A type of signal travelling through a periodic
agar such as zebra stripes. The leading edge of the signal
removes the agar, and the trailing edge rebuilds the agar some time
later. The distance between the two edges is sometimes adjustable,
as shown in lightspeed bubble. The central part of the "spaceship"
may consist of dying sparks or even simple empty space.
Below is a sample period-5 negative spaceship, found by Hartmut
Holzwart in March 2007, in a small stabilized section of
zebra stripes agar:
The "spaceship" travels to the left at the speed of light, so it
will eventually reach the edge of any finite patch and destroy itself
and its supporting agar.
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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