Pi orbital: Difference between revisions
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{{Oscillator|name=Pi orbital|pname=piorbital|bx=59|by=59|h=270.7|p=168|c=305|discoverer=Noam Elkies|discoveryear=1995|life105=true|life106=true|plaintext=true|rle=true|animated=true|v=0.91}} | {{Oscillator|name=Pi orbital|pname=piorbital|bx=59|by=59|h=270.7|p=168|c=305|discoverer=Noam Elkies|discoveryear=1995|life105=true|life106=true|plaintext=true|rle=true|animated=true|v=0.91}} | ||
'''Pi orbital''' is a [[period]] [[:Category:Oscillators with period 168|168]] [[oscillator]] that was found by [[:Category:Patterns found by Noam Elkies|Noam Elkies]] in August [[:Category:Patterns found in 1995|1995]]. It works by using four [[crown]]s and four [[block]]s to turn a [[pi heptomino]] ninety degrees every 42 [[generation]]s. A second pi heptomino can be inserted to reduce the period to 84. On March 26, [[:Category:patterns found in 2009|2009]] [[Nicolay Beluchenko]] found a relatively small period [[:Category:Oscillators with period 12|12]] [[spark]]er that could replace the crowns. | '''Pi orbital''' is a [[period]] [[:Category:Oscillators with period 168|168]] [[oscillator]] that was found by [[:Category:Patterns found by Noam Elkies|Noam Elkies]] in August [[:Category:Patterns found in 1995|1995]]. It works by using four [[crown]]s and four [[block]]s to turn a [[pi heptomino]] ninety degrees every 42 [[generation]]s. A second pi heptomino can be inserted to reduce the period to 84. On March 26, [[:Category:patterns found in 2009|2009]] [[Nicolay Beluchenko]] found a relatively small period [[:Category:Oscillators with period 12|12]] [[spark]]er that could replace the crowns. On April 6, [[:Category:patterns found in 2010|2010]] [[Matthias Merzenich]] the [[Blocked_p4-4|Blocked p4-4]] | ||
period 4 oscillator that also supports the oscillator. | |||
==Image gallery== | ==Image gallery== | ||
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|[[Image:piorbit_gen27.png|framed|left|Generation 27 reveals the pi heptomino]] | |[[Image:piorbit_gen27.png|framed|left|Generation 27 reveals the pi heptomino]] | ||
|[[Image:piorbital_alt.png|framed|left|An alternate version of pi orbital using Nicolay Beluchenko's period 12 oscillator<br/>{{JavaRLE|alternatepiorbital|brief}}]] | |[[Image:piorbital_alt.png|framed|left|An alternate version of pi orbital using Nicolay Beluchenko's period 12 oscillator<br/>{{JavaRLE|alternatepiorbital|brief}}]] | ||
|[[Image:P168.PNG|framed|left|form by Matthias Merzenich]] | |||
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Revision as of 20:37, 16 August 2011
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| Pattern type | Oscillator | ||||||
|---|---|---|---|---|---|---|---|
| Number of cells | 305 | ||||||
| Bounding box | 59 × 59 | ||||||
| Period | 168 (mod: Unknown) | ||||||
| Heat | 270.7 | ||||||
| Volatility | 0.91 | Unknown | ||||||
| Kinetic symmetry | Unspecified | ||||||
| Discovered by | Noam Elkies | ||||||
| Year of discovery | 1995 | ||||||
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Pi orbital is a period 168 oscillator that was found by Noam Elkies in August 1995. It works by using four crowns and four blocks to turn a pi heptomino ninety degrees every 42 generations. A second pi heptomino can be inserted to reduce the period to 84. On March 26, 2009 Nicolay Beluchenko found a relatively small period 12 sparker that could replace the crowns. On April 6, 2010 Matthias Merzenich the Blocked p4-4 period 4 oscillator that also supports the oscillator.
Image gallery
 |
 RLE: here |
 |
See also
External links
- Pi orbital at the Life Lexicon
Categories:
- Patterns
- Oscillators with between 300 and 399 cells
- Periodic objects with minimum population between 300 and 399
- Patterns with between 300 and 399 cells
- Patterns found by Noam Elkies
- Patterns found in 1995
- Oscillators
- Oscillators with period 168
- Oscillators with heat between 200 and 299
- Oscillators with volatility 0.91