Pinwheel: Difference between revisions

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|v                = 0.20
|v                = 0.20
|sv              = 0.20
|sv              = 0.20
|symmetry        = nrk
|discoverer      = Simon Norton
|discoverer      = Simon Norton
|discoveryear    = 1970
|discoveryear    = 1970
Line 19: Line 20:
|isorulemin      = B3ik/S2ik3aeinr
|isorulemin      = B3ik/S2ik3aeinr
|isorulemax      = B2in34-intw5aceiy678/S01e234-n5678
|isorulemax      = B2in34-intw5aceiy678/S01e234-n5678
|synthesis        = 188
|synthesis        = 160
|synthesis2      = 112
|synthesis2      = 112
|synthesisRLE    = true
|synthesisRLE    = true
Line 25: Line 26:
|rle              = true
|rle              = true
|animated        = yes
|animated        = yes
|viewerconfig    = #C [[ TRACKLOOP 4 0 0 GPS 2 THUMBSIZE 2 ]]
|viewerconfig    = #C [[ THUMBSIZE 2 ZOOM 20 GPS 2 ]]
|apgcode          = xp4_gg0g88bbgz11078c9a7066zy033
|apgcode          = xp4_gg0g88bbgz11078c9a7066zy033
|apgcode2        = xp4_c4owggml56z09f0fghkif0cczy166
|apgcode2        = xp4_c4owggml56z09f0fghkif0cczy166
Line 34: Line 35:
On April 22, {{year|2016}}, [[Martin Grant]] provided a [[glider synthesis]] for this oscillator. Using the same precursor, the two routes to pinwheel and clock 2 diverge in the middle.<ref name="post30315" />
On April 22, {{year|2016}}, [[Martin Grant]] provided a [[glider synthesis]] for this oscillator. Using the same precursor, the two routes to pinwheel and clock 2 diverge in the middle.<ref name="post30315" />


==See also==
== See also ==
*[[Clock 2]]
* [[Clock 2]]
*[[Sixty-nine]]
* [[Sixty-nine]]
* [[p11 pinwheel]]


==References==
== References ==
<references>
<references>
<ref name="post30315">{{LinkForumThread
<ref name="post30315">{{LinkForumThread
Line 49: Line 51:
</references>
</references>


==External links==
== External links ==
{{LinkLexicon|lex_p.htm#pinwheel}}
{{LinkLexicon|lex_p.htm#pinwheel}}
{{LinkCatagolue|xp4_gg0g88bbgz11078c9a7066zy033}}
{{LinkCatagolue|xp4_gg0g88bbgz11078c9a7066zy033}}
{{LinkPentadecathlonObject|35P4.10}}
{{LinkPentadecathlonObject|35P4.10}}


{{Symmetry|osc=turn90}}
__NOTOC__
__NOTOC__

Latest revision as of 02:50, 18 September 2025

Pinwheel
6b2o4b$6b2o4b2$4b4o4b$2obo4bo3b$2obo2bobo3b$3bo3b2ob2o$3bobo2bob2o$4b 4o4b2$4b2o6b$4b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ THUMBSIZE 2 ZOOM 20 GPS 2 ]]
View animated image
View static image
Pattern type Oscillator
Oscillator type Billiard table
Family Pinwheel
Number of cells 35
Bounding box 12 × 12
Period 4 (mod: 1)
Heat 4.0
Volatility 0.20 | 0.20
Kinetic symmetry nrk
Discovered by Simon Norton
Year of discovery 1970

Pinwheel (or Catherine wheel[1]) is a period-4 oscillator found by Simon Norton in April 1970.[2] It is a billiard table configuration and possibly the first period 4 oscillator discovered. Later, another billiard table clock 2 was found, which has the same stator as pinwheel.

On April 22, 2016, Martin Grant provided a glider synthesis for this oscillator. Using the same precursor, the two routes to pinwheel and clock 2 diverge in the middle.[3]

See also

References

  1. ↑ "Catherine wheel". The Life Lexicon. Stephen Silver. Retrieved on December 3, 2018.
  2. ↑ Dean Hickerson's oscillator stamp collection. Retrieved on March 14, 2020.
  3. ↑ Martin Grant (April 22, 2016). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums


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