p3 bumper
| p3 bumper | |||||||||
| View static image | |||||||||
| Pattern type | Reflector Oscillator | ||||||||
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| Number of cells | 38 | ||||||||
| Bounding box | 23 × 14 | ||||||||
| Angle | 90° | ||||||||
| Period | 3 | ||||||||
| Heat | 23.3 | ||||||||
| Colour | Colour-preserving | ||||||||
| Discovered by | Arie Paap Tanner Jacobi | ||||||||
| Year of discovery | 2018 | ||||||||
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p3 bumper is a variant of Tanner Jacobi's bumper found by Arie Paap in April 2018.[1][2] It has a repeat time of 36 ticks, and the timing of the output glider is different from the stable Snark reflector, making it useful for rephasing periodic glider streams.
The form shown in the infobox uses a 24-cell p3 oscillator[3] and has a smaller population. This variant was used in a 152-cell p57 bumper loop,[4] the formerly smallest period-57 oscillator, as well as the smallest p69, p81 and p129 ones. All of these have been superseded by 146-cell glider shuttles with a new mechanism.[5]
| 152-cell p57 bumper loop (click above to open LifeViewer) RLE: here Plaintext: here Catagolue: here |
Variants
An alternative form[6] of the period-3 sparker based on the caterer is shown below to the left. For bounding box optimization purposes, it is also possible to replace the eater 1 with a 33P3.1, saving one row along the south edge at the cost of a higher population, as shown to the right. This also works with a p6 bumper, p9 bumper, or p15 bumper.
| p3 bumper with an alternative p3 sparker (click above to open LifeViewer) RLE: here Plaintext: here |
| p3 bumper with 33P3.1 (click above to open LifeViewer) RLE: here Plaintext: here |
On March 28, 2025, Scorbie and iNoMed found four variants that interact with the traffic light predecessor one generation later, analogously to the eater-block frob in the p4 bumper.
| a p51 loop with four related p3 bumpers, of which the left was found by Scorbie[7] and the top,[8] right,[9] and bottom[10] were found by iNoMed (click above to open LifeViewer) Catagolue: here |
References
- ↑ Arie Paap (April 4, 2018). Re: Thread for your unsure discoveries (discussion thread) at the ConwayLife.com forums
- ↑ Arie Paap (April 6, 2018). Re: Execution of Old Guns by Variable-Speed Firing Squad (discussion thread) at the ConwayLife.com forums
- ↑ xp3_y2gg0c871zwq2hjg5z112 at Adam P. Goucher's Catagolue
- ↑ Entity Valkyrie (October 26, 2018). Re: Oscillator Discussion Thread (discussion thread) at the ConwayLife.com forums
- ↑ Jeremy Tan (January 23, 2022). "p3 bumper loops replaced by 22hd reflectors". GitHub. Retrieved on June 3, 2022.
- ↑ xp3_2226g10ez3pabkilb256zy01 at Adam P. Goucher's Catagolue
- ↑ Scorbie (March 28, 2025). Message in #cgol on the Conwaylife Lounge Discord server
- ↑ iNoMed (March 28, 2025). Message in #cgol on the Conwaylife Lounge Discord server
- ↑ iNoMed (March 28, 2025). Message in #cgol on the Conwaylife Lounge Discord server
- ↑ iNoMed (March 28, 2025). Message in #cgol on the Conwaylife Lounge Discord server
External links
- p3 bumper at the Life Lexicon
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