Period-184 glider gun

Period-184 glider gun
x = 30, y = 30, rule = B3/S23 19bo$17b3o$16bo$16b2o$28bo$26b2o$28b2o$27bo5$20b2o$19bobo$19bo$19b2ob o$2b2o17b2o$bobo$bo$2o7$5bo$5bobo$4bobo$6bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ THUMBSIZE 2 HEIGHT 480 X 3 Y 3 Z 12 GPS 16 ]]
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Pattern type	Gun
Number of cells	36
Bounding box	30 × 30
Period	184
Barrels	2
Discovered by	David Buckingham
Year of discovery	1996
Rules Outer-totalistic rules B3/S23 – B3/S238 # of rules 21 = 2 Isotropic rules B3/S23 – B34c/S234c8
Glider synthesis Fewest gliders 13 Uploaded synthesis RLE p184gun_synth.rle
Pattern files Plaintext p184gun.cells RLE p184gun.rle

Period-184 glider gun is a true period 184 double-barrelled glider gun found by Dave Buckingham in July 1996. The engine in this gun is a Herschel descendant. Unlike previously discovered glider guns, the reaction flips on a diagonal so that both gliders travel in the same direction. This is the fourth smallest known gun by population, after the period-156 glider gun, Gosper glider gun and Simkin glider gun, and is the highest-period among them.

On June 11, 2019, Jeremy Tan found a 15-glider synthesis for a variant of this gun with stable supports, which was improved to 13 gliders on July 27, 2021.

184 is a multiple of 46, the period of the twin bees shuttle, so despite being small, some of the smallest guns with periods that are multiples of 184 do not use this mechanism.

Gallery

x = 35, y = 35, rule = B3/S23 19bo$17b3o$16bo$16b2o$28bo$26b2o$28b2o$27bo5$20b2o$19bobo$19bo$19b2ob o$2b2o17b2o$bobo$bo$2o31b2o$34bo$33bo$33b2o4$5bo$5bobo$4bobo$6bo4$19b ob2o$19b2obo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ HEIGHT 400 ZOOM 10 GPS 12 AUTOSTART ]] SKOP 368: period-184 glider gun with boat-bits (click above to open LifeViewer) RLE: here Plaintext: here

External links

• Period-184 glider gun at the Life Lexicon
• Capped period-184 glider gun at Adam P. Goucher's Catagolue