Fx158

Fx158
x = 30, y = 30, rule = B3/S23 9bo4b2o$8bobo2bobo7b2o$7bo2b4o9bo$7bobo4bo6bobo$5b3ob2o2b2o6b2o$4bo$bo 2b4ob2o$b3o3bob2o$4bo$3b2o7$29bo$27b3o$27bo$27bo$o$obo$3o$2bo2$15b2o$ 9b2o4bobo$10bo6bo$7b3o7b2o$7bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ ZOOM 12 GPS 20 LOOP 159 PAUSE 2 T 158 PAUSE 2 WIDTH 480 HEIGHT 480 THUMBSIZE 2 ]]
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Pattern type	Conduit
Conduit type	Elementary
Input	Herschel
Number of cells	67
Bounding box	24 × 30
Output orientation	Unturned, flipped
Output offset	(27, -5)
Step	158 ticks
Recovery time (ignoring FNG if any)	176 ticks
Minimum overclock period (ignoring FNG if any)	Unknown
Spartan?	No
Dependent?	No
Discovered by	David Buckingham
Year of discovery	1996
Rules Outer-totalistic rules B3/S23 only # of rules 20 = 1 Isotropic rules B3/S23 – B34e/S234c
Pattern files Plaintext fx158.cells RLE fx158.rle

Not to be confused with Fx153.

Fx158 is an elementary conduit, one of the original sixteen Herschel conduits, discovered by Dave Buckingham on July 7, 1996. After 158 ticks, it produces an inverted Herschel at (27, -5) relative to the input. In the pattern shown in the infobox, a ghost Herschel marks the output location.

It is the only known small conduit that does not produce its output Herschel via the usual Herschel great-grandparent, so it cannot be followed by a dependent conduit that uses the transparent block reaction, R49 or NW-2T16. Attempting to put a block there will just cause the block to be eaten. On the other hand, when followed by an independent conduit, the first natural glider has to travel back and be absorbed by the large welded eater, leading to a recovery time of 176 ticks.

By suppressing the active region early, it is possible to release the temporary glider labelled NE2T56.

External links

• Fx158 at the Life Lexicon
• Buckingham on B-heptominos in oscillators at Paul Callahan's Page of Conway's Life Miscellany