Noah's ark
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| Noah's ark | |||||||||
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| Pattern type | Puffer | ||||||||
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| Number of cells | 16 | ||||||||
| Bounding box | 15 × 15 | ||||||||
| Direction | Diagonal | ||||||||
| Period | 1344 | ||||||||
| Speed | c/12 | ||||||||
| Discovered by | Charles Corderman | ||||||||
| Year of discovery | 1971 | ||||||||
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Noah's ark is a diagonal puffer that was found by Charles Corderman in 1971.[1] It consists of two mutually stabilizing switch engines and is thus an ark. Its name comes from the variety of objects it leaves behind - in particular, every 1344 generations it produces 42 blocks, 40 blinkers, 22 beehives, eight loaves, four gliders, two boats, two block on tables, two long boats, two ships, and one beacon.
A 3-glider synthesis of a switch engine discovered by Luka Okanishi in March 2017 allowed for a 6-glider synthesis of Noah's ark.
Gallery
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Occurrence
Noah's ark appeared in the b3s23/G1 census on Catagolue on March 11, 2021, and later appeared in the b3s23/C1 census on May 22, 2021.
References
- ↑ Robert Wainwright (December 1971). Lifeline, vol 4, page 3.
External links
- Noah's ark at the Life Lexicon
- Noah's ark at Adam P. Goucher's Catagolue (linear growth)
- Noah's ark at Wikipedia (name origin)
Categories:
- Patterns
- Patterns with 16 cells
- Patterns found by Charles Corderman
- Patterns found in 1971
- Patterns that can be constructed with 6 gliders
- Outer-totalistically endemic patterns
- Isotropically endemic patterns
- Linear growth
- Infinite growth
- Puffers
- Diagonal puffers
- Puffers with period 1344
- Puffers with speed c/12
- Patterns with bilateral diagonal symmetry
- Natural periodic objects
- Patterns involving switch engines