Pi orbital: Difference between revisions
Jump to navigation
Jump to search
Apple Bottom (talk | contribs) infobox |
Apple Bottom (talk | contribs) LinkCatagolue |
||
| Line 37: | Line 37: | ||
==External links== | ==External links== | ||
{{LinkLexicon|lex_p.htm#piorbital}} | {{LinkLexicon|lex_p.htm#piorbital}} | ||
{{LinkCatagolue|xp168_y965la8ceeeec8al56zy3888o040o11wo4xg190ggggy2ccy6szy72441x161x38841ydc2ghh4y0o8gzy3ggywo0cgy0jpu121zy311yw10jggx7fvzy5syv3408o2w321e96z697o4cw4hhg2cyv3zxvvuy0gc0oyh27dod72y4oozo4o79cwggg301z011y02o8043yagggo211sx8m8xo224gzy43y633y7p8y021w8o10201111zyq6aa5137777315aa6|format=extended}} | |||
{{Symmetry|osc=turn90}} | {{Symmetry|osc=turn90}} | ||
Revision as of 11:08, 10 October 2016
| Pi orbital | |||||||
| View animated image | |||||||
| View static image | |||||||
| 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 | ||||||
| |||||||
| |||||||
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 discovered 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
- Pi orbital at Adam P. Goucher's Catagolue (extended)
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
- Outer-totalistically endemic patterns
- Oscillators
- Oscillators with period 168
- Oscillators with heat between 200 and 299
- Oscillators with volatility 0.91
- Non-flipping oscillators that turn 90 degrees