Lightweight emulator
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| Lightweight emulator | |||||||||||||
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| Pattern type | Oscillator | ||||||||||||
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| Family | Emulator | ||||||||||||
| Number of cells | 30 | ||||||||||||
| Bounding box | 14 × 6 | ||||||||||||
| Period | 4 | ||||||||||||
| Mod | 4 | ||||||||||||
| Heat | 12 | ||||||||||||
| Volatility | 0.45 | ||||||||||||
| Strict volatility | 0.36 | ||||||||||||
| Discovered by | Robert Wainwright | ||||||||||||
| Year of discovery | 1980 | ||||||||||||
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Lightweight emulator is a period-4 oscillator found by Robert Wainwright in June 1980[1] that produces sparks similar to those produced by the lightweight spaceship. It is the smallest and least useful of the three standard emulators.
This oscillator first appeared semi-naturally in September 2016.[2] A 13-glider synthesis is known for a stator variant[3] featuring loaves; with appropriate component to convert them to pre-blocks, the canonical form can be synthesized from 21 gliders.[4] On January 22, 2023, the synthesis was reduced to 15 gliders based on a soup-based reaction that generates the canonical variant directly.[5] Larger, higher-clearance sparkers are shown below.
| A way more accessible 20 × 18 106-cell p4 lightweight sparker[6] (click above to open LifeViewer) RLE: here Plaintext: here Catagolue: here |
| A (slightly more accessible still) 20 × 19 96-cell p4 lightweight sparker (click above to open LifeViewer) Catagolue: here |
Other variants
| Dual lightweight sparker (occurred as a stator variant; Catagolue: here) (click above to open LifeViewer) Catagolue: here |
See also
References
- ↑ Dean Hickerson's oscillator stamp collection. Retrieved on March 14, 2020.
- ↑ praosylen (September 9, 2016). Re: Soup search results (discussion thread) at the ConwayLife.com forums
- ↑ xp4_2596o696zw6fvz4a961696 at Adam P. Goucher's Catagolue
- ↑ iNoMed (April 5, 2021). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
- ↑ Carson Cheng (January 22, 2023). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
- ↑ James Pascua (May 22, 2021). Re: JP21's Lonely Freedomical Room (discussion thread) at the ConwayLife.com forums
External links
- LW emulator at the Life Lexicon
- Lightweight emulator at Adam P. Goucher's Catagolue
- 30P4.5 at Heinrich Koenig's Game of Life Object Catalogs
Categories:
- Patterns
- Oscillators with 30 cells
- Periodic objects with minimum population 30
- Patterns with 30 cells
- Patterns found by Robert Wainwright
- Patterns found in 1980
- Patterns that can be constructed with 15 gliders
- Patterns that can be constructed with 13 gliders
- Oscillators
- Emulator variants
- Oscillators with period 4
- Oscillators with mod 4
- Oscillators with heat 12
- Oscillators with volatility 0.45
- Oscillators with strict volatility 0.36
- Patterns with bilateral orthogonal symmetry
- Sparkers
- Sparkers with period 4
- Dot sparkers
- Moderate sparkers
- Semi-natural periodic objects