Required files
software.html : contains the information on this web page
gefd14x.zip : Compressed archive of executables and additional files
unzip.exe : Archive extractor
Required hardware
This software should run as a DOS application on any PC (from 386 onwards).
Extracting the software
To extract the software first ensure that you have approx 2.5 Mb of
free space on your hard disk. Decide where you want the programs to
go ( for example c:\gefd ) and create the necessary directory(ies).
This document will refer to this location as GEFDHOME.
Download the files below to GEFDHOME. (Your browser may try to display these
files rather than save them. With netscape use right mouse button, then `Save
link as'. With explorer use the equivalent.)
software.html
gefd14x.zip
unzip.exe
Then move to the directory GEFDHOME and execute
unzip gefd14x.zip
The archive should unpack into the subdirectories bin/ etc/ and doc/
and will create the file gefd.bat at the top level.
Edit the second line of gefd.bat so that the environment variable
GEFDHOME is set to the place where you unpacked everything. The
default is c:\gefd. You can then copy gefd.bat to someplace suitable
in your default path to run the demonstrations.
The file gefd.bat sets up some important environment variables and
then runs a menu program displaying a list of the available
demonstrations. You can exit the menu program by pressing ESC.
Problems and Feedback
We cannot guarantee to be able to resolve all problems encountered with
downloading and running the software, but if you send details of problems by
email we will do our best to consider and suggest solutions.
We will be very pleased to receive email feedback on the demonstrations
themselves, whether on details of how the demonstration works or on the
underlying mathematics and physics.
Peter Haynes (phh@damtp.cam.ac.uk)
December 2001