RNE-19T84
RNE-19T84 is a converter that accepts an input R-pentomino and produces a glider heading northeast (if the R-pentomino is in standard orientation as shown in the infobox at right).
| RNE-19T84 | |||||||
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| View static image | |||||||
| Pattern type | Conduit | ||||||
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| Conduit type | Converter | ||||||
| Input | R-pentomino | ||||||
| Output | Glider | ||||||
| Number of cells | 44 | ||||||
| Spartan? | No | ||||||
| Discovered by | Stephen Silver | ||||||
| Year of discovery | 1998 | ||||||
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This converter has several common uses. Paul Callahan pointed out on October 29, 1997 that the beehive-and-eater constellation can be attached to the L156 Herschel conduit to change it into a useful period doubler. On November 11, 1998, Stephen Silver removed the Herschel output from the period-doubling L156 to produce a Herschel-to-glider converter:
| <html><div class="rle"><div class="codebox"><div style="display:none;"><code></html>x = 42, y = 30, rule = B3/S23
32bo$30b3o$29bo$18bo10b2o$17bobo$17bobo$15b3ob2o20bo$14bo24b3o$8bo6b3o
b2o17bo$8b3o6bob2o17b2o$11bo$10b2o$35b2o$34bo2bo$35b2o4$9bo$9bobo$9b3o
$11bo11b2o$23bo$24b3o$26bo2$2b2o$3bo$3o$o!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
#C [[ AUTOSTART THUMBSIZE 2 ZOOM 10 HEIGHT 400 GPS 20 PAUSE 2 LOOP 160 ]]<html></code></div></div><canvas width="200" height="300" style="margin-left:1px;"><noscript></html> Please enable Javascript to view this LifeViewer. <html></noscript></canvas></div></html> |
| (click above to open LifeViewer) RLE: here Plaintext: here |
By removing one eater 1 and adding a BFx59H, it is possible to make a semi-L156 that produces 3 spare gliders.
The above H-to-2G mechanism is often used as a splitter, or as a quasi-edge shooter if the additional glider output is suppressed. It appears in many places in the glider gun collection, mainly for periods below 78 where syringes can't be used to build small true-period guns. The insertion reaction allows a glider to be placed 19 ticks in front of another glider on the same lane, or 30 ticks behind it. The 30-tick following distance can be reduced to 28 ticks if the perpendicular glider output is suppressed.