Pi orbital
Pi orbital | |||||||||||
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Pattern type | Oscillator | ||||||||||
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Number of cells | 305 | ||||||||||
Bounding box | 59×59 | ||||||||||
Period | 168 | ||||||||||
Mod | 42 | ||||||||||
Heat | 270.7 | ||||||||||
Volatility | 0.91 | ||||||||||
Strict volatility | 0.61 | ||||||||||
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 on August 22, 1995.[1] It consists of four 42-generation 90-degree pi heptomino turns, each using a crown and a block. A second pi heptomino can be inserted to reduce the period to 84, but no further reduction (such as 168/3=56) is allowed to work. Its name could be a reference to the pi orbital in chemistry.
On March 26, 2009 Nicolay Beluchenko found a relatively small period-12 sparker, 44P12.3, that could replace the crown.[2] On April 6, 2010 Matthias Merzenich discovered the blocked p4-4 that also supports the oscillator.[3] Currently, the exact pi-turning reaction has not been made into a stable conduit yet.[4]
If the block in a turn is removed, another block will be dropped nearby. A block pull can restore it, as is shown in the final step of a glider synthesis of the p12-supported variant by GUYTU6J in December 2020.[5] Meanwhile, the fact makes pi orbital a block factory suitable for stabilizing a honey farm-hassling wick at the same period.[6] Furthermore, sparking the active region before settling into the block creates a B-heptomino,[7] and welding a BFx59H to the blocked p4-4 to release a Herschel is possible.[8]
Image gallery
See also
References
- ↑ Jason Summers' jslife pattern collection. Retrieved on March 14, 2020.
- ↑ Heinrich Koenig (April 14, 2009). "New Oscillators". Game of Life News. Retrieved on September 15, 2021.
- ↑ Adam P. Goucher (January 3, 2011). "A plethora of p4 hasslers". Game of Life News. Retrieved on September 15, 2021.
- ↑ Dave Greene (April 10, 2017). Re: Stable signal converters (discussion thread) at the ConwayLife.com forums
- ↑ GUYTU6J (December 27, 2020). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
- ↑ Matthias Merzenich (July 7, 2021). Re: Oscillator Discussion Thread (discussion thread) at the ConwayLife.com forums
- ↑ wwei23 (December 12, 2020). Re: Gun Discussion Thread (discussion thread) at the ConwayLife.com forums
- ↑ Adam P. Goucher (December 15, 2020). Re: Gun Discussion Thread (discussion thread) at the ConwayLife.com forums
External links
- Pi orbital at the Life Lexicon
- Pi orbital at Adam P. Goucher's Catagolue (extended)
- Pi orbital with 44P12.3 at Adam P. Goucher's Catagolue (extended)
- 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 mod 42
- Oscillators with heat between 200 and 299
- Oscillators with volatility 0.91
- Oscillators with strict volatility 0.61
- Non-flipping oscillators that turn 90 degrees
- Pi-heptomino hasslers