Coe ship: Difference between revisions
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The '''Coe ship''' is the first known [[period]]-16 [[c/2 orthogonal]] [[spaceship]], discovered by [[Tim Coe]] on October 26, {{year|1995}}.<ref>{{cite web|url=http://www.radicaleye.com/lifepage/patterns/p16/p16.html|title=Tim Coe's p16 puffer engine|author=Paul Callahan|work=Paul Callahan's Page of Conway's Life Miscellany|date=November 13, 1995|accessdate=November 9, 2020}}</ref> It consists of a [[lightweight spaceship]] stabilizing a [[spark]]y, modified [[heavyweight spaceship]]. | The '''Coe ship''' is the first known [[period]]-16 [[c/2 orthogonal]] [[spaceship]], discovered by [[Tim Coe]] on October 26, {{year|1995}}.<ref name="radicaleye">{{cite web|url=http://www.radicaleye.com/lifepage/patterns/p16/p16.html|title=Tim Coe's p16 puffer engine|author=Paul Callahan|work=Paul Callahan's Page of Conway's Life Miscellany|date=November 13, 1995|accessdate=November 9, 2020}}</ref> It consists of a [[lightweight spaceship]] stabilizing a [[spark]]y, modified [[heavyweight spaceship]]. | ||
The Coe ship appeared in an asymmetric [[soup]] found by [[apgsearch]] in December 2015,<ref name="post26242" /> making it the first [[natural]]ly occurring non-period-4 spaceship. A second Coe ship appeared on [[Catagolue]] in June 2016, and four more shortly after. Currently it is the 35th most common naturally occurring spaceship, being more common than HWSS on HWSS 8, but less common than MWSS on HWSS 13.<ref>{{CiteCatagolueStats|accessdate=July 4, 2019}}</ref> | The Coe ship appeared in an asymmetric [[soup]] found by [[apgsearch]] in December 2015,<ref name="post26242" /> making it the first [[natural]]ly occurring non-period-4 spaceship. A second Coe ship appeared on [[Catagolue]] in June 2016, and four more shortly after. Currently it is the 35th most common naturally occurring spaceship, being more common than HWSS on HWSS 8, but less common than MWSS on HWSS 13.<ref>{{CiteCatagolueStats|accessdate=July 4, 2019}}</ref> | ||
[[Mark Niemiec]] found a {{gliders|9}} [[synthesis]] of this spaceship on October 28, 1995.<ref name="radicaleye" /> A {{gliders|7|brief}}-glider synthesis was discovered by [[2718281828]] on December 8, {{year|2017}}.<ref name="post53496" /> | |||
The Coe ship can be used as a [[puffer engine]] because it produces a long back spark, which leads to [[puffer]]s and [[rake]]s, as shown below.<ref>{{CiteSummersPattern|accessdate=March 24, 2016}}</ref> | The Coe ship can be used as a [[puffer engine]] because it produces a long back spark, which leads to [[puffer]]s and [[rake]]s, as shown below.<ref>{{CiteSummersPattern|accessdate=March 24, 2016}}</ref> | ||
Revision as of 12:38, 9 November 2020
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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 | ||||||||
| Kinetic symmetry | Unspecified | ||||||||
| Discovered by | Tim Coe | ||||||||
| Year of discovery | 1995 | ||||||||
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The Coe ship is the first known period-16 c/2 orthogonal spaceship, discovered by Tim Coe on October 26, 1995.[1] It consists of a lightweight spaceship stabilizing a sparky, modified heavyweight spaceship.
The Coe ship appeared in an asymmetric soup found by apgsearch in December 2015,[2] making it the first naturally occurring non-period-4 spaceship. A second Coe ship appeared on Catagolue in June 2016, and four more shortly after. Currently it is the 35th most common naturally occurring spaceship, being more common than HWSS on HWSS 8, but less common than MWSS on HWSS 13.[3]
Mark Niemiec found a 9-glider synthesis of this spaceship on October 28, 1995.[1] A 7-glider synthesis was discovered by 2718281828 on December 8, 2017.[4]
The Coe ship can be used as a puffer engine because it produces a long back spark, which leads to puffers and rakes, as shown below.[5]
Gallery
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See also
References
- ↑ 1.0 1.1 Paul Callahan (November 13, 1995). "Tim Coe's p16 puffer engine". Paul Callahan's Page of Conway's Life Miscellany. Retrieved on November 9, 2020.
- ↑ Apple Bottom (December 27, 2015). Re: Soup search results (discussion thread) at the ConwayLife.com forums
- ↑ Adam P. Goucher. "Statistics". Catagolue. Retrieved on July 4, 2019.
- ↑ 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
Categories:
- 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