Difference between revisions of "Beacon"

From LifeWiki
Jump to navigation Jump to search
(links)
(17 intermediate revisions by 5 users not shown)
Line 1: Line 1:
{{Oscillator
{{Oscillator
|name         = Beacon
|name             = Beacon
|pname       = beacon
|pname           = beacon
|c           = 6
|family          = Beacon
|bx           = 4
|f1              = Babbling brook
|by           = 4
|c               = 6
|p           = 2
|bx               = 4
|h           = 2
|by               = 4
|v           = 0.25
|fc              = 8.8
|discoverer   = John Conway
|p               = 2
|discoveryear = 1970
|m                = 2
|rulemin     = B3/S23
|h               = 2
|rulemax     = B35678/S235678
|v               = 0.25
|rulespecial = [[Conway's Game of Life|Conway Life]]
|rotor            = Diagonal on-off
|synthesis   = 3
|discoverer       = John Conway
|synthesisRLE = true
|discoveryear     = 1970
|life105      = true
|rulemin         = B3/S23
|life106      = true
|rulemax         = B35678/S235678
|plaintext    = true
|rulespecial     = [[Conway's Game of Life|Conway Life]], [[HighLife]]
|rle          = true
|isorulemin      = B3a/S2ae3a
|animated     = true
|isorulemax      = B2-an34-w5678/S01234-q5678
|viewerconfig = #C [[ LOOP 2 GPS 2 THUMBSIZE 2 ]]
|synthesis       = 3
|synthesisRLE     = true
|plaintext        = true
|rle              = true
|apgcode          = xp2_318c
|pentadecathlonid = 6P2.2
|animated         = true
|viewerconfig     = #C [[ LOOP 2 GPS 2 THUMBSIZE 2 ]]
}}
}}
The '''beacon''' is a common [[oscillator]], composed of two diagonally touching [[block]]s. It was found by [[:Category:Patterns found by John Conway|John Conway]] in March [[:Category:Patterns found in 1970|1970]].  
The '''beacon''' is a common {{period|2}} [[oscillator]], composed of two diagonally touching [[block]]s. It was found by [[John Conway]] in March {{year|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]].
The beacon is the simplest [[on-off]]. Its [[rotor]], known as [[diagonal on-off]], can be supported by several different [[stator]]s: 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.
A beacon in the right phase can trigger the [[boat-bit]] reaction.
It can, in some sense, be considered a [[billiard table]].<ref name="post78873" />


==[[List of common oscillators|Commonness]]==
==[[List of common oscillators|Commonness]]==
The beacon is the third most [[common]] [[oscillator]] in [[Achim Flammenkamp's census]] (after the [[blinker]] and [[toad]]).<ref>{{citeAchim|accessdate=January 15, 2009}}</ref> It is also the thirteenth most common object on [[Adam P. Goucher]]'s [[Catagolue]].<ref>{{citeCatagolueStats|June 24, 2016}}</ref>
The beacon is the third most [[common]] [[oscillator]] in [[Achim Flammenkamp's census]] (after the [[blinker]] and [[toad]]).<ref>{{citeAchim|accessdate=January 15, 2009}}</ref> It is also the thirteenth most common object on [[Adam P. Goucher]]'s [[Catagolue]].<ref>{{citeCatagolueStats|June 24, 2016}}</ref>
==In other rules==
[[tlife]] and its related rules have the transition [[Isotropic non-totalistic Life-like cellular automaton|4q]], making beacon an 8-cell [[still life]] systematically named "block-tie".


==See also==
==See also==
Line 35: Line 47:
   
   
==References==
==References==
<references />
<references>
<ref name="post78873">{{LinkForumThread
|format = ref
|title  = Re: Thread for basic questions
|p      = 78873
|author = Dave Greene
|date  = July 3, 2019
}}</ref>
</references>
   
   
==External links==
==External links==
Line 41: Line 61:
{{LinkLexicon|lex_b.htm#beacon}}
{{LinkLexicon|lex_b.htm#beacon}}
{{LinkCatagolue|xp2_318c}}
{{LinkCatagolue|xp2_318c}}
{{LinkPentadecathlonObject|6P2.2}}


{{Symmetry|diagonal4}}
{{Symmetry|diagonal4}}
[[Category:Eaters]]
[[Category:Eaters]]
__NOTOC__
__NOTOC__

Revision as of 15:49, 8 September 2019

Beacon
2o$2o$2b2o$2b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ LOOP 2 GPS 2 THUMBSIZE 2 ]]
View animated image
View static image
Pattern type Oscillator
Oscillator type Babbling brook
Family Beacon
Number of cells 6
Bounding box 4 × 4
Frequency class 8.8
Period 2
Mod 2
Heat 2
Volatility 0.25
Strict volatility 0.25
Rotor type Diagonal on-off
Discovered by John Conway
Year of discovery 1970

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.[1]

Commonness

The beacon is the third most common oscillator in Achim Flammenkamp's census (after the blinker and toad).[2] It is also the thirteenth most common object on Adam P. Goucher's Catagolue.[3]

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. ↑ Dave Greene (July 3, 2019). Re: Thread for basic questions (discussion thread) at the ConwayLife.com forums
  2. ↑ Achim Flammenkamp (September 7, 2004). "Most seen natural occurring ash objects in Game of Life". Retrieved on January 15, 2009.
  3. ↑ Adam P. Goucher. "Statistics". Catagolue. Retrieved on June 24, 2016.

External links

Template:LinkWeisstein

Retrieved from "https://conwaylife.com/w/index.php?title=Beacon&oldid=63729"