Beacon

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Beacon
2o$2o$2b2o$2b2o! #C [[ THEME 6 GRID GRIDMAJOR 0 THUMBLAUNCH AUTOSTART ]] #C [[ LOOP 2 GPS 2 THUMBSIZE 2 ]]
Pattern type Oscillator
Oscillator type Babbling brook
Family Beacon
Number of cells 6
Bounding box 4×4
Period 2
Mod 2
Heat 2
Volatility 0.25
Rotor type Diagonal on-off
Discovered by John Conway
Year of discovery 1970

The beacon is a common oscillator, composed of two diagonally touching blocks. It was found by John Conway in March 1970.

The beacon is the simplest on-off. Its rotor, known as diagonal on-off, can be supported by several different stators: the two next-smallest are seen in eater plug and 21P2.

A beacon in the right phase can trigger the boat-bit reaction.

Commonness

The beacon is the third most common oscillator in Achim Flammenkamp's census (after the blinker and toad).[1] It is also the thirteenth most common object on Adam P. Goucher's Catagolue.[2]

In other rules

tlife and its related rules have the transition 4q, making beacon an 8-cell still life systematically named "block-tie".

See also

References

  1. Achim Flammenkamp (September 7, 2004). "Most seen natural occurring ash objects in Game of Life". Retrieved on January 15, 2009.
  2. Adam P. Goucher. "Statistics". Catagolue. Retrieved on June 24, 2016.

External links

  • Beacon at Eric Weisstein's Treasure Trove of Life