2c/3 wire

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2c/3 wire is a wire discovered by Dean Hickerson in March 1997, using his dr search program. It supports signals that travel through the wire diagonally at two thirds of the speed of light.

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Each 2c/3 signal is made up of two half-signals that can be separated from each other by an arbitrary number of ticks.

Considerable effort has been spent on finding a way to turn a 2c/3 signal 90 or 180 degrees, since this would by one way to prove Life to be omniperiodic. There is a known 2c/3 converter shown under signal elbow, which converts a standard 2c/3 signal into a double-length signal. This is usable in some situations, but unfortunately it fails when its input is a double-length signal, so it can't be used to complete a loop.[1]

In February 2004, Noam Elkies discovered a glider synthesis of a reaction that can repeatably insert a signal into the upper end of a 2c/3 wire.[1] See stable pseudo-Heisenburp for details. On 11 September 2017, Martin Grant reduced the input reaction to five gliders, as shown in the above pattern, or three gliders plus a Herschel.[2] With the Herschel option the recovery time is 152 ticks.


  1. 1.0 1.1 Jason Summers' jslife pattern collection. Retrieved on October 28, 2020.
  2. Martin Grant (September 11, 2017). Re: Stable signal converters (discussion thread) at the ConwayLife.com forums

External links