Smiley
Jump to navigation
Jump to search
Smiley | |||||||||||
View animated image | |||||||||||
View static image | |||||||||||
Pattern type | Oscillator | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Number of cells | 17 | ||||||||||
Bounding box | 7×8 | ||||||||||
Frequency class | 42.4 | ||||||||||
Period | 8 | ||||||||||
Mod | 4 | ||||||||||
Heat | 22.5 | ||||||||||
Volatility | 1.00 | ||||||||||
Strict volatility | 1.00 | ||||||||||
Discovered by | Achim Flammenkamp | ||||||||||
Year of discovery | 1994 | ||||||||||
| |||||||||||
| |||||||||||
| |||||||||||
|
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]
Commonness
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
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 42.4
- Natural periodic objects
- Oscillators with 17 cells
- Patterns with 17 cells
- Patterns found by Achim Flammenkamp
- Patterns found in 1994
- Patterns that can be constructed with 8 gliders
- Oscillators
- Periodic objects with minimum population 17
- 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
- Moderate sparkers
- Dot sparkers