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Text File  |  1990-12-24  |  3.7 KB  |  82 lines
  1.  
  2. Newsgroups: eunet.micro.acorn
  3. Path: ousrvr!news
  4. From: sjouke@tnosoes.izf.tno.nl (Sjouke Burry)
  5. Subject: computer recreation
  6. Message-ID: <1321@tnosoes.izf.tno.nl>
  7. Lines: 684
  8. Sender: news@ousrvr.oulu.fi
  9. Organization: TNO Institute for Perception, Soesterberg, The Netherlands
  10. Distribution: eunet
  11. Date: Mon, 23 Jul 90 15:39:01 GMT
  12.  
  13. Computer recreation 5
  14.                 --------,=-----------
  15.                |     Physics and     |
  16.                |  Cellular automata. |
  17.                 ---------------------
  18.  
  19. With thanks to Mr Toffoly and Margolus,
  20.  
  21. Program Atombomb    :Nuclear chain reaction in under- and over critical
  22.                      mass. Critical mass at about 8-10 units between
  23.                      molecules.
  24.  
  25.         Bounce      :Moving particles and barriers.
  26.  
  27.         Chemicwave  :Cellular automate, simulating epidemic waves
  28.                      propagating through a population.
  29.                      It also simulates a certain chemical reaction,
  30.                      in which the catalist is used up, and has to diffuse
  31.                      back in from elsewhere.The reaction products have 
  32.                      different colours.
  33.  
  34.         Demonwave   :simple version of the above program.
  35.  
  36.         Banks       :C.A.,capable of showing signal transportation and
  37.                      logic circuits. When clicking at PATTERN , you see
  38.                      a number of oscillators, wires, and a divider by two.
  39.  
  40.         Brain       :C.A.,simulating a neural network. A cell fires,if it
  41.                      is sensitive, and has two firing neighbours.
  42.                      After firing , a cell is inhibited for one cycle,
  43.              then turns sensitive again.
  44.  
  45.         Dendrite    :C.A., showing diffusion limited growth of particles
  46.                      on a foreign surface.
  47.  
  48.         Computer    :Time reversible cellular automate capable of computing.
  49.                      Let the program proceed for a time, then hit space
  50.                      to reverse the time flow.
  51.  
  52.         Breeder     :A two phase C.A. using an eor rule to breed/multiply 
  53.                      a few patterns.
  54.                      With PROCCHECK you can see those patterns and rules
  55.                      enlarged.
  56.                      The rule is:scan around the current cell, with the
  57.                      small subpattern belonging to the current phase as a
  58.                      guide.Count all white cells pointed to by the pattern
  59.                      If the count is odd, the current cell turns white.
  60.  
  61. If interested in cellular automata,read  Cellular Automata Machines
  62.                                          Toffoli and Margolus
  63.                                          ISBN 0-262-20060-0
  64.                                          
  65.                                          Cellular Automata
  66.                                          Workshop proceedings
  67.                                          Farmer,Toffoli,Wolfram
  68.                                          ISBN 0-444-86850-X
  69.                                          
  70.  
  71.                              I hope you like this,
  72.                                                   Sjouke.
  73. *********************************************************************
  74. * Sjouke Burry                           +31 34 63 56426(room phone)*
  75. * TNO Institue for perception            +31 34 63 56211(phone desk)*
  76. *P.O.Box 23                              +31 34 63 53977( fax )     *
  77. * 3769 ZG Soesterberg                                               *
  78. * The Netherlands                                                   *
  79. *                 Email adress: sjouke@izf.tno.nl                   *
  80. *                 Full path   :uunet!hp4nl.nluug.nl!tnosoes!sjouke  *
  81. *********************************************************************
  82.