Elsewhere
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Recent Posts
Lifestream
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For Facebook 'Hacker Way' is way of life http://t.co/4JihqVB4 // a strange meeting between hacking and product [2nplus1]— 13h ago via @2nplus1
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RT @christineburns: Brilliant visualisation: "Who supports these NHS reforms?" http://t.co/RzLt21Zi (Wait for it to load) [2nplus1]— 17h ago via @2nplus1
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RT @guardiantech: Real hero of the Facebook story isn't Zuckerberg, it's the internet http://t.co/i2vmSGVf [2nplus1]— 2d ago via @2nplus1
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— 2d ago via @2nplus1
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— 2d ago via @2nplus1
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RT @speckled_jim: The published Sport ontology: http://t.co/VqPw5aI2. Good work all round. [2nplus1]— February 1st via @2nplus1
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Crime comparison between Llandaff, Cardiff, Caerdydd CF5, UK and Grangetown, Cardiff, Caerdydd CF11, UK | Crime Rates http://t.co/km4ErH11 [2nplus1]— January 28th via @2nplus1
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Archives
Author Archives: admin
Isometric colouring challenge
The polymathic basket weaver Gareth Williams sent a nice puzzle for Christmas: I’ve been playing with isometric paper. (I didn’t even know such items existed until I went to the exhibition of Rachel Whiteread drawings at Tate Britain!) Anyway, it … Continue reading
Christmas books
C – Tom McCarthy A Mathematical Nature Walk – JA Adams Panamarenko: The Toy Maker from Antwerp Chance Aesthetics These set a good trajectory for 2011.
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The iPeriscope
Required: 2 iPhones. 2 sticks and blue tack. A prodding device. Operate by taking photo with upper device. Email to lower device. View.
Sum of integers
This is why the sum of n integers is 1/2n(n+1). Someone called Gauss worked it out in his head at school, but I like this picture. If you make a rectangle n wide and n+1 high, and shade half of … Continue reading
Archaeological scatterings
I’m watching the first of the “Beauty of Maps” series, the one on the Mappa Mundi. It shows the map as being a complex meeting of religious text and an expression of understanding of the world. The richness of this … Continue reading
A few notes on recently visited constructions
Cerreg Cennen, near Llandeilo, is a castle that was pulled apart by 500 men so it couldn’t be used as a base for robbers. It is built on a limestone crag, immediately above a deep natural cave. The Chapel of … Continue reading
Old flame (attraction from the past)
I was digging around on the Wayback Machine today, and stumbled across a lost piece of code from December 2004. It’s a Strange Attractor Generator, from the pages of Clifford Pickover’s book Computers, Pattern, Chaos and Beauty (p 165). As … Continue reading
Joining the queue
Queues are comprised of customers joining, waiting and then being served. There are two random processes here: arrivals, and serving time, which in this case are both Poisson processes. There can be one or more servers. A handy notation for … Continue reading
Mnemosynr
You have a set of friends, colleagues and vague acquaintances you’ve accumulated over the years, and expressed as a graph of connections in various applications such as Facebook, Myspace, blog networks, twitter, flickr etc. You’ve spent years constructing a trail … Continue reading
Redecorated
I’ve had the builders in, and redesigned this blog. The main aim has been to make a bit more room. The default WordPress theme, despite cosmetic adjustments, is a little mean and narrow – while the wide themes all have … Continue reading