Lightweight emulator

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Lightweight emulator
2b2obo2bob2o$2bo8bo$3b2o4b2o$3o2b4o2b3o$o2bo6bo2bo$b2o8b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ HEIGHT 500 THUMBSIZE 3 ZOOM 24 GPS 2 LOOP 4 ]]
Pattern type Oscillator
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

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.

x = 20, y = 18, rule = B3/S23 8bo2bo2$7bo4bo$6bob4obo$3b2o2bo4bo2b2o$6bobo2bobo$3bo4b4o4bo$3bob2o6b 2obo$b2o4b6o4b2o$ob2ob2o6b2ob2obo$2obo2bo2b2o2bo2bob2o$3b2o4b2o4b2o$4o 2bo6bo2b4o$o4bobo4bobo4bo$b3obo8bob3o$3bobob2o2b2obobo$5bo8bo$5b2o6b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 ZOOM 12 GPS 4 AUTOSTART ]]
A way more accessible 20 × 18 106-cell p4 lightweight sparker[6]
(click above to open LifeViewer)
RLE: here Plaintext: here
Catagoluehere
x = 20, y = 19, rule = B3/S23 8bo2bo3$6b8o$6b2o4b2o$5b2o6b2o$5bo8bo2$4bobobo2bobobo$4bo2bo4bo2bo$b2o4bo4bo4b2o$ob16obo$o18bo$b5o8b5o$3bobo2bo2bo2bobo$5b4o2b4o$b4o10b4o$bo2bobo6bobo2bo$5b2o6b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 ZOOM 12 GPS 4 AUTOSTART ]]
A (slightly more accessible still) 20 × 19 96-cell p4 lightweight sparker
(click above to open LifeViewer)
Catagoluehere


Other variants

x = 25, y = 14, rule = B3/S23 10b2ob2o$7b3obobob3o$3b2o2b4o3b4o2b2o$3b2o4bo5bo4b2o$5bo13bo$b5o13b5o$o23bo$b5o13b5o$5bo13bo$3b2o15b2o$3b2o2b2o7b2o2b2o$7bobo5bobo$9bo5bo$9b2o3b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 ZOOM 12 GPS 4 AUTOSTART ]]
Dual lightweight sparker (occurred as a stator variant; Catagoluehere)
(click above to open LifeViewer)
Catagoluehere


See also

References

  1. Dean Hickerson's oscillator stamp collection. Retrieved on March 14, 2020.
  2. praosylen (September 9, 2016). Re: Soup search results (discussion thread) at the ConwayLife.com forums
  3. xp4_2596o696zw6fvz4a961696 at Adam P. Goucher's Catagolue
  4. iNoMed (April 5, 2021). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
  5. Carson Cheng (January 22, 2023). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
  6. James Pascua (May 22, 2021). Re: JP21's Lonely Freedomical Room (discussion thread) at the ConwayLife.com forums

External links