Difference between revisions of "Coe ship"
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Despite its small size, it never appeared in a [[soup]] until December 2015 when [[apgsearch]] was devised. By doing so, it became the first naturally occurring non-period-4 spaceship to occur in Life out of an asymmetric random starting pattern.<ref>{{citeCatagolue|page=census/b3s23/C1/xq16|title=Census|accessdate=March 3, 2016}}</ref> A second Coe ship appeared on [[Catagolue]] in June 2016, and four more shortly after. | Despite its small size, it never appeared in a [[soup]] until December 2015 when [[apgsearch]] was devised. By doing so, it became the first naturally occurring non-period-4 spaceship to occur in Life out of an asymmetric random starting pattern.<ref>{{citeCatagolue|page=census/b3s23/C1/xq16|title=Census|accessdate=March 3, 2016}}</ref> A second Coe ship appeared on [[Catagolue]] in June 2016, and four more shortly after. | ||
A {{gliders|7}} [[glider synthesis|synthesis]] was discovered by [[2718281828]] on December 8, {{year|2017}}.<ref name="post53496" /> | |||
==Gallery== | ==Gallery== | ||
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==References== | ==References== | ||
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<ref name="post53496">{{LinkForumThread | |||
|format = ref | |||
|title = Re: Small Spaceship Syntheses | |||
|p = 53496 | |||
|author = 2718281828 | |||
|date = December 8, 2017 | |||
}}</ref> | |||
</references> | </references> | ||
Revision as of 19:36, 6 May 2019
| Coe ship | |||||||||
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| Pattern type | Puffer engine Spaceship | ||||||||
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| Number of cells | 28 | ||||||||
| Bounding box | 17 × 12 | ||||||||
| Frequency class | 43.4 | ||||||||
| Direction | Orthogonal | ||||||||
| Period | 16 | ||||||||
| Mod | 16 | ||||||||
| Speed | c/2 | 8c/16 | ||||||||
| Heat | 38.0 | ||||||||
| Discovered by | Tim Coe | ||||||||
| Year of discovery | 1995 | ||||||||
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The Coe ship is the first period-16 c/2 orthogonal spaceship to be discovered; by Tim Coe in October 1995. It works as a puffer engine because it produces a long spark behind it as it moves. It consists of a lightweight spaceship pulling a heavyweight spaceship that is modified to give the big tail spark.
If nontrivial flotillae are not counted, then Coe ship is the fifth most common naturally occurring spaceship, appearing once per 171,000,000 heavyweight spaceships.
Despite its small size, it never appeared in a soup until December 2015 when apgsearch was devised. By doing so, it became the first naturally occurring non-period-4 spaceship to occur in Life out of an asymmetric random starting pattern.[1] A second Coe ship appeared on Catagolue in June 2016, and four more shortly after.
A 7-glider synthesis was discovered by 2718281828 on December 8, 2017.[2]
Gallery
The Coe ship can be used in various ways to create puffers and rakes.[3]
 Coe ship powering a backward rake |
 Coe ship powering a forward rake |
 Coe ship powering a block puffer |
See also
References
- ↑ Adam P. Goucher. "Census". Catagolue. Retrieved on March 3, 2016.
- ↑ 2718281828 (December 8, 2017). Re: Small Spaceship Syntheses (discussion thread) at the ConwayLife.com forums
- ↑ Jason Summers' pattern collections. Retrieved on March 24, 2016.
External links
- Coe ship at the Life Lexicon
- 28P16H8V0.1 at Heinrich Koenig's Game of Life Object Catalogs
- The Coe Ship (glider 9152) at David Eppstein's Glider Database
- Patterns
- Patterns with Catagolue frequency class 43
- Natural periodic objects
- Spaceships with 28 cells
- Periodic objects with minimum population 28
- Patterns with 28 cells
- Patterns found by Tim Coe
- Patterns found in 1995
- Patterns that can be constructed with 7 gliders
- Spaceships
- Puffer engines
- Spaceships with period 16
- Orthogonal spaceships
- Spaceships with speed c/2
- Spaceships with unsimplified speed 8c/16
- Spaceships with heat 38
- Spaceships with mod 16
- Smoking ships