Conduit 1: Difference between revisions
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'''Conduit 1''', also known by its systematic name '''BFx59H''', is one of the earliest and most remarkable [[converter]]s, discovered by [[David Buckingham]] on July 5, {{year|1996}}. Composed of a [[block]] and a [[snake]] (or [[eater 1]] in either of two orientations to make it [[Spartan]], or [[shillelagh]] for slightly better [[clearance]]<ref name="post6471" />), it transforms a [[B-heptomino]] into a clean [[Herschel]] with very good [[clearance]] in 59 generations, allowing easy connections to other [[conduit]]s. | '''Conduit 1''', also known by its systematic name '''BFx59H''', is one of the earliest and most remarkable [[converter]]s, discovered by [[David Buckingham]] on July 5, {{year|1996}}. Composed of a [[block]] and a [[rock]] [[snake]] (or [[eater 1]] in either of two orientations to make it [[Spartan]], or [[shillelagh]] for slightly better [[clearance]] on the opposite side<ref name="post6471" />), it transforms a [[B-heptomino]] into a clean [[Herschel]] with very good [[clearance]] in 59 generations, allowing easy connections to other [[conduit]]s. | ||
It forms the final stage of many of the known [[composite conduit]]s, including the majority of the original sixteen [[Herschel conduit]]s. It is important because it was one of the key pieces in finding a method for construction of [[oscillator]]s and [[gun]]s of arbitrary large [[period]] (see [[omniperiodic]]). | It forms the final stage of many of the known [[composite conduit]]s, including the majority of the original sixteen [[Herschel conduit]]s. It is important because it was one of the key pieces in finding a method for construction of [[oscillator]]s and [[gun]]s of arbitrary large [[period]] (see [[omniperiodic]]). | ||
== BFx59H injector == | == BFx59H injector == | ||
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|caption = BFx59H injector | |caption = BFx59H injector | ||
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Earlier in {{year|1992}}, Buckingham found a collision involving two 180-degree gliders and the block | Earlier in {{year|1992}}, Buckingham found a collision involving two 180-degree gliders and a block, which when catalysed by a snake produces a Herschel and restores the block. After the discovery of BFx59H, it was realized that the constellation is identical because the same block is consumed to make the same intermediate [[R-pentomino]]. The reaction has a [[repeat time]] of 65 ticks. | ||
This was first used by the [[over-unity reaction]] in a p500+200n glider gun built around November 17.<ref>[https://conwaylife.com/ref/lifepage/patterns/gun4b.html <tt>gun4b.lif</tt>] at [[Paul Callahan]]'s Life Pattern Catalog</ref> In February 2004, [[Karel Suhajda]] built a pseudo [[period-14 glider gun]] at period 70 containing this mechanism. | |||
For a long time this mechanism has been unnamed. It was named '''BFx59H injector''' recently{{citation needed}} due to the observation that it allows one to inject a Herschel in the middle of a Herschel track. For clearance issues, the preceding conduit is the [[RF28B]] variant with extra forward glider (as in a variant of [[L156]]) and the succeeding conduit is [[R64]]. As this requires two [[synchronized]] [[signal]]s, it has been obsoleted by single-input merge conduits like [[rectifier]] and [[Bx106|Bx106/Fx119 Herschel merger]]. | |||
== See also == | == See also == | ||
* [[BF20H]] | * [[BF20H]] | ||
* [[BRx46B]] | * [[BRx46B]] | ||
* [[R49]] | |||
== References == | == References == | ||
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{{LinkCatagolue|xs10_3213y1oo|format=pseudo-object}} | {{LinkCatagolue|xs10_3213y1oo|format=pseudo-object}} | ||
__NOTOC__ | __NOTOC__ | ||
{{GliderNavbox}} | |||
Revision as of 12:25, 29 April 2022
| Conduit 1 | |||||||||
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| Pattern type | Conduit | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Conduit type | Converter | ||||||||
| Input | B-heptomino | ||||||||
| Output | Herschel | ||||||||
| Number of cells | 10 | ||||||||
| Bounding box | 11 × 5 | ||||||||
| Output orientation | Unturned, flipped | ||||||||
| Step | 59 ticks | ||||||||
| Recovery time (ignoring FNG if any) |
54 ticks | ||||||||
| Minimum overclock period (ignoring FNG if any) |
Unknown | ||||||||
| Spartan? | Yes | ||||||||
| Discovered by | David Buckingham | ||||||||
| Year of discovery | 1996 | ||||||||
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Conduit 1, also known by its systematic name BFx59H, is one of the earliest and most remarkable converters, discovered by David Buckingham on July 5, 1996. Composed of a block and a rock snake (or eater 1 in either of two orientations to make it Spartan, or shillelagh for slightly better clearance on the opposite side[1]), it transforms a B-heptomino into a clean Herschel with very good clearance in 59 generations, allowing easy connections to other conduits.
It forms the final stage of many of the known composite conduits, including the majority of the original sixteen Herschel conduits. It is important because it was one of the key pieces in finding a method for construction of oscillators and guns of arbitrary large period (see omniperiodic).
BFx59H injector
| BFx59H injector (click above to open LifeViewer) RLE: here Plaintext: here |
Earlier in 1992, Buckingham found a collision involving two 180-degree gliders and a block, which when catalysed by a snake produces a Herschel and restores the block. After the discovery of BFx59H, it was realized that the constellation is identical because the same block is consumed to make the same intermediate R-pentomino. The reaction has a repeat time of 65 ticks.
This was first used by the over-unity reaction in a p500+200n glider gun built around November 17.[2] In February 2004, Karel Suhajda built a pseudo period-14 glider gun at period 70 containing this mechanism.
For a long time this mechanism has been unnamed. It was named BFx59H injector recently[citation needed] due to the observation that it allows one to inject a Herschel in the middle of a Herschel track. For clearance issues, the preceding conduit is the RF28B variant with extra forward glider (as in a variant of L156) and the succeeding conduit is R64. As this requires two synchronized signals, it has been obsoleted by single-input merge conduits like rectifier and Bx106/Fx119 Herschel merger.
See also
References
- ↑ Sergey Petrov (March 27, 2012). Re: Thread For Your Accidental Discoveries (discussion thread) at the ConwayLife.com forums
- ↑ gun4b.lif at Paul Callahan's Life Pattern Catalog
External links
- BFx59H at the Life Lexicon
Buckingham on B-heptominos in oscillators at Paul Callahan's Page of Conway's Life Miscellany
- Conduit 1 at Adam P. Goucher's Catagolue (pseudo-object)
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