A spaceship-like object which stretches a wick that
is fixed at the other end. The wick here is assumed to be in some
sense connected, otherwise most puffers would qualify as
wickstretchers. The first example of a wickstretcher was found in
October 1992 (front end by Hartmut Holzwart and back end by Dean
Hickerson) and stretches ants at a speed of c/4. This is shown
below with an improved back end found by Hickerson the following
month.
Diagonally moving c/4 and c/12 wickstretchers have also been built:
see tubstretcher and linestretcher. In July 2000 Jason Summers
constructed a c/2 wickstretcher, stretching a p50 traffic jam wick,
based on an earlier (October 1994) pattern by Hickerson. A c/5
diagonal wickstretcher was found in January 2011 by Matthias
Merzenich, who also discovered a c/5 orthogonal wickstretcher two
years later in March 2013.
Game of Life Explanation
The Game of Life is not your typical computer game. It is a cellular
automaton, and was invented by Cambridge mathematician John Conway.
This game became widely known when it was mentioned in an article
published by Scientific American in 1970. It consists of a grid of
cells which, based on a few mathematical rules, can live, die or
multiply. Depending on the initial conditions, the cells form various
patterns throughout the course of the game.
Rules
For a space that is populated:
Examples
Each cell with one or no neighbors dies, as if by solitude.
Each cell with four or more neighbors dies, as if by
overpopulation.
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