Light bulb

	Light bulb
	<html><div class="rle"><div class="codebox"><div style="display:none;"><code></html>x = 7, y = 9, rule = B3/S23 b2obo$bob2o2$2b3o$bo3bo$bo3bo$2bobo$obobobo$2o3b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] <nowiki>#C [[ GPS 2 ZOOM 20 LOOP 2 ]]</nowiki> <html></code></div></div><canvas width="200" height="300" style="margin-left:1px;"><noscript></html> <html></noscript></canvas></div></html>
	<html><div class="rle"><div class="codebox"><div style="display:none;"><code></html>x = 7, y = 9, rule = B3/S23 b2obo$bob2o2$2b3o$bo3bo$bo3bo$2bobo$obobobo$2o3b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] <nowiki>#C [[ GPS 2 ZOOM 20 LOOP 2 ]]</nowiki> <html></code></div></div><canvas width="200" height="300" style="margin-left:1px;"><noscript></html> <html></noscript></canvas></div></html>
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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
Rules
Outer-totalistic rules	B3/S23 – B378/S0123678
Important rules	Conway Life
# of rules	27 = 128
Isotropic rules	B3ij/S2-cn3ejnr – B2in34-ikrwy5-jqry6-in78/S01234-k5-e678
Glider synthesis
Fewest gliders	26
Catagolue-generated RLE	lightbulb_synth.rle
Uploaded synthesis RLE	lightbulb_synth.rle
Pattern files
Plaintext	lightbulb.cells
RLE	lightbulb.rle
Identifiers
apgcode	xp2_3p606p3z0c95d

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

The 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 for the bookend-stabilized version.[4]

Image gallery

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

gollark: ?emojistats

gollark: ++delete <:Thonk:445016973798014987> <:Thonkdown:433149076721238016> <:Thonk:445016973798014987> <:Thonkdown:433149076721238016> <:Thonk:445016973798014987> <:Thonkdown:433149076721238016> <:Thonk:445016973798014987> <:Thonkdown:433149076721238016> <:Thonk:445016973798014987> <:Thonkdown:433149076721238016> <:Thonk:445016973798014987> <:Thonkdown:433149076721238016> <:Thonk:445016973798014987> <:Thonkdown:433149076721238016> <:Thonk:445016973798014987> <:Thonkdown:433149076721238016> <:Thonk:445016973798014987> <:Thonkdown:433149076721238016> <:Thonk:445016973798014987> <:Thonkdown:433149076721238016> <:Thonk:445016973798014987> <:Thonkdown:433149076721238016> <:Thonk:445016973798014987> <:Thonkdown:433149076721238016> <:Thonk:445016973798014987> <:Thonkdown:433149076721238016> <:Thonk:445016973798014987> <:Thonkdown:433149076721238016> <:Thonk:445016973798014987> <:Thonkdown:433149076721238016> <:Thonk:445016973798014987> <:Thonkdown:433149076721238016> <:Thonk:445016973798014987> <:Thonkdown:433149076721238016> <:Thonk:445016973798014987> <:Thonkdown:433149076721238016> <:Thonk:445016973798014987> <:Thonkdown:433149076721238016> <:Thonk:445016973798014987> <:Thonkdown:433149076721238016> <:Thonk:445016973798014987> <:Thonkdown:433149076721238016> <:Thonk:445016973798014987> <:Thonkdown:433149076721238016> <:Thonk:445016973798014987> <:Thonkdown:433149076721238016> <:Thonk:445016973798014987> <:Thonkdown:433149076721238016> <:Thonk:445016973798014987> <:Thonkdown:433149076721238016> <:Thonk:445016973798014987> <:Thonkdown:433149076721238016>

References

Dean Hickerson's oscillator stamp collection. Retrieved on March 14, 2020.
"Game of Life Dictionary". Pentadecathlon.com. Retrieved on 2016-10-02.
"Period 2 Oscillator Rotors". Retrieved on March 16, 2009.
Jason Summers' jslife pattern collection. Retrieved on January 5, 2020.

External links

Light bulb at the Life Lexicon

Light bulb at Adam P. Goucher's Catagolue

This article is issued from Conwaylife. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.

[1] Dean Hickerson's oscillator stamp collection. Retrieved on March 14, 2020.

[pddict-2] "Game of Life Dictionary". Pentadecathlon.com. Retrieved on 2016-10-02.

[3] "Period 2 Oscillator Rotors". Retrieved on March 16, 2009.

[4] Jason Summers' jslife pattern collection. Retrieved on January 5, 2020.