Difference between revisions of "17c/45 reaction"

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(Rudimentary viewerconfig; on-wiki RLE snippet should probably be edited or replaced.)
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|name        = 17c/45 reaction
|name        = 17c/45 reaction
|pname        = 17c45reaction
|pname        = 17c45reaction
|d        = Orthogonal
|s            = 17c/45
|v=              Blinker
|bx          = 33
|bx          = 33
|by          = 28
|by          = 28
|s            = 17c/45
|d            = Orthogonal
|v            = Blinker
|rulemin      = B3/S23
|rulemin      = B3/S23
|rulemax      = B38/S23
|rulemax      = B38/S23
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|rle          = true
|rle          = true
|animated    = true
|animated    = true
|viewerconfig = #C [[ TRACKLOOP 45 0 -17/45 GPS 15 THUMBSIZE 2 ]]
}}
}}
The '''17c/45 reaction''' is a reaction in which a [[pi-heptomino]] moves forward 17 cells in the course of 45 generations while the [[blinker]] moves back 6 cells and is rephased. This reaction has been known for many years, but it was only in September [[:Category:Patterns found in 2002|2002]] that [[:Category:Patterns found by David Bell|David Bell]] suggested that it could be used to build a 17c/45 spaceship, based on a reaction he had found in which pis crawling along two lines of blinkers interact to emit a glider every 45 generations. [[:Category:Patterns found by Gabriel Nivasch|Gabriel Nivasch]] explicitly constructed the first [[caterpillar|17c/45 spaceship]] using this reaction on December 31, [[:Category:Patterns found in 2004|2004]].
The '''17c/45 reaction''' is a reaction in which a [[pi-heptomino]] moves forward 17 cells in the course of 45 generations while the [[blinker]] moves back 6 cells and is rephased. This reaction has been known for many years, but it was only in September [[:Category:Patterns found in 2002|2002]] that [[:Category:Patterns found by David Bell|David Bell]] suggested that it could be used to build a 17c/45 spaceship, based on a reaction he had found in which pis crawling along two lines of blinkers interact to emit a glider every 45 generations. [[:Category:Patterns found by Gabriel Nivasch|Gabriel Nivasch]] explicitly constructed the first [[caterpillar|17c/45 spaceship]] using this reaction on December 31, [[:Category:Patterns found in 2004|2004]].

Revision as of 13:57, 21 February 2018

17c/45 reaction
x = 29, y = 55, rule = B3/S23 14bo$14bo$14bo16$13b3o13$14bo$13b3o$12b2ob2o4$14bo$12bo3bo$10bo7bo$10b o7bo$10b2ob3ob2o4$3b2o4b2o7b2o4b2o$3bobob2o11b2obobo$6b2o5bobo5b2o$8b 2o3bobo3b2o$bo7b2o7b2o7bo$2o6bo4bobo4bo6b2o$o7b2o3bobo3b2o7bo$bobo8bo 3bo8bobo$bo2bo19bo2bo$2b2o21b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ TRACKLOOP 45 0 -17/45 GPS 15 THUMBSIZE 2 ]]
Pattern type Crawler
Bounding box 33 × 28
Speed 17c/45
Direction Orthogonal
Crawls on Blinker
Discovered by Unknown
Year of discovery Unknown

The 17c/45 reaction is a reaction in which a pi-heptomino moves forward 17 cells in the course of 45 generations while the blinker moves back 6 cells and is rephased. This reaction has been known for many years, but it was only in September 2002 that David Bell suggested that it could be used to build a 17c/45 spaceship, based on a reaction he had found in which pis crawling along two lines of blinkers interact to emit a glider every 45 generations. Gabriel Nivasch explicitly constructed the first 17c/45 spaceship using this reaction on December 31, 2004.

Similar glider-emitting interactions were later found by Gabriel Nivasch and Jason Summers. The basic idea of the design is that streams of gliders created in this way can be used to construct fleets of standard spaceships which are used to carry gliders to the front of the blinker trails, where they can be used to build more blinkers.

See also

External links