Difference between revisions of "R2-D2"
Jump to navigation
Jump to search
m (Renamed file, and refactored some links) |
m (viewerconfig) |
||
| (One intermediate revision by one other user not shown) | |||
| Line 22: | Line 22: | ||
|apgcode = xp8_gg0s252s0ggz11078m87011 | |apgcode = xp8_gg0s252s0ggz11078m87011 | ||
|pentadecathlonid = 29P8.2 | |pentadecathlonid = 29P8.2 | ||
|viewerconfig = #C [[ GPS 4 ZOOM 20 LOOP 8 ]] | |||
}} | }} | ||
'''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 by [[Noam Elkies]] in August {{year|1994}}, shown below. | '''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:R2d2alternatestator.png|frame|center|Elkies' R2D2 stator from 1994 (which inspired the name)]] | [[File:R2d2alternatestator.png|frame|center|Elkies' R2D2 stator from 1994 (which inspired the name)]] | ||
Revision as of 22:25, 7 July 2019
| R2D2 | |||||||||
| View animated image | |||||||||
| View static image | |||||||||
| 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 | ||||||||
| |||||||||
| |||||||||
| |||||||||
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