Difference between revisions of "Gosper glider gun"
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{{Gun | {{Gun | ||
|name = Gosper glider gun | |||
|pname = gosperglidergun | |||
|c = 36 | |||
|bx = 36 | |||
|by = 9 | |||
|p = 30 | |||
|b = 1 | |||
|discoverer = Bill Gosper | |||
|discoveryear = 1970 | |||
|rulemin = B3/S23 | |||
|rulemax = B38/S238 | |||
|rulespecial = [[Conway's Game of Life|Conway Life]] | |||
|synthesis = 8 | |||
|synthesisRLE = true | |||
|plaintext = true | |||
|rle = true | |||
|apgcode = yl30_1_5_74055a5f5e513fd2e62fb8d6117d3f03 | |||
|animated = true | |||
|viewerconfig = #C [[ THUMBSIZE 2 GPS 15 ]] | |||
}} | |||
The '''Gosper glider gun''' is the first known [[gun]], and indeed the first known finite pattern with unbounded growth, found by [[Bill Gosper]] in November {{year|1970}}.<ref>{{CiteHickersonOscillators|accessdate=March 14, 2020}}</ref> It consists of two [[queen bee shuttle|queen bee shuttles]] stabilized by two [[block|blocks]]. Its 36 cells remained the smallest size of any known gun until the discovery of the double-barreled [[Simkin glider gun]] in {{year|2015}} which overtook this record with only 29 cells. | |||
As the Gosper glider gun can be [[glider synthesis|constructed]] with only 8 gliders, it has the smallest known glider synthesis of any gun. It can be destroyed completely by 2 gliders, as shown below. | |||
==Trivia== | |||
* There are two other ways in which queen bees can interact to form gliders,<ref name="post8989" /> and a third queen bee can be used to reflect a glider and make a "pseudo-Gosper gun".<ref name="post9150" /> | |||
==Image gallery== | ==Image gallery== | ||
Line 14: | Line 37: | ||
==See also== | ==See also== | ||
*[[Bi-gun]] | * [[Bi-gun]] | ||
*[[Glider duplicator]] | * [[Glider duplicator]] | ||
*[[Mirage]] | * [[Inline inverter]] | ||
*[[New gun 1]] | * [[Mirage]] | ||
*[[New gun 2]] | * [[New gun 1]] | ||
* [[New gun 2]] | |||
==References== | ==References== | ||
<references /> | <references> | ||
<ref name="post8989">{{LinkForumThread | |||
|format = ref | |||
|title = Re: It´s not a Gosper Glider Gun ! | |||
|p = 8989 | |||
|author = Mark Niemiec | |||
|date = September 11, 2013 | |||
}}</ref> | |||
<ref name="post9150">{{LinkForumThread | |||
|format = ref | |||
|title = Re: It´s not a Gosper Glider Gun ! | |||
|p = 9150 | |||
|author = Tropylium | |||
|date = September 26, 2013 | |||
}}</ref> | |||
</references> | |||
==External links== | ==External links== | ||
{{LinkWeisstein|GosperGliderGun.html}} | {{LinkWeisstein|GosperGliderGun.html}} | ||
{{LinkLexicon|lex_g.htm#gosperglidergun}} | {{LinkLexicon|lex_g.htm#gosperglidergun}} | ||
{{LinkCatagolue|yl30_1_5_74055a5f5e513fd2e62fb8d6117d3f03|format=linear growth}} |
Revision as of 17:07, 14 March 2020
Gosper glider gun | |||||||||
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Pattern type | Gun | ||||||||
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Number of cells | 36 | ||||||||
Bounding box | 36 × 9 | ||||||||
Period | 30 | ||||||||
Barrels | 1 | ||||||||
Discovered by | Bill Gosper | ||||||||
Year of discovery | 1970 | ||||||||
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The Gosper glider gun is the first known gun, and indeed the first known finite pattern with unbounded growth, found by Bill Gosper in November 1970.[1] It consists of two queen bee shuttles stabilized by two blocks. Its 36 cells remained the smallest size of any known gun until the discovery of the double-barreled Simkin glider gun in 2015 which overtook this record with only 29 cells.
As the Gosper glider gun can be constructed with only 8 gliders, it has the smallest known glider synthesis of any gun. It can be destroyed completely by 2 gliders, as shown below.
Trivia
- There are two other ways in which queen bees can interact to form gliders,[2] and a third queen bee can be used to reflect a glider and make a "pseudo-Gosper gun".[3]
Image gallery
See also
References
- ↑ Dean Hickerson's oscillator stamp collection. Retrieved on March 14, 2020.
- ↑ Mark Niemiec (September 11, 2013). Re: It´s not a Gosper Glider Gun ! (discussion thread) at the ConwayLife.com forums
- ↑ Tropylium (September 26, 2013). Re: It´s not a Gosper Glider Gun ! (discussion thread) at the ConwayLife.com forums
External links
- Gosper glider gun at the Life Lexicon
- Gosper glider gun at Adam P. Goucher's Catagolue (linear growth)