Difference between revisions of "Snark"
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The '''snark''' is a 90° [[Stable reflector|stable glider reflector]] discovered by [[Mike Playle]] in April 2013.<ref>{{cite web|url=http://conwaylife.com/forums/viewtopic.php?p=7819#p7819|title=Just the place for a Snark!|author=Mike Playle|date=April 25, 2013|accessdate=March 27, 2016}}</ref> It is made up of two [[Eater_1|eaters]], a [[block]] and a 31-bit [[still life]], the heart of the Snark. It is currently the fastest and the smallest 90° stable glider reflector, both in terms of the [[population]] and the [[bounding box]]. Another commonly-used stabilization of the catalyst is 34 bits, and many other variants are available. | The '''snark''' is a 90° [[Stable reflector|stable glider reflector]] discovered by [[Mike Playle]] in April 2013.<ref>{{cite web|url=http://conwaylife.com/forums/viewtopic.php?p=7819#p7819|title=Just the place for a Snark!|author=Mike Playle|date=April 25, 2013|accessdate=March 27, 2016}}</ref> It is made up of two [[Eater_1|eaters]], a [[block]] and a 31-bit [[still life]], the heart of the Snark. It is currently the fastest and the smallest 90° stable glider reflector, both in terms of the [[population]] and the [[bounding box]]. Another commonly-used stabilization of the catalyst is 34 bits, and many other variants are available. | ||
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The base reaction was discovered by [[Dietrich Leithner]] about 1998, but it consumed another block.<ref>{{Cite web|url=http://www.conwaylife.com/forums/viewtopic.php?f=2&t=335#p1939|title=Re: Incomplete search patterns - try to complete|author=Adam P. Goucher|date=February 17, 2010|accessdate=May 8, 2013}}</ref> A [[catalyst]] that could replace the block was found with [[Bellman]], a program for searching catalytic reactions | The base reaction was discovered by [[Dietrich Leithner]] about 1998, but it consumed another block.<ref>{{Cite web|url=http://www.conwaylife.com/forums/viewtopic.php?f=2&t=335#p1939|title=Re: Incomplete search patterns - try to complete|author=Adam P. Goucher|date=February 17, 2010|accessdate=May 8, 2013}}</ref> A [[catalyst]] that could replace the block was found with [[Bellman]], a program for searching catalytic reactions developed by [[Mike Playle]]. | ||
Given its small [[repeat time]], the snark made [[oscillator]]s of previously unknown periods of [[:Category:Oscillators with period 43|43]] and [[:Category:Oscillators with period 53|53]] trivial.<ref>{{cite web|url= | Given its small [[repeat time]], the snark made [[oscillator]]s of previously unknown periods of [[:Category:Oscillators with period 43|43]] and [[:Category:Oscillators with period 53|53]] trivial.<ref>{{cite web|url= | ||
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== References == | == References == | ||
<references/> | <references/> | ||
== External links == | == External links == | ||
{{LinkLexicon|lex_s.htm#snark}} | |||
Revision as of 21:21, 27 January 2018
| Snark | |||||||||
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| Pattern type | Stable reflector | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Number of cells | 52 | ||||||||
| Bounding box | 23 × 17 | ||||||||
| Angle | 90° | ||||||||
| Repeat time | 43 | ||||||||
| Discovered by | Mike Playle | ||||||||
| Year of discovery | 2013 | ||||||||
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The snark is a 90° stable glider reflector discovered by Mike Playle in April 2013.[1] It is made up of two eaters, a block and a 31-bit still life, the heart of the Snark. It is currently the fastest and the smallest 90° stable glider reflector, both in terms of the population and the bounding box. Another commonly-used stabilization of the catalyst is 34 bits, and many other variants are available.
four Snark catalyst variants --Top: original variant by Mike Playle Left: Shannon Omick (better clearance on a diagonal) Right: Heinrich Koenig (better clearance on a different diagonal) Bottom: Simon Ekstrom (better clearance on two diagonals) (click above to open LifeViewer) RLE: here Plaintext: here |
The base reaction was discovered by Dietrich Leithner about 1998, but it consumed another block.[2] A catalyst that could replace the block was found with Bellman, a program for searching catalytic reactions developed by Mike Playle.
Given its small repeat time, the snark made oscillators of previously unknown periods of 43 and 53 trivial.[3] It also made most large symmetrical Herschel-loop guns obsolete, since it is now possible to make use of the Herschel gliders with a shorter path of the Herschel track itself. [4]
References
- ↑ Mike Playle (April 25, 2013). "Just the place for a Snark!". Retrieved on March 27, 2016.
- ↑ Adam P. Goucher (February 17, 2010). "Re: Incomplete search patterns - try to complete". Retrieved on May 8, 2013.
- ↑ Matthias Merzenich (April 25, 2013). "Re: Just the place for a Snark!". Retrieved on March 27, 2016.
- ↑ Dave Greene (June 8, 2013). "Re: Just the place for a Snark!". Retrieved on April 5, 2017.
External links
- Snark at the Life Lexicon