Difference between revisions of "R2-D2"
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{{Oscillator | {{Oscillator | ||
|name | |name = R2D2 | ||
|pname | |pname = r2d2 | ||
|f1 | |f1 = Billiard table | ||
|c | |c = 29 | ||
|bx | |bx = 11 | ||
|by | |by = 10 | ||
|p | |p = 8 | ||
|h | |m = 4 | ||
|v | |h = 2.0 | ||
|discoverer | |v = 0.22 | ||
|rulemin | |sv = 0.22 | ||
|rulemax | |discoverer = Peter Raynham | ||
|rulespecial | |rulemin = B3/S23 | ||
| | |rulemax = B378/S0235678 | ||
| | |rulespecial = [[Conway's Game of Life|Conway Life]] | ||
|plaintext | |isorulemin = B3eiy/S2cik3-jknq | ||
|rle | |isorulemax = B2kn34-aejn5-jry6-ik78/S01c234-n5678 | ||
|animated | |plaintext = true | ||
|apgcode | |rle = true | ||
|animated = yes | |||
|apgcode = xp8_gg0s252s0ggz11078m87011 | |||
|pentadecathlonid = 29P8.2 | |||
|viewerconfig = #C [[ GPS 4 ZOOM 20 LOOP 8 ]] | |||
}} | }} | ||
'''R2D2''' is a | '''R2D2''' is a {{period|8}} [[oscillator]] that was found in the form shown in the infobox at right, but not named, by [[Peter Raynham]] in the early 1970s. The name derives from a form with a larger and less symmetric [[stator]] discovered later by [[Noam Elkies]] in August {{year|1994}}, shown below. | ||
[[File: | [[File:R2d2alternatestator.png|frame|center|Elkies' R2D2 stator from 1994 (which inspired the name)]] | ||
==See also== | ==See also== | ||
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{{LinkLexicon|lex_r.htm#r2d2}} | {{LinkLexicon|lex_r.htm#r2d2}} | ||
{{LinkCatagolue|xp8_gg0s252s0ggz11078m87011}} | {{LinkCatagolue|xp8_gg0s252s0ggz11078m87011}} | ||
{{LinkPentadecathlonObject|29P8.2}} | |||
{{Symmetry|orthogonal2|osc=flip}} | {{Symmetry|orthogonal2|osc=flip}} | ||
Revision as of 22:25, 7 July 2019
| R2D2 | |||||||||
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| Pattern type | Oscillator | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Oscillator type | Billiard table | ||||||||
| Number of cells | 29 | ||||||||
| Bounding box | 11 × 10 | ||||||||
| Period | 8 | ||||||||
| Mod | 4 | ||||||||
| Heat | 2.0 | ||||||||
| Volatility | 0.22 | ||||||||
| Strict volatility | 0.22 | ||||||||
| Discovered by | Peter Raynham | ||||||||
| Year of discovery | Unknown | ||||||||
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R2D2 is a period-8 oscillator that was found in the form shown in the infobox at right, but not named, by Peter Raynham in the early 1970s. The name derives from a form with a larger and less symmetric stator discovered later by Noam Elkies in August 1994, shown below.
Elkies' R2D2 stator from 1994 (which inspired the name)
See also
External links
- R2-D2 at the Life Lexicon
- 29P8.2 at Heinrich Koenig's Game of Life Object Catalogs
Categories:
- Patterns
- Oscillators with 29 cells
- Periodic objects with minimum population 29
- Patterns with 29 cells
- Patterns found by Peter Raynham
- Oscillators
- Billiard tables
- Oscillators with period 8
- Oscillators with mod 4
- Oscillators with heat 2
- Oscillators with volatility 0.22
- Oscillators with strict volatility 0.22
- Patterns with bilateral orthogonal symmetry
- Flipping oscillators