Difference between revisions of "Light bulb"

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__NOTOC__{{Oscillator|name=Light bulb|pname=lightbulb|p=2|h=3|c=23|bx=7|by=9|discoveryear=1971|life105=true|life106=true|plaintext=true|rle=true|animated=yes}}
{{Oscillator
'''Light bulb''' is a [[period]] [[:Category:Oscillators with period 2|2]] [[oscillator]] that was found in [[:Category:Patterns found in 1971|1971]]. Its [[rotor]] is the only known 3-[[cell]] period 2 rotor, and it can be embedded in a slightly smaller [[stator]], giving the [[:Category:Patterns with 21 cells|21]]-[[cell]] variant shown below. Two other variants of this oscillator are also known.<ref>{{cite web|url=http://www.pentadecathlon.com/rotors/rotors.php?page=3 |title=Period 2 Oscillator Rotors |accessdate=March 16, 2009}}</ref>
|name         = Light bulb
|pname       = lightbulb
|f1          = Babbling brook
|f2          = Billiard table
|c           = 23
|bx           = 7
|by           = 9
|p            = 2
|m            = 2
|h            = 3
|v            = 0.12
|rotor        = Filament
|discoveryear = 1971
|rulemin      = B3/S23
|rulemax      = B378/S0123678
|rulespecial  = [[Conway's Game of Life|Conway Life]]
|isorulemin  = B3ij/S2-cn3ejnr
|isorulemax  = B2in34-ikrwy5-jqry6-in78/S01234-k5-e678
|synthesis    = 26
|synthesisRLE = true
|plaintext   = true
|rle         = true
|animated     = yes
|apgcode      = xp2_3p606p3z0c95d
|viewerconfig = #C [[ GPS 2 ZOOM 20 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}}-[[cell]] variant shown below. Two other variants of this oscillator are also known.<ref>{{cite web|url=http://www.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}} [[synthesis]] for the resulting oscillator<ref>{{citeCatagolue|title=lightbulb_and_cis-hook|page=object/xp2_03lkmzojc0cjo/b3s23|accessdate=July 16, 2019}}</ref>) though these lead to larger [[bounding box]]es.


==Image gallery==
==Image gallery==
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|[[Image:Lightbulb2_anim.gif|framed|left|A variant of the light bulb that is 2 cells smaller.]]
|[[Image:Lightbulb2_anim.gif|framed|left|A variant of the light bulb that is 2 cells smaller.]]
|}
|}
==See also==
*[[Babbling brook]]


==References==
==References==
<references />
<references>
<ref name="pddict">{{cite web
|title      = Game of Life Dictionary
|work      = Pentadecathlon.com
|url        = http://pentadecathlon.com/dictionary/dictionary.php
|accessdate = 2016-10-02
}}</ref>
</references>


==External links==
==External links==
[http://www.argentum.freeserve.co.uk/lex_l.htm#lightbulb Light bulb] at the Life Lexicon
{{LinkWeisstein|LightBulb.html}}
{{LinkLexicon|lex_l.htm#lightbulb}}
{{LinkCatagolue|xp2_3p606p3z0c95d}}
__NOTOC__

Revision as of 21:18, 16 July 2019

Light bulb
x = 7, y = 9, rule = B3/S23 b2obo$bob2o2$2b3o$bo3bo$bo3bo$2bobo$obobobo$2o3b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ GPS 2 ZOOM 20 LOOP 2 ]]
View animated image
View static image
Pattern type Oscillator
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

Light bulb is a period-2 oscillator that was found in 1971. Its rotor, known as the filament,[1] 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.[2] 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[3]) though these lead to larger bounding boxes.

Image gallery

A variant of the light bulb that is 2 cells smaller.

References

  1. ↑ "Game of Life Dictionary". Pentadecathlon.com. Retrieved on 2016-10-02.
  2. ↑ "Period 2 Oscillator Rotors". Retrieved on March 16, 2009.
  3. ↑ Adam P. Goucher. "lightbulb_and_cis-hook". Catagolue. Retrieved on July 16, 2019.

External links

Template:LinkWeisstein

Retrieved from "https://conwaylife.com/w/index.php?title=Light_bulb&oldid=62925"