Gray counter
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| Gray counter | |||||||||||
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| View static image | |||||||||||
| Pattern type | Oscillator | ||||||||||
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| Oscillator type | Muttering moat | ||||||||||
| Billiard table | |||||||||||
| Number of cells | 26 | ||||||||||
| Bounding box | 13 × 9 | ||||||||||
| Period | 4 | ||||||||||
| Mod | 4 | ||||||||||
| Heat | 2 | ||||||||||
| Volatility | 0.13 | ||||||||||
| Strict volatility | 0.13 | ||||||||||
| Discovered by | Unknown | ||||||||||
| Year of discovery | 1971 | ||||||||||
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Gray counter is a period 4 oscillator that was found in 1971. The interior rotor simulates a cycle through the Gray codes from 0 to 3.
The 5-cell long sides of the main part of the stator require induction coils: the option with the smallest population (as well as the highest symmetry) uses two tubs as pictured. A smaller bounding box may be reached using snakes or bi-blocks.
See also
External links
- Gray code at Wikipedia
- Gray counter at the Life Lexicon
- 26P4.3 at Heinrich Koenig's Game of Life Object Catalogs
Categories:
- Patterns
- Oscillators with 26 cells
- Periodic objects with minimum population 26
- Patterns with 26 cells
- Patterns found in 1971
- Patterns that can be constructed with 30 gliders
- Oscillators
- Muttering moats
- Billiard tables
- Oscillators with period 4
- Oscillators with mod 4
- Oscillators with heat 2
- Oscillators with volatility 0.13
- Oscillators with strict volatility 0.13
- Patterns with rectangular orthogonal symmetry