A conduit with signal output 90 degrees from its
input. This term is commonly used only for signal wires,
particularly 2c/3 signals. A Snark could reasonably be called a
"glider elbow", but glider reflector is the standard term. A
signal elbow with a recovery time less than 20 ticks would enable a
trivial proof that Conway's Life is omniperiodic.
A near miss is the following elbow-like converter found by Dean
Hickerson. It successfully turns a 2c/3 signal by 90 degrees, but
unfortunately changes it to a double-length signal in the process.
This means that further copies of the converter can not be appended
(e.g., to make a closed loop).
Relatively small compositeMWSS elbows can now be constructed,
using Tanner Jacobi's 2015 discovery of a small H-to-MWSS
component. For example, the Orthogonoid includes a
constructor/reflector that reflects an MWSS stream by 180 degrees,
but it can be trivially reconfigured to make a 90-degree MWSS elbow.
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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