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DR RICHARD MORRIS

Interactive geometry programs, mathematical programming and mathematics tuition.

rich@singsurf.org


ONLINE CURVE AND SURFACE PROGRAMS

Graphs

Parametric curves

Polar plots

Implicit curves

Complex plots

 

Grid plots

 

Parametric surfaces

 

Implicit surfaces

SingSurf the full desktop java program, allowing complex 2 and 3 dimensional
models from singularity theory and differential geometry to me constructed. For
example it can calculate the principle directions, ridges, and focal surfaces of
parametrised surface, or calculate the symmetry sets of plane curve.


JEP

A Java library for parsing, evaluating mathematical equations.

Core Jep Jep is a small fast mathematical parsing and evaluation library. It
suports various datatype including, BigDecimals, strings and complex number and
has a wide rang of built in functions. It is highly customizable allow diferent
syntaxes for equations. I am co-developer and its available from
singularsys.com. Jep Extensions Jep Extensions is a set of extensions to Jep
which add symbolic operations, fast evaluation, a type system allowing
evaluation using matrices and rational numbers, limited structured programing
and conversion to MathML. GWT Jep GWT Jep is a javascript version of the core
Jep library using the Google Web Toolkit. Examples This simple calculator is
made using Jep/GWTJep

Calc

More extensive examples can be found in Jep Console, Extensions Console and the
plotting apps to the left.




KALEIDOSCOPE

Explore the 17 symmetric wallpaper patterns.



 * Wallpaper Patterns


MATHEMATICS AND SCIENCE TUITION

Interested in private mathematics tuition in south-east Cornwall? I offer
tuition at all ages and all levels with an emphasis on engaging the student and
exciting the students:

My son has just finished his GCSEs and I had a fantastic tutor, Richard Morris,
who taught him for 1.5 hours per week for about 12 wks before his exams. From
really disliking maths he now really loves it and found his exam
straightforward. - Di Baker MentOrg

Reciently I've been working with Home Educated children teaching interactive
science leasons which are hopefully a bit more fun than school. Home Ed Science
Club.




POLYHEDRA



A collection of uniform polyhedra in rotatable 3D.

 * Polyhedra viewer


ESSAYS

 * Left-Right brain and leaning styles An examination into the theory of brain
   lateralization, learning styles and the implications for education.
 * Blagdon Cross rewilding what happens if you leave 80 acres of land unmanged
   for 10 years?
 * The thermodynamics of tidying a room Why do rooms get messy? Is it a law of
   nature?
 * Hysteresis and Sorites A philosophical investigation into how discrete labels
   can be given to continuously changing phenomena.




CUBIC SURFACES

All the surfaces defined by cubics equations.

 * Singularities of cubic surfaces.
 * A pictorial introduction to singularity theory.
 * Projective Varieties visuliser
 * Singularities and the ADE classification
 * Coxeter groups and the ADE classification


KI-AIKIDO

I teach Ki-Aikido a Japanese physical art, developing the mind and body and
coordination between the two.




DEREK MORRIS - EAST LONDON LOCAL HISTORY

A page dedicated to my late father Derek Morris. Including details on his
research on the Early-Modern (1600–1800) Social Histories of East London;
articles on James Cook; memorial and testimonials; and family history.


FIDDLES

Some javascript experiments.

 * Four-bar linkages
 * The circles of a triangle
 * Superellipsoids
 * Calculating volumes using the divergence theorem

Some have been developed using jsfiddle. My public Fiddles

And a JavaScript extension

 * quora question asker




CV

My full CV (PDF)


PAPERS

Some of my mathematical papers.

 * A new method for drawing algebraic surfaces
 * The sub-parabolic lines of a surface
 * Visualizing duals of surfaces unpublished
 * The use of computer graphics for solving problems in singularity theory
 * A Web-based Client-Server System for the Calculation of Algebraic Surfaces


OTHER STUFF

Lerryn.net My local village website, which I help administer.

Merseyside Dock Action me being arrested at an Earth First! action in the early
90's.

Moon phases long term variations in the length of time between full moons.

You can find me on Wikipedia (Salix alba), Facebook, Quora, YouTube, and
Slashdot (pfafrich).

Some of my software is release on GitHub. This includes an opensource version of
the singsurf program, an older opensource version of Jep, a browser plugin for
quora and a library to communicate with thermal imaging camera mounted on a
raspbery pi using bluetooth.

I have a stackoverflow accounts on the main SO, maths and arduino stacks.

I have worked with Plants For A Future a charity investigating the wide range of
useful plants which can be grown and ecological systems of growing. I still work
a bit with the Cornwall Site near St Veep, Lerryn, Lostwithiel, Cornwall.

Ken Fern's website expands on the Plants for a Future database with an extensive
temperate and tropical plant database.

I do occasional webdevelopment, including phoenix New Life Poetry and Lerryn
River Stores.

I'm on the committee for our vilage website Lerryn.net.




Email rich@singsurf.org for comments.