Difference between revisions of "Lightweight spaceship"
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{{Spaceship|name=Lightweight | {{Spaceship | ||
The '''lightweight spaceship''' ( | |name = Lightweight spaceship | ||
|pname = lwss | |||
|family = XWSS | |||
|c = 9 | |||
|bx = 5 | |||
|by = 4 | |||
|fc = 11.2 | |||
|dir = Orthogonal | |||
|p = 4 | |||
|m = 2 | |||
|s = c/2 | |||
|z = 2c/4 | |||
|h = 11 | |||
|discoverer = John Conway | |||
|discoveryear = 1970 | |||
|rulemin = B3/S23 | |||
|rulemax = B3468/S2378 | |||
|rulespecial = [[Conway's Game of Life|Conway Life]], [[HighLife]] | |||
|isorulemin = B3aij/S2eik3aijnr | |||
|isorulemax = B2kn345-a67e8/S1e234-aw5-jy6-kn78 | |||
|synthesis = 3 | |||
|synthesisRLE = true | |||
|plaintext = true | |||
|rle = true | |||
|animated = true | |||
|viewerconfig = #C [[ TRACKLOOP 4 -1/2 0 THUMBSIZE 2 GPS 4 ]] | |||
|apgcode = xq4_6frc | |||
|pentadecathlonid = 9P4H2V0.1 | |||
|eppsteinid = 1062 | |||
}} | |||
The '''lightweight spaceship''' (commonly abbreviated to '''LWSS''') or (rarely) '''small fish'''<ref>{{CiteLexicon|file=lex_s.htm#smallfish|name=Small fish|accessdate=June 10, 2009}}</ref> is the smallest orthogonal [[spaceship]], and the second most common spaceship after the [[glider]]. It moves at speed [[c/2 orthogonal|c/2]] and has [[period]] [[:Category:Spaceships with period 4|4]] (and is therefore often referred to as 2c/4). It was found by [[John Conway]] in [[:Category:Patterns found in 1970|1970]]. | |||
==[[List of common spaceships|Commonness]]== | |||
Random soups investigated by Achim Flammenkamp emitted one LWSS for approximately every 615 gliders.<ref>{{cite web|url=http://wwwhomes.uni-bielefeld.de/achim/moving.html |title=Spontaneous appeared Spaceships out of Random Dust |publisher=Achim Flammenkamp |date=December 9, 1995|accessdate=August 18, 2011}}</ref> The LWSS is also the eighteenth most common object on [[Adam P. Goucher]]'s [[Catagolue]].<ref>{{citeCatagolueStats|June 24, 2016}}</ref> | |||
==Tagalong== | |||
In April [[:Category:Patterns found in 1992|1992]], [[David Bell]] found a [[tagalong]] for two lightweight spaceships (or two [[middleweight spaceship]]s or two [[heavyweight spaceship]]s). 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. | |||
[[Image:LWSS_tagalong.png|framed|center|Tagalong for two lightweight spaceships<br />{{JavaRLE|lwsstagalong}}<br />{{LinkCatagolue|xq4_8oxvvmxmvvxo8z03b0baksxskab0b3zw224rq8ccc8qr422zy369896zy0uhg9x9ghu|style=brief}}]] | |||
==See also== | ==See also== | ||
*[[Fake xWSS]] | |||
*[[Middleweight spaceship]] | |||
*[[Heavyweight spaceship]] | *[[Heavyweight spaceship]] | ||
*[[Lightweight emulator]] | |||
*[[Toaster]] | |||
*[[Infinite LWSS hotel]] | *[[Infinite LWSS hotel]] | ||
==References== | ==References== | ||
Line 12: | Line 53: | ||
==External links== | ==External links== | ||
{{LinkWeisstein|LightweightSpaceship.html}} | {{LinkWeisstein|LightweightSpaceship.html}} | ||
{{LinkLexicon|lex_l.htm#lwss}} | {{LinkLexicon|lex_l.htm#lwss|name=LWSS}} | ||
{{LinkEppstein|1062|patternname=The Lightweight Spaceship (glider 1062)}} | |||
{{LinkCatagolue|xq4_6frc}} | |||
{{LinkNiemiec|ss.htm#ss-9|patternname=The 1 nine-bit spaceship}} | |||
{{LinkPentadecathlonObject|9P4H2V0.1}} | |||
[[Category:Glide symmetric spaceships]] | [[Category:Glide symmetric spaceships]] |
Revision as of 21:38, 17 July 2019
Lightweight spaceship | |||||||||
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Pattern type | Spaceship | ||||||||
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Family | XWSS | ||||||||
Number of cells | 9 | ||||||||
Bounding box | 5 × 4 | ||||||||
Frequency class | 11.2 | ||||||||
Direction | Orthogonal | ||||||||
Period | 4 | ||||||||
Mod | 2 | ||||||||
Speed | c/2 | 2c/4 | ||||||||
Heat | 11 | ||||||||
Discovered by | John Conway | ||||||||
Year of discovery | 1970 | ||||||||
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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 (and is therefore often referred to as 2c/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
- Fake xWSS
- Middleweight spaceship
- Heavyweight spaceship
- Lightweight emulator
- Toaster
- Infinite LWSS hotel
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
- LWSS at the Life Lexicon
- 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
- Patterns with Catagolue frequency class 11
- Natural periodic objects
- 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 unsimplified speed 2c/4
- Spaceships with heat 11
- XWSS variants
- Spaceships with mod 2
- Glide symmetric spaceships