Lightweight spaceship
Lightweight Spaceship | |||||||
View animated image | |||||||
View static image | |||||||
Pattern type | Spaceship | ||||||
---|---|---|---|---|---|---|---|
Family | XWSS | ||||||
Number of cells | 9 | ||||||
Bounding box | 5 × 4 | ||||||
Direction | Orthogonal | ||||||
Period | 4 | ||||||
Mod | 2 | ||||||
Speed | c/2 | Unknown | ||||||
Heat | 11 | ||||||
Discovered by | John Conway | ||||||
Year of discovery | 1970 | ||||||
| |||||||
| |||||||
|
The lightweight spaceship (commonly abbreviated to LWSS) or (rarely) small fish[1] is the smallest orthogonal spaceship, and the second most common spaceship after the glider. It moves at speed c/2 and has period 4. It was found by John Conway in 1970.
Commonness
Random soups investigated by Achim Flammenkamp emitted one LWSS for approximately every 615 gliders.[2] The LWSS is also the eighteenth most common object on Adam P. Goucher's Catagolue.[3]
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.
- ↑ Adam P. Goucher. "Statistics". Catagolue. Retrieved on June 24, 2016.
External links
- The Lightweight Spaceship (glider 1062) at David Eppstein's Glider Database
- The 1 nine-bit spaceship at Mark D. Niemiec's Life Page
- 9P4H2V0.1 at Heinrich Koenig's Game of Life Object Catalogs
- 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
- XWSS variants
- Spaceships with mod 2
- Glide symmetric spaceships