Difference between revisions of "Beacon"
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The '''beacon''' is a common [[oscillator]], composed of two diagonally touching [[block]]s. It was found by [[ | 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 | 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. | ||
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==In other rules== | ==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". | [[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== |
Revision as of 15:49, 8 September 2019
Beacon | |||||||||
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Pattern type | Oscillator | ||||||||
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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 | ||||||||
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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
- ↑ Dave Greene (July 3, 2019). 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.
External links
- Beacon at the Life Lexicon
- 6P2.2 at Heinrich Koenig's Game of Life Object Catalogs
- Patterns
- Patterns with Catagolue frequency class 8
- Natural periodic objects
- Oscillators with 6 cells
- Periodic objects with minimum population 6
- Patterns with 6 cells
- Patterns found by John Conway
- Patterns found in 1970
- Patterns that can be constructed with 3 gliders
- Oscillators
- Beacon variants
- Babbling brooks
- Oscillators with period 2
- Oscillators with mod 2
- Oscillators with heat 2
- Oscillators with volatility 0.25
- Oscillators with strict volatility 0.25
- Oscillators with rotor Diagonal on-off
- Patterns with rectangular diagonal symmetry
- Eaters