Difference between revisions of "Waterbear"
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|by = 28010 | |by = 28010 | ||
|dir = Oblique | |dir = Oblique | ||
|slope = 23/5 | |||
|p = 158 | |p = 158 | ||
|m = 158 | |||
|s = (23,5)c/79 | |s = (23,5)c/79 | ||
|h = 160959.2 | |h = 160959.2 | ||
|discoverer = Brett Berger | |discoverer = Brett Berger | ||
|discoverer2 = Ivan Fomichev | |||
|discoveryear = 2014 | |discoveryear = 2014 | ||
|rulemin = B3/S23 | |rulemin = B3/S23 | ||
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|{{#ev:youtube|on3ZLLKQp-4|600|left|A demonstration of the spaceship in motion}} | |{{#ev:youtube|on3ZLLKQp-4|600|left|A demonstration of the spaceship in motion}} | ||
|} | |} | ||
== See also == | == See also == | ||
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<references/> | <references/> | ||
[[Category:Engineered spaceships]] | [[Category:Engineered spaceships]] | ||
Revision as of 11:11, 18 July 2017
| Waterbear | |||||||
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| View static image | |||||||
| Pattern type | Spaceship | ||||||
|---|---|---|---|---|---|---|---|
| Number of cells | 197896 | ||||||
| Bounding box | 13295 × 28010 | ||||||
| Direction | Oblique | ||||||
| Slope | 23/5 | ||||||
| Period | 158 | ||||||
| Mod | 158 | ||||||
| Speed | (23,5)c/79 | Unknown | ||||||
| Heat | 160959.2 | ||||||
| Discovered by | Brett Berger Ivan Fomichev | ||||||
| Year of discovery | 2014 | ||||||
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Waterbear is an oblique spaceship constructed by Brett Berger on December 28, 2014.[1] It is the smallest (in terms of bounding box) known oblique spaceship, superseding parallel HBK. It is also the first discovered "fast" oblique spaceship in Conway's Game of Life.
The helix, fanout devices and syntheses for the helix were found by Ivan Fomichev.
Design
The base reaction consists of a crawler consisting of a Herschel running on a track of gliders. The Herschel consumes a southwest glider and emits two gliders, one southwest and the other southeast, every 79 generations. Interactions between neighboring tracks[2] are used to create the necessary components to recreate the helix.
In July 2013, Ivan Fomichev proposed a very rough blueprint for the spaceship giving the shape below.[3]
Being made from gliders, the track gradually moves away from the helix, giving rise to the triangular bodies. To prevent the ship from growing exponentially in size, the same procedure used to build the helix is used to "reset" the track. In the Waterbear design, this reset occurs at two points, resulting in three smaller triangles instead of one much larger one. The reset comes at the cost of a fair amount of output-suppressing cleanup, so the design balances the exponential growth and the constant cleanup cost to achieve a reasonably small final area.
Video
See also
References
- ↑ Brett Berger (December 28, 2014). "(23,5)c/79 knightship caterpillar complete!". Retrieved on December 28, 2014.
- ↑ Brett Berger (October 6, 2014). "(23,5)c/79 spaceship components". Retrieved on December 29, 2014.
- ↑ Ivan Fomichev (July 9, 2013). "(23,5)c/79 spaceship components". Retrieved on December 29, 2014.
- Patterns
- Spaceships with between 100,000 and 999,999 cells
- Periodic objects with minimum population between 100,000 and 999,999
- Patterns with between 100,000 and 999,999 cells
- Patterns found by Brett Berger
- Patterns found by Ivan Fomichev
- Patterns found in 2014
- Outer-totalistically endemic patterns
- Spaceships
- Spaceships with period 158
- Oblique spaceships
- Spaceships with slope 23/5
- Spaceships with speed (23,5)c/79
- Spaceships with heat between 100,000 and 999,999
- Spaceships with mod 158
- Engineered spaceships