Syringe
x = 41, y = 36, rule = B3/S23
2bo$obo$b2o10$25bo$23b3o$22bo$22b2o$7b2o$8bo$8bob2o$9bo2bo23bo$10b2o
24bo$25b2o9b3o$25b2o11bo4$34bo3b2o$33bobo3bo$32bobo3bo$28b2obobo3bo$
28b2obo2b4obo$32bobo3bobo$28b2ob2o2bo2bobo$29bobo2b2o3bo$17b2o10bobo$
17b2o11bo!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
#C [[ AUTOSTART ]]
#C [[ THUMBNAIL THUMBSIZE 3 ZOOM 15 X 4 Y 4 HEIGHT 540 GPS 20 AUTOSTART T 0 PAUSE 2 T 165 PAUSE 2 LOOP 166 ]]
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Pattern type
Conduit
Conduit type
Converter
Input
Glider
Output
Herschel
Number of cells
66
Bounding box
24 × 34
Step
Unknown
Recovery time (ignoring FNG if any)
78 ticks
Minimum overclock period (ignoring FNG if any)
74 ticks
Spartan ?
No
Discovered by
Tanner Jacobi
Year of discovery
2015
The syringe is a glider-to-Herschel converter discovered by Tanner Jacobi on March 19, 2015 .[1] It is composed of an eater 1 , two blocks , a beehive with tail , and a large welded still life that combines an eater 2 and an eater 5 (with several existing variants ). The syringe works by converting a bait block into a pi-heptomino , then hassling the pi into a B-heptomino that restores the bait block over the course of its evolution.
Its repeat time is 78, but it can be also overclocked to function with glider streams of period 74 or 75. Jeremy Tan coined the term 'syringe' to describe how it injects a glider into a Herschel system.[2] Attempting to overclock the syringe at the intermediate periods of 76 and 77 causes the block to become an LWSS or MWSS ; this immediately crashes into the beehive with tail so is of limited utility.[3]
The syringe allows much more compactness and timing versatility in signal circuitry than Herschel conduits alone, and in combination with the Snark , it can largely replace very long p1 Herschel tracks (if they are not required to be Spartan , and the dependent form is spartan) by simply passing a glider from somewhere near the start to somewhere near the destination. This works similarly to Herschel transmitters and receivers , but in more flexible way. Within 3 days of the syringe's discovery, over half of all known guns from periods 14 to 999 were obsoleted by loops involving a syringe and various Snarks.
If the bait block is removed, subsequent gliders entering the syringe will be cleanly consumed by the eater 2 . This was utilised by the 0E0P metacell in various places to act as a one-time valve, with the dependent form of the syringe.
The syringe was voted Pattern of the Year for 2015 on the ConwayLife.com forums.[4]
It has been superseded as the fastest known stable glider-to-Herschel converter by the non-Spartan speed tunnel , which has a minimum repeat time of 61.[5]
Dependent form
A variant of the syringe that replaces the welded eater 2 and eater 5 with a separate eater 2 and eater 1 was used in the Demonoid , a self-constructing spaceship. The eater 1 can only be made to fit if the syringe is followed by a dependent conduit . In rare cases where the following conduit does not allow any glider to escape at all (like the dependent beehive-producing H-to-MWSS conduit), only the eater 2 is required.
Unlike welded variants, this 'dependent syringe' is considered Spartan . It is most useful when attached to an Lx200 , as this gives the minimal recovery time of 90. Another commonly used device in Spartan constructions is a small glider duplicator known as Scorbie Splitter .
x = 59, y = 61, rule = B3/S23
46b2o$47bo$47b3o16$48b2o$48b2o2$55bob2o$55b2obo3$39bob2o$o38b2obo$b2o$
2o4$18bo$16b3o$15bo$15b2o$2o$bo$bob2o$2bo2bo23bo$3b2o24bo$18b2o9b3ob2o
$18b2o11bob2o5$57b2o$57b2o$21b2obo6b2o$21b2ob3o3bobo$27bo2bo$21b2ob3o
2b2o26b2o$22bobo32b2o$10b2o10bobo18b2o$10b2o11bo18bobo$42bo$41b2o8b2o$
51bo$52b3o$54bo!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
#C [[ THUMBSIZE 2 ZOOM 8 HEIGHT 600 GPS 48 T 0 PAUSE 1 T 137 PAUSE 1 T 340 PAUSE 1 LOOP 341 ]]
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Dependent syringe followed by Lx200 (click above to open LifeViewer ) RLE : here Plaintext : here
Variants
The eater 1 can be replaced by a snake -type catalyst[6] (or placed in any of two other possible orientations).
x = 50, y = 39, rule = B3/S23
9bo13bobo$9b3o11b2o$12bo11bo$11b2o3$2ob2o$2obo$3bo$3b3o4b2o$b2o3bo3b2o
$o2b4o$2obo15b2o2b2o$bo2b3o12bobo2bo$bo5bo13b2o$2b5o14bo$4bo18bo$22b2o
$48bo$8b2o37bobo$9bo37bobo$9bob2o35bo$10bo2bo23bo$11b2o24bo$26b2o9b3o$
26b2o11bo4$35bo3b2o$34bobo3bo$33bobo3bo$29b2obobo3bo$29b2obo2b4obo$33b
obo3bobo$29b2ob2o2bo2bobo$30bobo2b2o3bo$18b2o10bobo$18b2o11bo!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
#C [[ THUMBSIZE 2 ZOOM 8 HEIGHT 450 T 0 PAUSE 1 T 91 PAUSE 1 T 182 PAUSE 1 LOOP 270 ]]
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An alternative way to weld an input Snark to the syringe,[6] reducing population count by 5(click above to open LifeViewer ) RLE : here Plaintext : here
The large catalyst has several variants, which may be useful depending on the context:
x = 34, y = 24, rule = B3/S23
5bobo10bo$6b2o8b3o$6bo8bo$15b2o$2o$bo$bob2o$2bo2bo23bo$3b2o24bo$18b2o
9b3o$18b2o11bo4$27bo3b2o$26bobo3bo$25bobo3bo$21b2obobo3bo$21b2obo2b4ob
o$25bobo3bobo$21b2ob2o2bo2bobo$22bobo2b2o3bo$10b2o10bobo$10b2o11bo!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
#C [[ THUMBSIZE 2 ZOOM 10 HEIGHT 400 ]]
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Standard variant of the syringe catalyst, a glider synthesis is known[7] [8] [9] (click above to open LifeViewer ) Catagolue : here
x = 33, y = 25, rule = B3/S23
5bobo10bo$6b2o8b3o$6bo8bo$15b2o$2o$bo$bob2o$2bo2bo23bo$3b2o24bo$18b2o
9b3o$18b2o11bo5$26bo3b2o$25bobo3bo$21b2obobo3bo$21b2obo4bo$25b5obo$20b
ob3o5bobo$20b2o3b3o2bobo$10b2o11b2o2bo3bo$10b2o8b3obo$20bo!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
#C [[ THUMBSIZE 2 ZOOM 10 HEIGHT 400 ]]
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Another variant with a known glider synthesis[10] (click above to open LifeViewer ) Catagolue : here
x = 32, y = 24, rule = B3/S23
5bobo10bo$6b2o8b3o$6bo8bo$15b2o$2o$bo$bob2o$2bo2bo23bo$3b2o24bo$18b2o
9b3o$18b2o11bo5$26bo3b2o$25bobo3bo$21b2obobo3bo$21b2obo4bo$25b5obo$17b
2obob2obo4b2o$17bob2obo2bob2o$10b2o12b2obob3o$10b2o19bo!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
#C [[ THUMBSIZE 2 ZOOM 10 HEIGHT 400 ]]
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A variant with more room on the output side[11] (no known synthesis as of December 17, 2023)(click above to open LifeViewer ) Catagolue : here
x = 33, y = 24, rule = B3/S23
5bobo10bo$6b2o8b3o$6bo8bo$15b2o$2o$bo$bob2o$2bo2bo23bo$3b2o24bo$18b2o
9b3o$18b2o11bo5$26bo3b2o$25bobo3bo$21b2obobo3bo$21b2obo4bo$25b5obo$17b
2obob2obo4bobo$17bob2obo2bob2o2bo$10b2o12b2obob2o$10b2o!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
#C [[ THUMBSIZE 2 ZOOM 10 HEIGHT 400 ]]
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A slightly different variant [12] (no known synthesis as of December 17, 2023)(click above to open LifeViewer ) Catagolue : here
Glider-releasing mechanism
If the non-transparent block is removed, a stray beehive will be left while still giving the output Herschel. In April 2019 , Tanner Jacobi found that a dot sparker can perturb the reaction to give a glider instead; this has since been used to construct many glider guns.[13]
x = 438, y = 89, rule = B3/S23
333bo$334b2o$333b2o63bo$269bo129b2o$270b2o126b2o$269b2o2$78bobo62bo$
10bo68b2o63bo$11bo67bo62b3o$9b3o2$357bo$355b3o$354bo67bo$219bo73bo60b
2o64b3o$220bo70b3o45b2o78bo$218b3o69bo49bo78b2o$102bo130bo56b2o48bob2o
60b2o$100b3o63bo64b3o41b2o64bo2bo23bo36bo$33bo65bo64b3o63bo45bo65b2o
24bo36bob2o$31b3o65b2o62bo66b2o44bob2o77b2o9b3o35bo2bo23bo$30bo53b2o
77b2o50b2o60bo2bo23bo52b2o11bo36b2o24bo$30b2o53bo62b2o66bo61b2o24bo
117b2o9b3o$15b2o68bob2o60bo66bob2o73b2o9b3o115b2o11bo$16bo69bo2bo23bo
35bob2o64bo2bo23bo48b2o11bo$16bob2o67b2o24bo36bo2bo23bo40b2o24bo121bo
3b2o$17bo2bo23bo57b2o9b3o35b2o24bo55b2o9b3o118bobo3bo$18b2o24bo57b2o
11bo50b2o9b3o53b2o11bo97bo19bobo3bo60bo3b2o$33b2o9b3o37b2o80b2o11bo
122bo3b2o35bo16b2obobo3bo60bobo3bo$33b2o11bo37bobo214bobo3bo35bo2bo13b
2obo2b4obo57bobo3bo$87bo130bo59b2o20bobo3bo37b3o17bobo3bobo26bo2bo4bo
2bo14b2obobo3bo$16bo68b2obo22bo3b2o100bobo22bo3b2o27bo20b2obobo3bo28b
2o11bo12b2ob2o2bo2bobo24b3o2b6o2b3o12b2obo2b4obo$15bobo62b2o2bo3bo21bo
bo3bo58bo3b2o36bobo21bobo3bo26bobo2b2o15b2obo2b4obo27bo12bo12bobo2b2o
3bo27bo2bo4bo2bo18bobo3bobo$15bobo24bo3b2o32b2o2bo3b2o19bobo3bo58bobo
3bo33b2obob2o19bobo3bo25bobob3o2bo18bobo3bobo26bobo6b2obo13bobo61b2ob
2o2bo2bobo$12b2obob2o22bobo3bo36bo5bo14b2obobo3bo58bobo3bo34bo2bo18b2o
bobo3bo26bo2b6o15b2ob2o2bo2bobo27b2o4b2obo16bo63bobo2b2o3bo$11bobobo5b
o18bobo3bo40bob2o14b2obo2b4obo36b2o14b2obobo3bo37bobob2o14b2obo2b4obo
27b2ob2o17bobo2b2o3bo34b2obo80bobo$10bo3bob4o2bo13b2obobo3bo38bo5bo18b
obo3bobo35bobo13b2obo2b4obo34b2obo2bo18bobo3bobo25b6o2bo14bobo42bo84bo
$9bo3b3o2bo2b2o13b2obo2b4obo32b2o2bo3b2o15b2ob2o2bo2bobo36b3o16bobo3bo
bo34bo3bobo13b2ob2o2bo2bobo24bo2b3obobo15bo43b2obo$10b2obo2b3o2b2o17bo
bo3bobo31b2o2bo3bo17bobo2b2o3bo38b2o12b2ob2o2bo2bobo34bobobob2o13bobo
2b2o3bo26b2o2bobo55b2o4b2obo$13bo3b2o2bo14b2ob2o2bo2bobo36b2obo17bobo
44bobo14bobo2b2o3bo36b2obobobo12bobo39bo55bobo6b2obo$13b2ob3ob3o14bobo
2b2o3bo39bo19bo40b2o2bobo15bobo46bo2bob3o11bo36b2o58bo12bo$11b2obobobo
bo2bo13bobo44bobo61bobo2bo17bo47bobo5bo106b2o11bo$11b2obo2bo3b2obo13bo
45b2o63b4o67bo5b2o116b3o$14bo3b3o3bo125b2o191bo2bo$14b2o4bo3b2o317bo$
344bo16$20bo72bo59bo67bo$21bo72bo59bo67bo$19b3o70b3o57b3o65b3o$34bo72b
o59bo67bo$32b3o70b3o57b3o65b3o$31bo72bo59bo67bo$31b2o71b2o58b2o66b2o$
16b2o71b2o58b2o66b2o$17bo72bo59bo67bo$17bob2o69bob2o56bob2o64bob2o$18b
o2bo23bo45bo2bo23bo32bo2bo23bo40bo2bo23bo$5b2o2b2o8b2o24bo46b2o24bo33b
2o24bo41b2o24bo$3b3obo2bo23b2o9b3o59b2o9b3o26b2o18b2o9b3o54b2o9b3o$2bo
4b3o24b2o11bo35b2o22b2o11bo27bo18b2o11bo26b2o4b2ob2o17b2o11bo$3bob2o3b
3o69bobo63bob2o56bo4bob2obo$3b2o2bobo2bo3b2o64bo7b2o57b2obo55bob2obo4b
o$5b3obo2bobo2bo65b4o3bo60bo54b2o2bobob4ob2o$3bo4bob2ob4o26bo3b2o32bob
o3bo4bo23bo3b2o29bo24bo3b2o25bobo2bobo2bo3bo22bo3b2o$3b4obo3bo4b3o22bo
bo3bo31bobo3bo4b2o22bobo3bo29b2o22bobo3bo24bo2bob2o2b3obobo21bobo3bo$b
2o4bob3obo3b2o2bo19bobo3bo32bo5bob2o3b2o19bobo3bo28bobob2o19bobo3bo26b
2o3bo2b2o4b2o19bobo3bo$bo2bo2bo3bobobo2bo2b3o13b2obobo3bo30b2ob2o4bo4b
2o2bo14b2obobo3bo27b3o6bo13b2obobo3bo29b2o4b2ob2o3bo14b2obobo3bo$3bobo
b2obo2bob3o4b2o13b2obo2b4obo28bo2bobo3bo2bob2ob2o14b2obo2b4obo24bo3bob
obobo13b2obo2b4obo27bo5bo4bob2o14b2obo2b4obo$2obobo4b6obo2bob2o17bobo
3bobo28bobob2o2bo4b2o2bo18bobo3bobo24b2obobo3bo17bobo3bobo27bo5b4o3bo
18bobo3bobo$3bob4o4bobobob2obo14b2ob2o2bo2bobo27b2o2bo2bobob2o3b2o15b
2ob2o2bo2bobo26bobob2o15b2ob2o2bo2bobo26b2o8bob2o15b2ob2o2bo2bobo$bo
20bo15bobo2b2o3bo30bobo2b2obo3b2o18bobo2b2o3bo27bobo19bobo2b2o3bo34b2o
bobo17bobo2b2o3bo$2bob3obobob3o2b2obobo15bobo38b2o6bob2o2b4o14bobo36b
2o19bobo42b2obobo17bobo$6bobobo6b2obobo16bo47b2obo2bo2bo15bo59bo47bo
19bo!
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
#C [[ ZOOM 4 WIDTH 1000 HEIGHT 500 ]]
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
#C [[ THUMBSIZE 2 WIDTH 1800 HEIGHT 320 ZOOM 4 Y -5 ]]
#C [[ LABELALPHA 1 LABELSIZE 40 COLOR LABEL Blue ]]
#C [[ LABEL 19 -10 6 "p4" ]]
#C [[ LABEL 85 -10 6 "p5" ]]
#C [[ LABEL 151 -10 6 "p6" ]]
#C [[ LABEL 217 -10 6 "p7" ]]
#C [[ LABEL 283 -10 6 "p8" ]]
#C [[ LABEL 349 -10 6 "p9" ]]
#C [[ LABEL 415 -10 6 "p15" ]]
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
#C [[ ZOOM 4 WIDTH 1000 HEIGHT 750 ]]
#C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
#C [[ THUMBSIZE 2 WIDTH 1800 HEIGHT 500 ZOOM 4 Y -5 ]]
#C [[ LABELALPHA 1 LABELSIZE 40 COLOR LABEL Blue ]]
#C [[ LABEL 19 -10 6 "p4" ]]
#C [[ LABEL 85 -10 6 "p5" ]]
#C [[ LABEL 151 -10 6 "p6" ]]
#C [[ LABEL 217 -10 6 "p7" ]]
#C [[ LABEL 283 -10 6 "p8" ]]
#C [[ LABEL 349 -10 6 "p9" ]]
#C [[ LABEL 415 -10 6 "p15" ]]
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Gallery of periodic syringes that produce an extra glider, each using a different dot/functional dot sparker. Top row optimizes west; bottom row optimizes south. From left to right, top to bottom:
p4, using a p4 duoplet sparker and a stator variant of such
p5, using a p5 pipsquirter and a stator variant of such
p6, using a unix and a p6 pipsquirter .
p7, using a 41P7.2 and a p7 pipsquirter stator variant.
p8, using a Kok's galaxy
p9, using a 48P9
p15, using a Pentadecathlon .(click above to open LifeViewer )
See also
References
↑ Tanner Jacobi (March 19, 2015). Re: Let's find a G-to-X (discussion thread) at the ConwayLife.com forums
↑ Jeremy Tan (March 21, 2015). Re: Let's find a G-to-X (discussion thread) at the ConwayLife.com forums
↑ Jeremy Tan (March 21, 2015). Re: Execution of Old Guns by Variable-Speed Firing Squad (discussion thread) at the ConwayLife.com forums
↑ Alexey Nigin (February 11, 2016). Re: Pattern of the Year 2015 (Votes) (discussion thread) at the ConwayLife.com forums
↑ Tanner Jacobi (July 23, 2022). Re: The Hunting of the Elementary Conduits (discussion thread) at the ConwayLife.com forums
↑ 6.0 6.1 Simon Ekström (June 4, 2015). Re: Let's find a G-to-X (Done!) (discussion thread) at the ConwayLife.com forums
↑ Extrementhusiast (April 11, 2015). Re: Let's find a G-to-X (Done!) (discussion thread) at the ConwayLife.com forums
↑ gmc_nxtman (July 13, 2017). Re: Construction practice (discussion thread) at the ConwayLife.com forums
↑ gmc_nxtman (January 26, 2019). Re: Thread for your unsure discoveries (discussion thread) at the ConwayLife.com forums
↑ Goldtiger997 (July 23, 2022). Re: 74/75/78+ Single-Channel Toolkit Challenge (discussion thread) at the ConwayLife.com forums
↑ Matthias Merzenich (April 10, 2015). Re: Execution of Old Guns by Variable-Speed Firing Squad (discussion thread) at the ConwayLife.com forums
↑ Matthias Merzenich (June 13, 2017). Re: The Hunting of the New Herschel Conduits (discussion thread) at the ConwayLife.com forums
↑ Tanner Jacobi (April 23, 2019). Re: Execution of Old Guns by Variable-Speed Firing Squad (discussion thread) at the ConwayLife.com forums
External links