Lightweight emulator: Difference between revisions

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trans variant synthesis
 
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This oscillator first appeared [[semi-natural]]ly in September {{year|2016}}.<ref name="post35484" /> A {{gliders|13}} [[synthesis]] is known for a stator variant<ref>{{LinkCatagolue|xp4_2596o696zw6fvz4a961696|style=nobullet}}</ref> featuring [[loaves]]; with appropriate [[component]] to convert them to [[pre-block]]s, the canonical form can be synthesized from {{gliders|21|text=21 gliders}}.<ref name="post127778" /> On January 22, {{year|2023}}, the synthesis was reduced to {{gliders|15|text=15 gliders}} based on a soup-based reaction that generates the canonical variant directly.<ref name="post156296" />
This oscillator first appeared [[semi-natural]]ly in September {{year|2016}}.<ref name="post35484" /> A {{gliders|13}} [[synthesis]] is known for a stator variant<ref>{{LinkCatagolue|xp4_2596o696zw6fvz4a961696|style=nobullet}}</ref> featuring [[loaves]]; with appropriate [[component]] to convert them to [[pre-block]]s, the canonical form can be synthesized from {{gliders|21|text=21 gliders}}.<ref name="post127778" /> On January 22, {{year|2023}}, the synthesis was reduced to {{gliders|15|text=15 gliders}} based on a soup-based reaction that generates the canonical variant directly.<ref name="post156296" />


"Lightweight emulator" most often refers to the "cis" variant displayed to the right; there is also a less-used "trans" variant of this oscillator.
"Lightweight emulator" most often refers to the "cis" variant displayed to the right; there is also a less-used "trans" variant of this oscillator. On July 18, {{year|2025}}, [[KtT]] found a {{gliders|53}} synthesis of the "trans" variant.<ref name="post214724"/><ref name="j10724233666"/>


{| class="wikitable" style="margin-left:auto; margin-right:auto; text-align:center"
{| class="wikitable" style="margin-left:auto; margin-right:auto; text-align:center"
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| n.e
| n.e
| {{LinkCatagolue|xp4_0c4o796z06fvz69e123|style=raw}}
| {{LinkCatagolue|xp4_0c4o796z06fvz69e123|style=raw}}
| style="background-color:#ffc7ce" | '''No synthesis known'''
| 53
|}
|}


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== References ==
== References ==
<references>
<references>
<ref name="j10724233666">{{CiteCatagolueJob|job=10724233666|date=July 18, 2025}}</ref>
<ref name="post35484">{{LinkForumThread
<ref name="post35484">{{LinkForumThread
|format = ref
|format = ref
Line 125: Line 126:
|author = Carson Cheng
|author = Carson Cheng
|date  = January 22, 2023
|date  = January 22, 2023
}}</ref>
<ref name="post214724">{{LinkForumThread
|format = ref
|p      = 214724
|title  = Re: Synthesising Oscillators
|author = KtT
|date  = July 18, 2025
}}</ref>
}}</ref>
</references>
</references>

Latest revision as of 04:48, 18 July 2025

Lightweight emulator
x = 14, y = 6, rule = B3/S23 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 ]]
View animated image
View static image
Pattern type Oscillator
Family Emulator
Number of cells 30
Bounding box 14 × 6
Period 4 (mod: 4)
Heat 12
Volatility 0.45 | 0.36
Kinetic symmetry -e
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]

"Lightweight emulator" most often refers to the "cis" variant displayed to the right; there is also a less-used "trans" variant of this oscillator. On July 18, 2025, KtT found a 53-glider synthesis of the "trans" variant.[6][7]

Image Name Kinetic symmetry apgcode Cost in gliders
Cis-lightweight emulator -e xp4_c4o796z6fvz321e96 15
Trans-lightweight emulator n.e xp4_0c4o796z06fvz69e123 53

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 considerably more accessible 20 × 18 106-cell p4 lightweight sparker[8]
(click above to open LifeViewer)
RLE: here Plaintext: here
Catagolue: here
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)
Catagolue: here


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; Catagolue: here)
(click above to open LifeViewer)
Catagolue: here


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. ↑ KtT (July 18, 2025). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
  7. ↑ shinjuku (#10724233666) (July 18, 2025). Job triggered by Adam P. Goucher at GitLab Catagolue project.
  8. ↑ James Pascua (May 22, 2021). Re: JP21's Lonely Freedomical Room (discussion thread) at the ConwayLife.com forums
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