Difference between revisions of "Light bulb"
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{{Oscillator | {{Oscillator | ||
|name | |name = Light bulb | ||
|pname | |pname = lightbulb | ||
|f1 | |f1 = Babbling brook | ||
|f2 | |f2 = Billiard table | ||
|c | |c = 23 | ||
|bx | |bx = 7 | ||
|by | |by = 9 | ||
|p | |p = 2 | ||
|m | |m = 2 | ||
|h | |h = 3 | ||
|v | |v = 0.12 | ||
|rotor | |rotor = Filament | ||
|discoveryear = 1971 | |discoveryear = 1971 | ||
|rulemin | |rulemin = B3/S23 | ||
|rulemax | |rulemax = B378/S0123678 | ||
|rulespecial | |rulespecial = [[Conway's Game of Life|Conway Life]] | ||
|isorulemin | |isorulemin = B3ij/S2-cn3ejnr | ||
|isorulemax | |isorulemax = B2in34-ikrwy5-jqry6-in78/S01234-k5-e678 | ||
|synthesis | |synthesis = 23 | ||
|synthesisRLE = true | |synthesis2 = 6 | ||
|plaintext | |synthesisRLE = true | ||
|rle | |plaintext = true | ||
|animated | |rle = true | ||
|apgcode | |animated = yes | ||
|viewerconfig = #C [[ GPS 2 | |pentadecathlonid = 23P2.760 | ||
|apgcode = xp2_3p606p3z0c95d | |||
|apgcode2 = xp2_03lkmzojc0cjo | |||
|viewerconfig = #C [[ HEIGHT 600 THUMBSIZE 3 ZOOM 30 GPS 2 LOOP 2 ]] | |||
}} | }} | ||
'''Light bulb''' is a {{period|2}} [[oscillator]] that was found in {{year|1971}}. Its [[rotor]], known as the '''filament''',<ref name="pddict" /> is the only known 3-[[cell]] period 2 rotor, and it can be embedded in a slightly smaller [[stator]], giving the {{cells|21}} | '''Light bulb''' is a {{period|2}} [[oscillator]] that was found in {{year|1971}}.<ref>{{CiteLifeline|vol=3|pages=page 3}}</ref><ref>{{CiteHickersonOscillators|accessdate=March 14, 2020}}</ref> Its [[rotor]], known as the '''filament''',<ref name="pddict" /> is the only known 3-[[cell]] period 2 rotor, and it can be embedded in a slightly smaller [[stator]], giving the {{cells|21|text=21-cell}} variant shown below. Two other variants of this oscillator are also known.<ref>{{cite web|url=https://web.archive.org/web/20221101124052/http://pentadecathlon.com/rotors/rotors.php?page=3 |title=Period 2 Oscillator Rotors |accessdate=March 16, 2009}}</ref> Various other small [[induction coil]]s can also be used in place of the [[snake]] at the top of the bulb, including [[house]] and [[bookend]], (the latter of which has a known {{gliders|6}} [[Glider synthesis|synthesis]] for the resulting oscillator<ref>{{LinkCatagolue|xp2_03lkmzojc0cjo|style=nobullet}}</ref>) though these lead to larger [[bounding box]]es. | ||
First [[soup]]-based syntheses for this oscillator were discovered by [[Mark Niemiec]] on December 17, {{year|2004}} based on results from [[Andrzej Okrasinski's census]], costing {{gliders|11|text=11 gliders}} for the house-stabilized version and {{gliders|16|text=16 gliders}} for the bookend-stabilized version.<ref>{{CiteSummersPattern|name=jslife|accessdate=January 5, 2020}}</ref> | |||
{{EmbedViewer | |||
{ | |pname = lightbulb2 | ||
| | |viewerconfig = #C [[ THUMBSIZE 2 AUTOSTART GPS 2 ]] | ||
|[[ | |position = center | ||
|} | |caption = A variant of the light bulb that is 2 cells smaller | ||
|style = width:300px; | |||
|apgcode = xp2_17844ozw320f871 | |||
}} | |||
==References== | ==References== | ||
<references> | <references> | ||
<ref name="pddict">{{ | <ref name="pddict">{{LinkGoLDictionary|Filament|filament}}</ref> | ||
| | |||
| | |||
}}</ref> | |||
</references> | </references> | ||
==External links== | ==External links== | ||
{{ | * {{LinkLexicon|lex_l.htm#lightbulb}} | ||
{{ | * {{LinkPentadecathlonObject|23P2.760}} | ||
{{LinkCatagolue|xp2_3p606p3z0c95d}} | * {{LinkGoLNews|2004/12/lightbulb_construction.html|title=Lightbulb Construction|date=December 18, 2004|author=Heinrich Koenig}} | ||
* {{LinkCatagolue|xp2_3p606p3z0c95d}} | |||
[[Category:Rumbling rivers]] | |||
__NOTOC__ | __NOTOC__ |
Latest revision as of 15:08, 12 February 2024
Light bulb | |||||||||||||||
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Pattern type | Oscillator | ||||||||||||||
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Oscillator type | Babbling brook | ||||||||||||||
Billiard table | |||||||||||||||
Number of cells | 23 | ||||||||||||||
Bounding box | 7 × 9 | ||||||||||||||
Period | 2 | ||||||||||||||
Mod | 2 | ||||||||||||||
Heat | 3 | ||||||||||||||
Volatility | 0.12 | ||||||||||||||
Strict volatility | 0.12 | ||||||||||||||
Rotor type | Filament | ||||||||||||||
Discovered by | Unknown | ||||||||||||||
Year of discovery | 1971 | ||||||||||||||
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Light bulb is a period-2 oscillator that was found in 1971.[1][2] Its rotor, known as the filament,[3] is the only known 3-cell period 2 rotor, and it can be embedded in a slightly smaller stator, giving the 21-cell variant shown below. Two other variants of this oscillator are also known.[4] Various other small induction coils can also be used in place of the snake at the top of the bulb, including house and bookend, (the latter of which has a known 6-glider synthesis for the resulting oscillator[5]) though these lead to larger bounding boxes.
First soup-based syntheses for this oscillator were discovered by Mark Niemiec on December 17, 2004 based on results from Andrzej Okrasinski's census, costing 11 gliders for the house-stabilized version and 16 gliders for the bookend-stabilized version.[6]
A variant of the light bulb that is 2 cells smaller (click above to open LifeViewer) RLE: here Plaintext: here Catagolue: here |
References
- ↑ Robert Wainwright (September 1971). Lifeline, vol 3, page 3.
- ↑ Dean Hickerson's oscillator stamp collection. Retrieved on March 14, 2020.
- ↑ Heinrich Koenig. Filament. Game of Life Dictionary.
- ↑ "Period 2 Oscillator Rotors". Retrieved on March 16, 2009.
- ↑ xp2_03lkmzojc0cjo at Adam P. Goucher's Catagolue
- ↑ Jason Summers' jslife pattern collection. Retrieved on January 5, 2020.
External links
- Light bulb at the Life Lexicon
- 23P2.760 at Heinrich Koenig's Game of Life Object Catalogs
- Lightbulb Construction at Game of Life News. Posted by Heinrich Koenig on December 18, 2004.
- Light bulb at Adam P. Goucher's Catagolue
- Patterns
- Oscillators with 23 cells
- Periodic objects with minimum population 23
- Patterns with 23 cells
- Patterns found in 1971
- Patterns that can be constructed with 23 gliders
- Patterns that can be constructed with 6 gliders
- Oscillators
- Babbling brooks
- Billiard tables
- Oscillators with period 2
- Oscillators with mod 2
- Oscillators with heat 3
- Oscillators with volatility 0.12
- Oscillators with strict volatility 0.12
- Oscillators with rotor Filament
- Rumbling rivers