June 2009
I've been messing around with 'symmetry on average'.
I've tentatively got my BBC BASIC program working - here's the first image.
Only ten billion iterations, and no oversampling or colour.
Even so, it's surprisingly satisfying to get a visualisation from the underlying maths.
May 2009
You may purchase the CD-ROM of Flicker, as sold at the recent RISC OS show in Wakefield, using the pay-pal link below. The CD includes seven sample films, with sound, and costs just £5.
April 2009
I'm presenting a ton of new software at this year's Wakefield show.
I will talk for ten minutes each on...
* RISCOScode (webzine)
* !Abut (new application)
* !Flicker (new application)
* ArtGraph Film Studio (new application)
Two sample !Flicker animations are given below.
Both were made using ArtGraph Film Studio.
Click on either the left or the right image to play.
February 2009
A *new* version of the six program MathMagical Software Suite is now available featuring:
* ArtGraph Film Studio
* Mandelbrot Movie Maker
* QuickGraph (graph plotter)
*MathBox (Maths activities)
*SuDoku
*TurtleChalk (Logo turtle graphics)
The price of the suite remains unchanged at £65. As a free bonus, I'll include a copy of !Flicker, MathMagical's multi-media desktop player and sample 'films'. Requires a StrongARM machine or better with 48MB+ of RAM, and, preferably, 2MB of VRAM.
Order from the software page.
Existing users can upgrade for £25.
ArtGraph Film Studio
TUTORIAL
Click on the ArtGraph logo, above.
January 2009
Happy New Year !
The purchase of an Apple MacBook Pro computer and the resulting experience is the subject of my recently published article:
November 2008
My creative endeavours of late have been directed towards the mathematics behind sequences of colours on computers. The motivation has been a desire to produce the ultimate Mandelbrot Artists software package. You will need a computer, web browser and monitor that can handle a colour depth of 16 million colours to see these ten Mandelbrots in their full glory:
The full size images, obtained by clicking on the thumbnails, are each 300 by 300 pixels. This is small because I'm also experimenting with writing animation software and it keeps the file size down. I've also used these images to produce a webpage slideshow. To see the slideshow and read about how it was constructed visit the RISCOScode website.
My ArtGraph software
Click on any image for an enlargement and gereration details
Still available: The CD-ROM, readable on all computers, of my art.
A few (low resolution) samples of what is on the CD :
Click on any image for an enlargement
Cheques payable to
Martin Hansen, Shrewsbury School, Shrewsbury SY3 7BA.
You may also pay using paypal, credit or debit cards :
A Prime Number Generator for RISC OS
Here is a RISC OS Prime Number Generator for RISC OS. Anthony Haynes wrote the ARM machine code and I added the routines to write the results in a plain text format and wrap the project up in a user friendly WIMP front end. Our !MakePrime software is free to download but the copyright remains with Anthony and myself.
There will be a MakePrime version II along in a few months. This is currently under test. On Iyonix, MakePrime II has managed to generate 100 million primes using an array of around 128 megabytes. This is twenty times more primes than the maximum available from the current version. It generates these in less than 6 minutes. ( Which I find impressive ! )
The current !MakePrime download is designed to run on a StrongARM RiscPC with over 32MB of RAM. It will run (twice as fast) on the A9, Iyonix and under VirtualAcorn emulation on Windows and Apple machines.
There is more information about prime numbers (from January 2007) further down this page.
The program requires a directory called "Primes" be placed next to it (as in the Zip archive) and it will place the files written, one for each million primes, into this.
The Powell Mathematics Prize 2007
The five puzzles from the Powell Mathematics Prize competition 2007 and their solutions are available via mouse clicks on the relevant letters below.
March 2007
I'm thrilled to have been given copies of the Mathematical Gazette dating back to 1938. The first thirty years worth of my aquisition belonged to the late Hugh Launchbury, and those since 1968 to Jack Davies. Both men taught mathematics in Cheltenham.
January 2007
I find prime numbers totally mesmerising.
This year's RI Christmas lectures got me thinking about them with a passion I've not had for years. I found that I didn't have the database of primes I needed to test various ideas I last looked at years ago. So this month I've been sorting that out. You can read about this in my drobe article linked to from below.
Site built and maintained by Martin Hansen, Shrewsbury School, Shrewsbury. SY3 7BA.
All images, text and file downloads (c) 2006 , 2007, 2008 and 2009 by The MathMagical Software Company.
