Beacon: Difference between revisions
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Revision as of 01:32, 3 December 2020
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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 | 0.25 | ||||||||
| Kinetic symmetry | Unspecified | ||||||||
| 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.[1]
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.[2]
The beacon is the third most common oscillator in Achim Flammenkamp's census (after the blinker and toad).[3] It is also the thirteenth most common object on Adam P. Goucher's Catagolue.[4]
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
- ↑ Dean Hickerson's oscillator stamp collection. Retrieved on March 14, 2020.
- ↑ 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