Sunday, 23 September 2018

Need for a Change

I seem to be unsettled lately. Can't concentrate on anything.
Maybe I need to get on with my proposed move to the Midlands.
Being in the same place for ten years is a long time for me.
Time for a change, a new scene, or a new stimulus.
It might also have something to do with the Brexit impasse.
The whole country needs a good shake-up.

Sunday, 16 September 2018

A Visit to the Midlands

I took the train and coach up to Leicester last Saturday (8 September) though regretted choosing to  walk from Waterloo to Victoria Coach Station, forgetting that the South Bank and Westminster Bridge would be crowded with sight-seers on a Saturday. I preferred to do this rather than risk the change of trains at East Croydon, between different train operators, since in my experience the transfer tends to takes longer than allowed for, especially when the train is late arriving.

On the Sunday I went to Leicester Secular Hall for their Open Day and for the lecture on Chapman Cohen in the evening. In between I visited old haunts in Leicester, where I lived for ten years, and found quite a bit of rebuilding had been done, as compared with last time I was there two years ago, when everything was being knocked down. The Abbey Park fortunately is much the same.

On the Monday I took to the trains again to visit Stoke on Trent, mainly because I had noticed some small terraced houses to rent, similar to the one I had in Leicester, at a reasonable rent. Also because I had only been to that area once before and wanted to see if I would like to live there. Generally I got a good impression, particularly the bus system centred on Hanley. I took a number 3 bus to Tunstall and had a walk in the park there.

Returned home on the Tuesday, but have felt somewhat tired since, so probably overdid the walking and travelling. For some reason I'm getting pains in my hands. Just getting old I suppose. If I do get round to moving to Stoke it will be my last move, but I do feel the need for a change of scene, as well as to make a saving on my rent, and have the freedom of my own front door.

Friday, 24 August 2018

Light Music and an Old Film

Listening to "Light Music" is one of my interests, to which end I am a member of the Light Music Society and have the set of four CDs of British Light |music Classics produced by Ronald Corp, And his others on American and European Classics.

Instead of Beethoven's Ninth that was on the Classic FM evening concert I decided to put on the fourth CD in the collection. This includes a piece called "Cavalcade of Youth" by Jack Beaver, whose name I was unfamiliar with. It includes a stately tune (used for a radio programme called "The Barlows of Beddington" that I've never heard of).

The notes in the leaflet that comes with the CD give Jack Beaver's dates as 1900 - 1963 and says he often contributed music to British films anonymously. It mentions The Thirty-Nine Steps (1933) which is well known and The Case of the Frightened Lady (1940) for which he provided what was considered the first "tabloid piano concerto".

Since I like Richard Addinsell's Warsaw Concerto, and Charles Williams' Dream of Olwen, I thought I would search for this Jack Beaver piece on You Tube. Sure enough they have a whole selection of his film music. Much of it sounds surprisingly familoar. The piano piece is called Portrait of Isla.

I also found that You Tube has the whole film of The Case of the Frightened Lady, and found it sufficiently intriguing to watch through for an hour last night. It is based on an Edgar Wallace play, and this theatricality shows. It is set in a creepy old house owned by an aristocratic family led by Lady Lebanon and her son, a composer. Her Secretary is Isla the Frightened Lady of the title.

As one might expect from an Edgar Wallace story it is a whodunnit, solved by Inspector Tanner of the Yard and his comical sidekick. Quite a few familiar actors of that period in the cast. Definitely a pleasant taste of nostalgia for me.

Thursday, 9 August 2018

Walking in the Rain

A nice quiet cool walk along the prom in the rain with my umbrella this afternoon.
Cool being the most operative word. Hardly anyone about.

Monday, 30 July 2018

Knight's Tour Notes Update

My efforts to put the information from the website into book form have taken a backward step, to leap forward again I hope. The material has broken apart again to take the form of a series of smaller books of around 80 or 96 pages.

This has quickly resolved into ten parts:
0 - Bibliography with Glossary
1 - Theory of Moves (including leapers)
2 - Odd and Oddly Square Boards (6x6 10x10, etc)
3- Symmetry (including mixed quaternary)
4- Simple Linking of Pseudotours
5 - Oblong Boards
6 - Shaped and Holey Boards
7 - Magic Square Knight Tours
8 - Multimover Magic (King, Queen, etc)
9 - Miscellanea (Figured, Lettered, HexBoards etc)

Updated 4 August.

Saturday, 23 June 2018

disphenocingulum again

It seems my alternative disphenocingulum (J90) has been discovered before.
It is number 25 on this page of "near miss" Johnson solids.

http://www.orchidpalms.com/polyhedra/acrohedra/nearmiss/jsmn.htm

This claims that there is some distortion in the cingulum triangle.
Though in my models I could not detect any distortion. It must be very small.

The author appears to be Jim McNeill as named here:

http://www.orchidpalms.com/polyhedra/


Wednesday, 13 June 2018

The Disphenocingulum

As a result of contacts on twitter I have become interested in polyhedra, in particular the "Johnson Solids" which are formed of regular polygons but are not the usual suspects.

In particular a drawing was posted of the "disphenocingulum".  As a result I decided to make a model in card and ended up with two different versions. The 12 orange triangles form the "cingulum". The "spheno" parts form the roof and keel:


Corresponding flat diagrams of the pieces and their connections are:
Left
 Right

The version on the right appears to conform to the patterns shown in the Wikipedia and MathWorld entries for Johnson Solid 90, but the version on the left does not.

So is my new version an alternative ("isotope") of the disphenocingulum? Or is one of them not an authentic Johnson Solid because it has a pair of triangles that are coplanar? It is difficult to tell from the models if some pairs of triangles are at an angle to each other or are flat together. The angle may be very small. In fact the one on the right seems flatter to me than that on the left.