p11 bumper
| p11 bumper | |||||||||
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| Pattern type | Reflector Oscillator | ||||||||
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| Number of cells | 51 | ||||||||
| Bounding box | 24 × 13 | ||||||||
| Angle | 90° | ||||||||
| Period | 11 | ||||||||
| Heat | Unknown | ||||||||
| Colour | Colour-preserving | ||||||||
| Discovered by | Tanner Jacobi Matthias Merzenich | ||||||||
| Year of discovery | 2016 | ||||||||
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p11 bumper is a periodic colour-preserving glider reflector with a minimum repeat time of 44 ticks. For a small colour-changing periodic glider reflector, see p11 bouncer. A stable Snark reflector can be substituted for any bumper. This changes the timing of the output glider, which can be useful for rephasing periodic glider streams.
A period-22 bumper can be constructed using Jason's p22, but the p11 variant is smaller in terms of bounding box and is compatible with all the same glider streams. In practice, even the p11 bumper is not useful with regular input streams below period 121, because lower-period bumpers can be used to reflect all smaller multiples of 11 for which the bumper reaction can be made to work.
On June 29, 2024, KtT noticed that the p11 thumb can be used in place of the original oscillator, reducing the population from 85 to 51 and the height from 17 to 13.[1]
| The original form (click above to open LifeViewer) |
External links
- p11 bumper at the Life Lexicon
References
- ↑ KtT (June 29, 2024). Re: Oscillator Discussion Thread
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