet, touching so, they draw above
Our common thoughts to Heaven’s unknown,
Our daily joy and pain advance
To a divine significance,
Our human love-O mortal love,
That light is not its own!

And sometimes horror chills our blood
To be so near such mystic Things,
And we wrap round us for defence
Our purple manners, moods of sense-
As angels from the face of God
Stand hidden in their wings.

And sometimes through life’s heavy swound
We grope for them!-with strangled breath
We stretch our hands abroad and try
To reach them in our agony,-
And widen, so, the broad life-wound
Which soon is large enough for death.

by Elizabeth Barrett Browning (1806-61)

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The joy of viXra

Posted in The Universe and Stuff with tags , , , , , on May 19, 2011 by telescoper

From time to time on this blog I post rants about the state of scientific publishing, open access, the importance of the arXiv for astronomy and cosmology, and so on.

This morning, however, I discovered an “alternative” side to the whole business of online science, a site by the name of viXra. Most readers will probably be familiar with this site already – many no doubt publish there, in fact – but I have to say that it’s completely new to me. I urge you to check it out.

The structure and layout of viXra is almost identical to the arXiv, but the content is a bit … er … different. Naturally, I went straight for the section that mirrors astro-ph on the arXiv. The viXra version of astro-ph so far contains only 88 publications, but among them are papers of such outstanding quality that I’m sure this remarkable collection will grow very quickly when like-minded authors around the world find out about it.

I thought I’d post my favourite as an example. Initially, I was going to go with one entitled Ball Lightning, Micro Comets, Sprite-Fireballs and X-Ray/gamma Flashes According to Quantum FFF Theory, with the abstract

FUNCTION FOLLOWS FORM in Quantum FFF THEORY. The FORM and MICROSTRUCTURE of elementary particles, is supposed to be the origin of FUNCTIONAL differences between Higgs- Graviton- Photon- and Fermion particles. As a consequence, a NEW splitting, accelerating and pairing MASSLESS BLACK HOLE, able to convert vacuum energy (ZPE) into real energy by entropy decrease, seems to be able to explain quick Galaxy- and Star formation, down to Sunspots, (Micro) Comets, Lightning bolts, Sprite Fireballs and Ball Lightning.

I decided against this one, however, because of the tendency to burst inexplicably into upper case every now and again, which I found rather alarming.

I was also forced to reject this one, The Structuring Force of the Natural World, on the grounds that (a) it’s in Chinese so I can’t read it and (b) I don’t know what a “basket graph” is. Otherwise I’m sure its a splendid piece of work.

The assumption that the mass distribution of spiral galaxies is rational was suggested 11 years ago. The rationality means that on any spiral galaxy disk plane there exists a special net of orthogonal curves. The ratio of mass density at one side of a curve (from the net) to the one at the other side is constant along the curve. Such curve is called a proportion curve. Such net of curves is called an orthogonal net of proportion curves. I also suggested that the arms and rings are the disturbance to the rational structure. To achieve the minimal disturbance, the disturbing waves trace the orthogonal or non-orthogonal proportion curves. I proved 6 years ago that exponential disks and dual-handle structures are rational. Recently, I have also proved that rational structure satisfies a cubic algebraic equation. Based on these results, this paper ultimately demonstrates visually what the orthogonal net of proportion curves looks like if the superposition of a disk and dual-handle structures is still rational. That is, based on the natural solution of the equation, the rate of variance along the ‘radial’ direction of the logarithmic mass density is obtained. Its image is called the ‘basket graph’. The myth of galaxy structure will possibly be resolved based the further study of ‘basket graphs’.

In the end I decided to go for this impressive article, A Cantorian Superfluid Vortex and the Quantization of Planetary Motion

This article suggests a preliminary version of a Cantorian superfluid vortex hypothesis as a plausible model of nonlinear cosmology. Though some parts of the proposed theory resemble several elements of what have been proposed by Consoli (2000, 2002), Gibson (1999), Nottale (1996, 1997, 2001, 2002a), and Winterberg (2002b), it seems such a Cantorian superfluid vortex model instead of superfluid or vortex theory alone has never been proposed before. Implications of the proposed theory will be discussed subsequently, including prediction of some new outer planets in solar system beyond Pluto orbit. Therefore further observational data is recommended to falsify or verify these predictions. If the proposed hypothesis corresponds to the observed facts, then it could be used to solve certain unsolved problems, such as gravitation instability, clustering, vorticity and void formation in galaxies, and the distribution of planet orbits both in solar system and also exoplanets.

I’m not an expert on the “Cantorian superfluid vortex theory”, but I suspect the author may well be correct in saying that it has not previously been proposed as an explanation for the planetary orbits…

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Der Abschied

Posted in Music with tags , , , , , , on May 18, 2011 by telescoper

A little dickie bird (or, more accurately, quite a large one with impressive plumage) emailed me to point out that today, 18th May 2011, is the 100th anniversary of the death of Gustav Mahler. I couldn’t let the date go unmarked, so thought I’d post something here. I couldn’t decide which of two bits to put up, so decided to go with them both.

Although it’s long (and I don’t really like posting segments of things) it seemed appropriate to offer Der Abschied (“The Farewell”), the last movement from Das Lied von der Erde. I picked this version, featuring the legendary mezzo soprano Christa Ludwig.

Incidentally, Das Lied von der Erde is a symphony and it was written by Mahler after the 8th Symphony. However, it isn’t the 9th Symphony, which is a different work, or indeed the 10th which was unfinished at Mahler’s death and which I heard here in Cardiff recently.

If you haven’t got time to listen to all of that one, try this remarkable recording instead. It’s Urlicht, one of the songs from Das Knaben Wunderhorn which appears in Mahler’s 2nd Symphony (“The Resurrection”), sung by the late Maureen Forrester (contralto) and conducted by none other than a (very young) Glenn Gould.

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Cute Physics Problem

Posted in Cute Problems, The Universe and Stuff with tags , on May 17, 2011 by telescoper

I heard this nice physics problem today so I thought I’d try it out on here. You will probably be able to find the answer on the net somewhere but please try to figure it out yourself before doing so!

There are two identical chambers, A and B containing identical metal balls which begin the experiment at the same temperature. Apart from the balls, each chamber is a perfect vacuum and has thermally conducting walls at a lower temperature than the ball it contains.

In A the ball is resting on the floor, which is made of material which is a perfect thermal insulator.

In B the ball is hanging from the ceiling by a piece of light inextensible string, not touching the floor. Both the string and the ceiling are also made of perfectly insulating material.

Which ball cools down faster?

Please put your answer through the poll here. When enough people have voted, I’ll tell you the answer…

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Rainbow over Cardiff

Posted in Uncategorized with tags , , , , , on May 17, 2011 by telescoper

Nice to see the Rainbow Flag  flying at the Cardiff City Council building this morning..

This is in recognition that today, May 17th, is International Day Against Homophobia, or IDAHO for short. Please remember that although attitudes in the UK are much more enlightened than they were only a few years ago, homophobic violence still happens with distressing frequency. And in places such as Uganda, where a bill has been tabled calling for homosexual acts to be punished by the death penalty, matters are even worse…

If you’re wondering why May 17th was chosen for this, then I can tell you that it’s to commemorate May 17th 1990, which is when the World Health Organisation removed homosexuality from its list of “mental illnesses”.

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Old Boy Network

Posted in Columbo with tags , on May 17, 2011 by telescoper

It’s only after spending what seems like weeks catching up after my short holiday that I realise I’ve forgotten to post the update that probably most people care about, i.e. my old moggy Columbo.

Well, although he’s not getting any younger he’s still doing OK. I had to make use of the services of a petsitter while I was away (both at NAM and then on holidays). It turns out the lady who usually comes wasn’t available all the time so I had two different people coming to the house at various times. His support network is becoming extensive.

He is of course pretty old now – he was 17 in March – and he’s showing quite a few signs of age. He has been suffering from arthritis in his legs for a while, but the medication seems at least to have stopped it getting worse. He still has a bit of a struggle sometimes getting up and lying down but the discomfort obviously doesn’t last too long. If it gets to the point where he’s in pain all the time then I’ll have to think very hard about what to do.

Despite this ailment (and his continuing diabetes) he still seems happy enough to potter about in the garden in between lengthy snoozes, more often than not on my bed. He’s also still got a healthy appetite. The only times he’s ever been off his food have been when he was really ill, so as long as he’s eating I reckon he’s basically OK. That’s why I don’t mind him cadging for snacks, as is his wont..

Columbo’s basically a friendly old chap and there are occasions when he clearly enjoys having other people around. At other times, though, increasingly frequent now, he clearly prefers his own company and goes off on his own somewhere. I know him well enough not to bother him when he’s in that mood. Actually, Columbo and I are pretty similar in that craving for solitude. We old boys like to keep ourselves to ourselves.

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