|View animated image|
|View static image|
|Number of cells||43|
|Bounding box||24 × 7|
|Discovered by||Robert Wainwright|
|Year of discovery||1984|
Carnival shuttle is a period-12 oscillator that was found by Robert Wainwright in September 1984. The shuttle itself is a reaction between two t-tetrominos, whose stability requires the suppression of one birth per period at both ends of the shuttle.
As shuttles can be placed head to head, it can be viewed as a finite segment of an extensible wick, and there are many ways to terminate this wick. The earliest version used middleweight emulators at the end, which got reduced to the much smaller monograms shown in the infobox. Other period-4 sparkers including T-nosed p4 and blocked p4-3 work. More recent stabilizations include the stable beehive push catalyst by Tanner Jacobi in 2020 and p3 pipsquirters by 83bismuth38 in 2021.
In addition to pushing a beehive, adjacent shuttles can hassle more complex components involving paired beehives, loaves or traffic lights (interchange). The interchange part emits domino sparks, which was used to create the first known non-trivial period-24 oscillator, 186P24. The loaf-hassling reaction is similar to the catalyst in the stable twirling T-tetsons 2.
|A collection of carnival shuttle reactions|
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RLE: here Plaintext: here
- Dean Hickerson's oscillator stamp collection. Retrieved on March 14, 2020.
- praosylen (December 20, 2020). Re: Oscillator Discussion Thread (discussion thread) at the ConwayLife.com forums
- 83bismuth38 (October 22, 2021). Re: Oscillator Discussion Thread (discussion thread) at the ConwayLife.com forums
- GUYTU6J (April 4, 2022). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
- 43P12.1 at Heinrich Koenig's Game of Life Object Catalogs