The beacon is a common period 2 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, mangled 1 beacon and 21P2.
A beacon in the right phase can trigger the boat-bit reaction.
It can, in some sense, be considered a billiard table.
The beacon is the third most common oscillator in Achim Flammenkamp's census (after the blinker and toad). It is also the thirteenth most common object on Adam P. Goucher's Catagolue.
In other rules
tlife and its related rules have the transition 4q, making beacon an 8-cell still life systematically named "block-tie".
- ↑ Dave Greene. Re: Thread for basic questions (discussion thread) at the ConwayLife.com forums
- ↑ Achim Flammenkamp (September 7, 2004). "Most seen natural occurring ash objects in Game of Life". Retrieved on January 15, 2009.
- ↑ Adam P. Goucher. "Statistics". Catagolue. Retrieved on June 24, 2016.
- 6P2.2 at Heinrich Koenig's Game of Life Object Catalogs