Lightweight spaceship
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| Lightweight Spaceship | |||||||
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| Pattern type | Spaceship | ||||||
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| Number of cells | 9 | ||||||
| Bounding box | 5 × 5 | ||||||
| Direction | Orthogonal | ||||||
| Period | 4 (mod: Unknown) | ||||||
| Speed | c/2 | Unknown | ||||||
| Heat | 11 | ||||||
| Kinetic symmetry | Unspecified | ||||||
| Discovered by | John Conway | ||||||
| Year of discovery | 1970 | ||||||
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The lightweight spaceship (or LWSS for short or small fish[1]) is the smallest orthogonally moving spaceship, and the second most common spaceship (after the glider). Random soups will emit one LWSS for approximately every 615 gliders.[2] It moves orthogonally at c/2 and has period 4. It was found by John Conway in 1970. Interestingly, if two LWSS collide, they produce two gliders.
Tagalong
In April 1992, David Bell found a tagalong for two lightweight spaceships (or two middleweight spaceships or two heavyweight spaceships). It can be extended indefinitely by attaching it to the back of itself. Interestingly, a hivenudger with symmetric rear (that is, both rear spaceships being of same "weight") can pull this tagalong.
See also
References
- ↑ "Small fish". The Life Lexicon. Stephen Silver. Retrieved on June 10, 2009.
- ↑ "Spontaneous appeared Spaceships out of Random Dust". Achim Flammenkamp (December 9, 1995). Retrieved on August 18, 2011.
External links
Categories:
- Patterns
- Spaceships with 9 cells
- Periodic objects with minimum population 9
- Patterns with 9 cells
- Patterns found by John Conway
- Patterns found in 1970
- Patterns that can be constructed with 3 gliders
- Spaceships
- Spaceships with period 4
- Orthogonal spaceships
- Spaceships with speed c/2
- Spaceships with heat 11
- Glide symmetric spaceships