Smiley: Difference between revisions
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'''Smiley''' is a | '''Smiley''' is a {{period|8}} [[oscillator]] that was found by [[Achim Flammenkamp]] in July {{year|1994}} 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=http://www.conwaylife.com/forums/viewtopic.php?p=22689#p22689|title=More straw|author=Mark Niemiec|date=November 1, 1994|accessdate=October 8, 2015}}</ref> | 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=http://www.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 January | A 28-[[glider synthesis]] for it was discovered in January {{year|2008}} by [[Jason Summers]].<ref>{{cite web|url=http://pentadecathlon.com/lifeNews/2008/01/oscillator_construction.html|title=Oscillator Construction|publisher=Game of Life News|author=H. Koenig|accessdate=May 2, 2009}}</ref> In August {{year|2015}}, [[Matthias Merzenich]] proposed an 8-glider synthesis based on a soup found by [[Adam P. Goucher]] using [[apgsearch]].<ref>{{cite web|url=http://www.conwaylife.com/forums/viewtopic.php?p=21605#p21605|title=Re: Soup search results|author=Matthias Merzenich|date=August 8, 2015|accessdate=September 18, 2015}}</ref> | ||
==[[List of common oscillators|Commonness]]== | ==[[List of common oscillators|Commonness]]== | ||
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{{Symmetry|orthogonal2|osc=flip}} | {{Symmetry|orthogonal2|osc=flip}} | ||
{{Sparker|p=8|type=dot|strength=moderate}} | |||
__NOTOC__ | __NOTOC__ | ||
Revision as of 01:22, 27 December 2019
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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 in July 1994 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.[1]
Synthesis
A 28-glider synthesis for it was discovered in January 2008 by Jason Summers.[2] In August 2015, Matthias Merzenich proposed an 8-glider synthesis based on a soup found by Adam P. Goucher using apgsearch.[3]
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.[4]
Image gallery
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References
- ↑ Mark Niemiec (November 1, 1994). "More straw". Retrieved on October 8, 2015.
- ↑ H. Koenig. "Oscillator Construction". Game of Life News. Retrieved on May 2, 2009.
- ↑ Matthias Merzenich (August 8, 2015). "Re: Soup search results". Retrieved on September 18, 2015.
- ↑ 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