Ecologist
| Ecologist | |||||||||
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| Pattern type | Spaceship | ||||||||
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| Number of cells | 53 | ||||||||
| Bounding box | 27 × 18 | ||||||||
| Direction | Orthogonal | ||||||||
| Period | 20 (mod: 20) | ||||||||
| Speed | c/2 | 10c/20 | ||||||||
| Heat | 61.3 | ||||||||
| Kinetic symmetry | n | ||||||||
| Discovered by | Bill Gosper | ||||||||
| Year of discovery | 1971 | ||||||||
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The ecologist is a c/2 orthogonal period-20 spaceship that was described in Lifeline Volume 3.[1] It consists of the classic puffer 2 with another lightweight spaceship added to suppress the debris by turning it into a ghost Herschel.
Variants
The central puffer engine requires dot sparks in order to continue moving, and the debris behind requires another one for perturbation. The standard ecologist uses sparks from three lightweight spaceships, however the same spark can be provided by the upper, more distant spark of a middleweight spaceship instead.
If the front spaceship which the trailing spaceship follows is a middleweight spaceship, the trailing spaceship must also be a middleweight spaceship; a lightweight spaceship in this position would interact destructively with the front escort.
Explicit syntheses for higher and more complicated variants were provided on 31 May 2024.[2]
| Image | Cells | Supporting spaceships apgcode |
Synth. cost |
|---|---|---|---|
|
53 | top LWSS, back LWSS, bottom LWSS xq20_7911ax27de6zwsi0120goe4zgggg1022yaa983z34w5 |
12 |
|
56 | top LWSS, back MWSS, bottom LWSS xq20_0fh1iwok4sy0fh1iz0gy2oz3tvex4xoozy4s0ogzy4321 |
12 |
|
58 | top MWSS, back MWSS, bottom LWSS xq20_0sighgaw8smeeczy7ggzw79dx8a0431y7ggzsiggaye223 |
13 |
|
55 | top LWSS, back LWSS, bottom MWSS xq20_0sighgazy0g088yaai2ozw790g8013e4zsiggax8smec |
12 |
|
58 | top LWSS, back MWSS, bottom MWSS xq20_4eb76y1791h1azwgo4sy8gcccozx13y566x333z04eb776 |
12 |
|
60 | top MWSS, back MWSS, bottom MWSS xq20_27dee6ydoz0gocx4s88gy6107zw11y223gz4eqsscxe98885 |
13 |
See also
References
- ↑ Robert Wainwright (September 1971). Lifeline, vol 3, page 6.
- ↑ https://conwaylife.com/forums/viewtopic.php?f=2&t=1557&start=725#p186399
External links
- Ecologist at the Life Lexicon
- Ecologist at Adam P. Goucher's Catagolue
- 53P20H10V0.1 at Heinrich Koenig's Game of Life Object Catalogs
- Patterns
- Spaceships with 53 cells
- Periodic objects with minimum population 53
- Patterns with 53 cells
- Patterns found by Bill Gosper
- Patterns found in 1971
- Patterns that can be constructed with 12 gliders
- Spaceships
- Spaceships with period 20
- Orthogonal spaceships
- Spaceships with speed c/2
- Spaceships with unsimplified speed 10c/20
- Spaceships with heat 61
- Spaceships with mod 20
- Spaceships with n symmetry
- Smoking ships