Difference between revisions of "Glider-producing switch engine"

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|discoverer  = Charles Corderman
|discoverer  = Charles Corderman
|discoveryear = 1971
|discoveryear = 1971
|rulemin      = B3/S23
|rulemax      = B3/S23
|rulespecial  = [[Conway's Game of Life|Conway Life]]
|isorulemin  = B3/S23
|isorulemax  = B3/S23
|synthesis    = 4
|synthesis    = 4
|synthesisRLE = true
|synthesisRLE = true
|life105      = true
|life106      = true
|plaintext    = true
|plaintext    = true
|rle          = true
|rle          = true
|apgcode      = yl384_1_59_7aeb1999980c43b4945fb7fcdb023326
|animated    = true
|animated    = true
|viewerconfig = #C [[ TRACK -1/12 -1/12 THUMBSIZE 2 HEIGHT 480 Z 4 ]]
|viewerconfig = #C [[ TRACK -1/12 -1/12 THUMBSIZE 2 HEIGHT 480 Z 4 ]]
}}
}}
The '''glider-producing switch engine''' (or '''glider-making switch engine''') is a [[puffer]] that was found by [[:Category:Patterns found by Charles Corderman|Charles Corderman]] in the early 1970s. It consists of a [[switch engine]] reacting with [[block]]s to produce various [[still life]]s, several [[blinker]]s, and a [[glider]] every 384 [[generation]]s.
The '''glider-producing switch engine''' (or '''glider-making switch engine''') is a [[puffer]] that was found by [[Charles Corderman]] in the early 1970s. It consists of a [[switch engine]] reacting with [[block]]s to produce various [[still life]]s, several [[blinker]]s, and a [[glider]] every 384 [[generation]]s.


Because of its easy construction (see its predecessors below), it has appeared in some superlinear growth patterns including [[mosquito 3]].<ref>{{CiteLexicon|file=lex_m.htm#mosquito3|name=Mosquito 3|accessdate=June 1, 2009}}</ref>
Because of its easy construction (see its predecessors below), it has appeared in some superlinear growth patterns including [[mosquito 3]].


==Commonness==
==Commonness==
Line 28: Line 32:


==Time bomb==
==Time bomb==
The '''time bomb''' (shown below) is a 17-[[cell]] [[pattern]] that was found by [[Doug Petrie]] that evolves into a glider-producing switch engine.<ref>{{CiteLexicon|file=lex_t.htm#timebomb|name=Time bomb|accessdate=May 16, 2009}}</ref>
The '''time bomb''' is a 17-[[cell]] [[pattern]] found by Douglas G. Petrie that evolves into a glider-producing switch engine.<ref>{{CiteLifeline|vol=10|pages=page 3}}</ref><ref>{{CiteLexicon|file=lex_t.htm#timebomb|name=Time bomb|accessdate=May 16, 2009}}</ref>


==Synthesis==
==Synthesis==
Although clean synthesis of glider-producing switch engine requires 5 gliders, [[Michael Simkin]] has found very messy 3 gliders synthesis in 2014<ref>{{Cite web|url=http://www.conwaylife.com/forums/viewtopic.php?p=13988#p13988|title=3 gliders infinite growth|author=Michael Simkin}}</ref>. This is the only known three glider synthesis of any infinite growth pattern, and it has the minimal number of gliders possible for infinite growth.
Although a clean synthesis of the glider-producing switch engine requires 4 gliders, [[Michael Simkin]] found a 3-glider collision in October {{year|2014}} which includes the puffer in its [[ash]].<ref name="post13988" /> This collision has the minimum number of gliders necessary to exhibit infinite growth, and is the only known 3-glider collision to do so.


==Image gallery==
==Image gallery==
Line 37: Line 41:
|-
|-
|[[Image:Gliderproducingswitchengine_debris.png|thumb|231px|left|The debris left behind by the glider-producing switch engine]]
|[[Image:Gliderproducingswitchengine_debris.png|thumb|231px|left|The debris left behind by the glider-producing switch engine]]
|[[Image:Timebomb.png|framed|left|The time bomb is a predecessor of the glider-producing switch engine<br />{{JavaRLE|timebomb|brief}}]]
|[[Image:Timebomb.png|framed|left|The time bomb<br />{{JavaRLE|timebomb|brief}}]]
|[[Image:Gliderproducingswitchengine_pred.png|framed|left|Another simple [[predecessor]] of the glider-producing switch engine<br />{{JavaRLE|gliderproducingswitchenginepredecessor}}]]
|[[Image:Gliderproducingswitchengine_pred.png|framed|left|Another simple [[predecessor]] of the glider-producing switch engine<br />{{JavaRLE|gliderproducingswitchenginepredecessor}}]]
|}
|}


==References==
==References==
<references />
<references>
<ref name="post13988">{{LinkForumThread
|format = ref
|title  = Re: Making switch-engines
|p      = 13988
|author = Michael Simkin
|date  = October 24, 2014
}}</ref>
</references>


==External links==
==External links==
{{LinkLexicon|lex_s.htm#stabilizedswitchengine|name=Stabilized switch engine}}
{{LinkLexicon|lex_s.htm#stabilizedswitchengine|name=Stabilized switch engine}}
*[http://www.pentadecathlon.com/objects/class4/typeB/SwitchEngine1/switchEngine1.php Single switch engine puffer trains] at the Life Objects Catalog
*[http://www.pentadecathlon.com/objects/class4/typeB/SwitchEngine1/switchEngine1.php Single switch engine puffer trains] at the Life Objects Catalog
{{LinkCatagolue|yl384_1_59_7aeb1999980c43b4945fb7fcdb023326}}
{{LinkCatagolue|yl384_1_59_7aeb1999980c43b4945fb7fcdb023326|format=linear growth}}
 
__NOTOC__

Revision as of 20:05, 26 November 2020

Glider-producing switch engine
bo65b$bo65b$bo65b$5bo61b$b3o2bo60b$o4bo61b$o3bo62b$b3o63b$15b2o50b$13b 2o2bo49b$obo10b2o3bo48b$obo10b2o52b$obo64b$obo17bo46b$b2o14bo49b3$22bo 2bo41b$26bo40b$22bo10b2o32b$26bo6b2o32b$22b4o41b$21bo45b$22b2o43b$23bo 43b3$41b2o24b$41b2o24b3$13b2o52b$13b2o52b5$36b2o29b$36b3o9b2o17b$37bo 10bobo16b$49bo17b$33bo33b$27bo5bo33b$26bobo11b3o24b$26bo2bo9bob2o24b$ 16b2o9b2o10b2o26b$15bo2bo48b$15b2ob2o47b$18bobo46b$20b2o45b$17bo3bo45b $17bo2bo44b2o$18b3o44b2o3$54bo12b$53bobo11b$40bo12b2o12b$39bobo25b$39b 2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ TRACK -1/12 -1/12 THUMBSIZE 2 HEIGHT 480 Z 4 ]]
View animated image
View static image
Pattern type Puffer
Number of cells 123
Bounding box 67 × 60
Frequency class 21.0
Direction Diagonal
Period 384
Speed c/12
Discovered by Charles Corderman
Year of discovery 1971

The glider-producing switch engine (or glider-making switch engine) is a puffer that was found by Charles Corderman in the early 1970s. It consists of a switch engine reacting with blocks to produce various still lifes, several blinkers, and a glider every 384 generations.

Because of its easy construction (see its predecessors below), it has appeared in some superlinear growth patterns including mosquito 3.

Commonness

The glider-producing switch engine is the second most common naturally-occurring pattern that exhibits infinite growth, the most common being the block-laying switch engine. It is also the ninety-first most common object on Adam P. Goucher's Catagolue.[1]

Time bomb

The time bomb is a 17-cell pattern found by Douglas G. Petrie that evolves into a glider-producing switch engine.[2][3]

Synthesis

Although a clean synthesis of the glider-producing switch engine requires 4 gliders, Michael Simkin found a 3-glider collision in October 2014 which includes the puffer in its ash.[4] This collision has the minimum number of gliders necessary to exhibit infinite growth, and is the only known 3-glider collision to do so.

Image gallery

The debris left behind by the glider-producing switch engine
The time bomb
RLE: here
Another simple predecessor of the glider-producing switch engine
Download RLE: click here

References

  1. ↑ Adam P. Goucher. "Statistics". Catagolue. Retrieved on June 24, 2016.
  2. ↑ Robert Wainwright (June 1973). Lifeline, vol 10, page 3.
  3. ↑ "Time bomb". The Life Lexicon. Stephen Silver. Retrieved on May 16, 2009.
  4. ↑ Michael Simkin (October 24, 2014). Re: Making switch-engines (discussion thread) at the ConwayLife.com forums

External links


Retrieved from "https://conwaylife.com/w/index.php?title=Glider-producing_switch_engine&oldid=74982"