Alan Turing Inquest

The evidence that was presented at the 1954 inquest into Alan Turing’s death, which concluded a suicide verdict, would not stand up today according to Prof Jack Copeland. The story is tragic and romantic, but is it true?

The accepted version of events is that due to the persecution he was suffering as a result of his homosexuality, he took his own life by eating an apple laced with cyanide.

We have… been recreating the narrative of Turing’s life, and we have recreated him as an unhappy young man who committed suicide. But the evidence is not there

Prof Jack Copeland, University of Canterbury, Christchurch, New Zealand

By today’s standards the investigation was poor. For example, the apple was not tested for the presence of cyanide. Turing’s behaviour before his death appears not to be out of the ordinary. He was in the habit of taking an apple to bed and even left a note on his office desk, as was his practice on Fridays, to remind himself what needs to be done upon his return to work.

A motive for suicide is clear, but the pre-meditated intenion is missing.

Link

BBC News

The Olymipcs at the molecular scale!

Scientists at Warwick University teamed up with reserachers at IBM to image a newly synthesised molecule called olympicene- C19H12

The molecule was synthesised by Anish Mistry and David Fox from the University of Warwick. The molecule was then passed on to a team at IBM Research in Zurich who imaged it using a carbon-monoxide tipped atomic force microscopy technique that can show up the structure and bonding in the molecule.

© IBM Research/University of Warwick

Links

BBC news

RSC article

Invisibility cloaks traps a rainbow

Harry Potter’s invisibility cloak is one step closer!

American researchers from Towson University and University of Maryland have created and array of 25 000 individual cloaks. This array is the first of its kind. The results were published on the 25th of May in the Institute of Physics and German Physical Society’s New Journal of Physics [1].

In our array, light is stopped at the boundary of each of the cloaks, meaning we observe the trapped rainbow at the edge of each cloak. This means we could do ‘spectroscopy on-a-chip’ and examine fluorescence at thousands of points all in one go.

Dr Vera Smolyaninova

References

[1] V N Smolyaninova et al 2012 New J. Phys. 14 053029

Links

IOP News

New Journal of Physics article

One week into my new job

I have now been a sessional tutor at the University of Brighton’s  International College for one week. I have enjoyed the lecturing and workshops with the students.  So far everything is going okay and I am sure with a bit more experience I will become an effective teacher.

At this point, any suggestions on how to be a great lecturer would be welcomed!

 

 

Higher contact-like structures and supersymmetry II

My paper “Higher contact-like structures and supersymmetry” has now been accepted for publication in the Journal of Physics A. I will post details of as soon as I know.

In the paper I reformulate N=1 supersymmetry in terms of the non-integral distribution spanned by the SUSY covariant derivatives and cast this in the langauge of a vector valued version of contact geometry.

A preprint can be found here.

An older blog entry can be found here.

Start my new job on Monday

I start my job as a sessional tutor at the University of Brighton’s  International College on Monday 21st May.  The job is lecturing foundation mathematics to overseas students. The level of mathematics is about that of UK A-levels.

Overseas students for whom English is not their first language do present some challenges.  In my experience, the biggest issue is the use of words or phrases that just don’t arise in conversational English.  Simple words and phrases that we take for granted can really throw international students, which in turn can diminish their confidence.

Many of the other issues are really no different to home students, though the intensity may be different. For example, all students get home sick, but this is amplified when in an alien culture.

I am looking forward to gaining more experience of lecturing and this will in fact be the first time I have actually delivered a course.  Most of my previous experience has been in a more supportive role as a teaching assistant and a personal tutor.

A-level mathematics is not equipping students with the right skills

Science Community Representing Education (SCORE), which is a collaboration between several science organisations, published a report on the 27th April which analysed the type, extent and difficulty of mathematics within the 2010 A-level examination papers. The focus was on preparation for undergraduate degrees in the three sciences – biology, chemistry and physics.

Our findings are worrying. A significant proportion of the mathematical requirements – put in place by the examinations regulator, Ofqual, for each of the sciences – were simply not assessed and, if they were, it was often in a very limited way and at a lower level of difficulty than students will need to progress to degree level or into relevant employment.

Professor Graham Hutchings, Chair of SCORE

Links

The report can be found here (pdf)

IOP News

LMS News

Dr Who's sonic screwdriver created in Scotland!

When the scriptwriters for Doctor Who imagined a futuristic device, they came up with the Sonic Screwdriver. Now a team of physicists at the University of Dundee have taken equipment designed for MRI-guided focused ultrasound surgery and demonstrated a real Sonic Screwdriver – lifting and spinning a free-floating 10 cm diameter rubber disk with an ultrasound beam.

Universtity of Dundee

[youtube:http://www.youtube.com/watch?v=SeB69CcLEI8]

Links

University of Dundee Press Release

GCHQ release Turing papers

In order to mark the centenary of Alan Turing’s birth, two of his mathematical research papers, believed to have been written whilst he was at Bletchley Park during World War II, have been released by GCHQ to The National Archives.

Due to the sensative nature of the work done at GCHQ, the papers were not released earlier.

We are delighted to release these papers showing more of Alan Turing’s pioneering research during his time at Bletchley Park. It was this type of research that helped turn the tide of war and it is particularly pleasing that we are able to share these papers during this centenary year.

GCHQ spokesperson

The two papers are called “Paper on Statistics of Repetitions’ and ‘The Applications of Probability to Crypt’.

Paper on Statistics of Repetitions

In this paper Turing writes an informal report in which he works out the best statistical method of testing whether two cipher messages use the same key in parts of the message.

The Applications of Probability to Crypt

In this second paper, Turing applies rigorous probability analysis to coding problems of the day. One highlight is where Turing uses life expectancy to examine conditional probability. The associated example, “Hitler is now age 52”, adds piquancy and suggests that the paper was written between April 1941 and April 1942.

Links

GCHQ Press Release

Random thoughts on mathematics, physics and more…