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'''Smiley''' is a {{period|8}} [[oscillator]] that was found by [[Achim Flammenkamp]] on July 17, {{year|1994}}<ref>{{CiteHickersonOscillators|accessdate=March 14, 2020}}</ref> and named by [[Alan Hensel]]. | '''Smiley''' is a {{period|8}} [[oscillator]] that was found by [[Achim Flammenkamp]] on July 17, {{year|1994}}<ref>{{CiteHickersonOscillators|accessdate=March 14, 2020}}</ref> and named by [[Alan Hensel]]. | ||
In November 1994 [[Mark Niemiec]] noticed that its sparks can interact in boring, but non-trivial ways with other oscillators, optionally creating oscillators of higher periods.<ref>{{cite web|url=https:// | In November 1994 [[Mark Niemiec]] noticed that its sparks can interact in boring, but non-trivial ways with other oscillators, optionally creating oscillators of higher periods.<ref>{{cite web|url=https://conwaylife.com/forums/viewtopic.php?p=22689#p22689|title=More straw|author=Mark Niemiec|date=November 1, 1994|accessdate=October 8, 2015}}</ref> | ||
==Synthesis== | ==Synthesis== | ||
A 28-[[glider synthesis]] for it was discovered in October {{year|2007}} by [[Jason Summers]].<ref>{{CiteSummersPattern|name=jslife|accessdate=January 5, 2020}}</ref> In November {{year|2014}}, [[Martin Grant]] posted an {{gliders|11|brief}}-glider synthesis based on a [[symmetric]] [[soup]] found by [[Ivan Fomichev]] using [[apgsearch]].<ref name="post14619" /> In August {{year|2015}}, [[Matthias Merzenich]] posted an 8-glider synthesis based on the first asymmetric soup, found by [[Adam P. Goucher]].<ref>{{cite web|url=https:// | A 28-[[glider synthesis]] for it was discovered in October {{year|2007}} by [[Jason Summers]].<ref>{{CiteSummersPattern|name=jslife|accessdate=January 5, 2020}}</ref> In November {{year|2014}}, [[Martin Grant]] posted an {{gliders|11|brief}}-glider synthesis based on a [[symmetric]] [[soup]] found by [[Ivan Fomichev]] using [[apgsearch]].<ref name="post14619" /> In August {{year|2015}}, [[Matthias Merzenich]] posted an 8-glider synthesis based on the first asymmetric soup, found by [[Adam P. Goucher]].<ref>{{cite web|url=https://conwaylife.com/forums/viewtopic.php?p=21605#p21605|title=Re: Soup search results|author=Matthias Merzenich|date=August 1, 2015|accessdate=September 18, 2015}}</ref><ref name="post21578" /> | ||
==[[List of common oscillators|Commonness]]== | ==[[List of common oscillators|Commonness]]== | ||
Revision as of 04:15, 3 February 2022
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| Pattern type | Oscillator | ||||||||
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| Number of cells | 17 | ||||||||
| Bounding box | 7 × 8 | ||||||||
| Frequency class | 42.4 | ||||||||
| Period | 8 (mod: 4) | ||||||||
| Heat | 22.5 | ||||||||
| Volatility | 1.00 | 1.00 | ||||||||
| Kinetic symmetry | Unspecified | ||||||||
| Discovered by | Achim Flammenkamp | ||||||||
| Year of discovery | 1994 | ||||||||
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Smiley is a period-8 oscillator that was found by Achim Flammenkamp on July 17, 1994[1] and named by Alan Hensel.
In November 1994 Mark Niemiec noticed that its sparks can interact in boring, but non-trivial ways with other oscillators, optionally creating oscillators of higher periods.[2]
Synthesis
A 28-glider synthesis for it was discovered in October 2007 by Jason Summers.[3] In November 2014, Martin Grant posted an 11-glider synthesis based on a symmetric soup found by Ivan Fomichev using apgsearch.[4] In August 2015, Matthias Merzenich posted an 8-glider synthesis based on the first asymmetric soup, found by Adam P. Goucher.[5][6]
On Catagolue, it is the fourth most common period 8 oscillator, being less common than Coe's p8 but slightly more common than Achim's p8.[7]
Image gallery
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References
- ↑ Dean Hickerson's oscillator stamp collection. Retrieved on March 14, 2020.
- ↑ Mark Niemiec (November 1, 1994). "More straw". Retrieved on October 8, 2015.
- ↑ Jason Summers' jslife pattern collection. Retrieved on January 5, 2020.
- ↑ Martin Grant (November 28, 2014). Re: Soup search results (discussion thread) at the ConwayLife.com forums
- ↑ Matthias Merzenich (August 1, 2015). "Re: Soup search results". Retrieved on September 18, 2015.
- ↑ Martin Grant (July 31, 2015). Re: Soup search results (discussion thread) at the ConwayLife.com forums
- ↑ Adam P. Goucher. "Statistics". Catagolue. Retrieved on October 27, 2018.
External links
- Smiley at the Life Lexicon
- 17P8.1 at Heinrich Koenig's Game of Life Object Catalogs
Categories:
- Patterns
- Patterns with Catagolue frequency class 42
- Natural periodic objects
- Oscillators with 17 cells
- Periodic objects with minimum population 17
- Patterns with 17 cells
- Patterns found by Achim Flammenkamp
- Patterns found in 1994
- Patterns that can be constructed with 8 gliders
- Oscillators
- Oscillators with period 8
- Oscillators with mod 4
- Oscillators with heat 22
- Oscillators with volatility 1.00
- Oscillators with strict volatility 1.00
- Patterns with bilateral orthogonal symmetry
- Flipping oscillators
- Sparkers
- Sparkers with period 8
- Dot sparkers
- Moderate sparkers