Pseudo-barberpole
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| Pseudo-barberpole | |||||||||
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| Pattern type | Oscillator | ||||||||
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| Number of cells | 15 | ||||||||
| Bounding box | 12 × 12 | ||||||||
| Period | 5 (mod: Unknown) | ||||||||
| Heat | 16.8 | ||||||||
| Volatility | 0.82 | 0.82 | ||||||||
| Kinetic symmetry | Unspecified | ||||||||
| Discovered by | Achim Flammenkamp | ||||||||
| Year of discovery | 1994 | ||||||||
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The pseudo-barberpole (or Achim's p5) is a period 5 oscillator that was found by Achim Flammenkamp on August 22, 1994.[1] With a minimum population of 15 cells, it is the smallest known period 5 oscillator, followed by octagon 2 with 16 cells.[2][3] On October 23, 2002 Gabriel Nivasch found a period 5 oscillator that consists of four radially symmetrically arranged halves of the pseudo-barberpole.[4]
Image gallery
See also
References
- ↑ Dean Hickerson's oscillator stamp collection.
- ↑ Mark Niemiec (1998). "Life Period-5 Oscillators". Retrieved on February 15, 2009.
- ↑ "Class 2 Objects Catalog". Retrieved on March 14, 2009.
- ↑ Jason Summers' all-osc pattern collection.
External links
- Pseudo-barberpole at the Life Lexicon
Categories:
- Patterns
- Oscillators with 15 cells
- Periodic objects with minimum population 15
- Patterns with 15 cells
- Patterns found by Achim Flammenkamp
- Patterns found in 1994
- Patterns that can be constructed with 28 gliders
- Oscillators
- Oscillators with period 5
- Oscillators with heat 16
- Oscillators with volatility 0.82
- Oscillators with strict volatility 0.82
- Patterns with bilateral diagonal symmetry