A gun or signalcircuit that fires its gliders (or
whatever) right at the edge of the pattern, so that it can be used to
fire them closely parallel to others. This is useful for
constructing complex guns. Compare glider pusher, which can in
fact be used for making edge shooters.
The following diagram shows a p46 edge shooter found by Paul
Callahan in June 1994.
Stable edge shooters became possible with the development of
Herschel circuitry. For example, NW31, BNE14T30, RNE-19T84,
and the high-clearanceFx119 inserter are often used in
shotguns for complex salvos. Composite edge-shooter circuits with
arbitrarily high clearance can be constructed.
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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