4-engine Cordership: Difference between revisions
Jump to navigation
Jump to search
AforAmpere (talk | contribs) 2-engine |
Added animation for Michael Simkin's extensible Corderships |
||
| Line 27: | Line 27: | ||
In November 2014 Michael Simkin discovered an alternate 4-engine Cordership, with temporally independent front and back halves -- the last two switch engines can be delayed by any number of ticks relative to the front.<ref>{{cite web|url=http://www.conwaylife.com/forums/viewtopic.php?f=2&t=1492#p14135|title=Four engine extendable Cordership|author=Michael Simkin|date=November 5, 2014 |accessdate=April 21, 2017}}</ref> | In November 2014 Michael Simkin discovered an alternate 4-engine Cordership, with temporally independent front and back halves -- the last two switch engines can be delayed by any number of ticks relative to the front.<ref>{{cite web|url=http://www.conwaylife.com/forums/viewtopic.php?f=2&t=1492#p14135|title=Four engine extendable Cordership|author=Michael Simkin|date=November 5, 2014 |accessdate=April 21, 2017}}</ref> | ||
{{EmbedViewer | |||
|viewerconfig = #C [[ AUTOSTART GPS 15 Y -10 Z 2.5 THUMBLAUNCH THUMBSIZE 2 THEME 6 WIDTH 800 HEIGHT 400 POPUPWIDTH 800 POPUPHEIGHT 400 TRACKLOOP 96 -1/12 -1/12 ]] | |||
|pname = 4enginecorderships | |||
|position = center | |||
|caption = Two versions of Michael Simkin's extensible 4-engine Cordership<br /> | |||
}} | |||
==Image gallery== | ==Image gallery== | ||
{| | {| | ||
Revision as of 15:00, 15 September 2018
| 4-engine Cordership | |||||||||
| View static image | |||||||||
| Pattern type | Spaceship | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Family | Cordership | ||||||||
| Number of cells | 134 | ||||||||
| Bounding box | 76 × 76 | ||||||||
| Direction | Diagonal | ||||||||
| Period | 96 (mod: 96) | ||||||||
| Speed | c/12 | Unknown | ||||||||
| Heat | 178.0 | ||||||||
| Kinetic symmetry | Unspecified | ||||||||
| Discovered by | David Bell | ||||||||
| Year of discovery | 2005 | ||||||||
| |||||||||
| |||||||||
| |||||||||
The 4-engine Cordership is a diagonal c/12 spaceship that was discovered by David Bell on July 9, 2005. It is the second smallest known Cordership in terms of its minimum population of 134 cells, superseded by the 2-engine Cordership. David Bell used this spaceship to create a small sawtooth, sawtooth 260.[1]
A slight modification of this Cordership that is asymmetric, with a minimum population of 136 cells, is also quite well-known and displayed below.
In November 2014 Michael Simkin discovered an alternate 4-engine Cordership, with temporally independent front and back halves -- the last two switch engines can be delayed by any number of ticks relative to the front.[2]
| Two versions of Michael Simkin's extensible 4-engine Cordership (click above to open LifeViewer) RLE: here Plaintext: here |
Image gallery
 RLE: here |
See also
References
- ↑ Dave Greene (August 10, 2005). "New Sawtooth Patterns". Retrieved on April 21, 2017.
- ↑ Michael Simkin (November 5, 2014). "Four engine extendable Cordership". Retrieved on April 21, 2017.
External links
- 4-engine Cordership at Adam P. Goucher's Catagolue (extended)
Categories:
- Patterns
- Spaceships with between 130 and 139 cells
- Periodic objects with minimum population between 130 and 139
- Patterns with between 130 and 139 cells
- Patterns found by David Bell
- Patterns found in 2005
- Patterns that can be constructed with 14 gliders
- Spaceships
- Spaceships with period 96
- Diagonal spaceships
- Spaceships with speed c/12
- Spaceships with heat between 170 and 179
- Cordership variants
- Spaceships with mod 96