Difference between revisions of "Period-45 glider gun"

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{{Gun|p=45|name=Period-45 glider gun|pname=period45glidergun|c=147|bx=47|by=38|discoverer=Matthias Merzenich|discoveryear = 2010|nofile=true}}
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{{Gun
'''Period-45 glider gun''' is a [[Gun#True-period_guns|true period]] [[:Category:oscillators with period 45|45]] [[gun]] discovered by [[Matthias Merzenich]]. [[Adam P. Goucher]] and [[Dave Greene]] improved the gun.
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|name         = Period-45 glider gun
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|pname       = period45glidergun
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|c           = 147
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|bx           = 47
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|by           = 38
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|p            = 45
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|b            = 4
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|discoverer   = Matthias Merzenich
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|discoveryear = 2010
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|synthesis    = 40
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|synthesisRLE = true
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|plaintext    = true
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|rle          = true
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|viewerconfig = #C [[ ZOOM 6 AUTOSTART OFF ]]
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}}
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'''Period-45 glider gun''' is a [[Gun#True-period_guns|true period]] 45 [[gun]] discovered by [[Matthias Merzenich]] in {{year|2010}}, with improvements by [[Adam P. Goucher]] and [[Dave Greene]].<ref>{{cite web|url=http://www.conwaylife.com/forums/viewtopic.php?p=2228#p2228|title=Re: Pattern of the Year 2010 competition|author=Matthias Merzenich|date=April 29, 2010|accessdate=March 18, 2016}}</ref> It consists of an object hassled by [[pentadecathlon]]s.
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A further improvement by [[Tanner Jacobi]] in {{year|2015}}, replacing three of the pentadecathlons with custom still-lifes, is given on the right.<ref>{{cite web|url=http://www.conwaylife.com/forums/viewtopic.php?p=18647#p18647|title=Re: Execution of Old Guns by Variable-Speed Firing Squad|author=Tanner Jacobi|date=April 12, 2015|accessdate=March 18, 2016}}</ref> Using the glider-producing pentadecathlon reaction, the p45 gun can be 4-barrelled.
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[[Glider syntheses]] for the one-barrelled and four-barrelled versions of the original gun (costing {{gliders|46|brief}} and {{gliders|40|brief}} gliders respectively) were posted by [[Jeremy Tan]] on January 5, {{year|2020}}, in response to a less efficient synthesis by [[Entity Valkyrie]] using a different method.<ref name="post86964" />
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==Image gallery==
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{|
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|-
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|[[Image:Period45glidergun(original).png|framed|left|Original period 45 glider gun.]]
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|}
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==References==
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<references>
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<ref name="post86964">{{LinkForumThread
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|format = ref
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|title  = Re: Synthesising Oscillators
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|p      = 86964
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|author = Jeremy Tan
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|date  = January 5, 2020
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}}</ref>
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</references>
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==External links==
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{{LinkLexicon|lex_p.htm#p45gun}}

Latest revision as of 02:18, 6 January 2020

Period-45 glider gun
x = 48, y = 40, rule = B3/S23 15bo2bo2bo$15b7o2$15b7o$15bo2bo2bo6$16bo2bo$12b2o2bo2bo$12b2o2bo2bo7b 2o$27b2o4b2o3bo2bo3b2o$33b5o4b5o$33b2o3bo2bo3b2o$27b3o2$2ob2o$bobo23b 3o$bobo6b3o$2ob2o29bobo$bobo31b2o$bobo6b3o22bo$2ob2o2$11b2o$11b2o7bo2b o2b2o$20bo2bo2b2o$20bo2bo3$47bo$45bobo$46b2o$18bo2bo2bo$18b7o2$18b7o$ 18bo2bo2bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ ZOOM 6 AUTOSTART OFF ]]
Pattern type Gun
Number of cells 147
Bounding box 47×38
Period 45
Barrels 4
Discovered by Matthias Merzenich
Year of discovery 2010

Period-45 glider gun is a true period 45 gun discovered by Matthias Merzenich in 2010, with improvements by Adam P. Goucher and Dave Greene.[1] It consists of an object hassled by pentadecathlons.

A further improvement by Tanner Jacobi in 2015, replacing three of the pentadecathlons with custom still-lifes, is given on the right.[2] Using the glider-producing pentadecathlon reaction, the p45 gun can be 4-barrelled.

Glider syntheses for the one-barrelled and four-barrelled versions of the original gun (costing 46 and 40 gliders respectively) were posted by Jeremy Tan on January 5, 2020, in response to a less efficient synthesis by Entity Valkyrie using a different method.[3]

Image gallery

Original period 45 glider gun.

References

  1. Matthias Merzenich (April 29, 2010). "Re: Pattern of the Year 2010 competition". Retrieved on March 18, 2016.
  2. Tanner Jacobi (April 12, 2015). "Re: Execution of Old Guns by Variable-Speed Firing Squad". Retrieved on March 18, 2016.
  3. Jeremy Tan (January 5, 2020). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums

External links