Eureka
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| Eureka | |||||||||
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| Pattern type | Oscillator | ||||||||
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| Oscillator type | Shuttle | ||||||||
| Number of cells | 28 | ||||||||
| Bounding box | 18 × 15 | ||||||||
| Period | 30 | ||||||||
| Mod | 15 | ||||||||
| Heat | 22.4 | ||||||||
| Volatility | 0.91 | ||||||||
| Strict volatility | 0.91 | ||||||||
| Discovered by | David Buckingham | ||||||||
| Year of discovery | 1980 | ||||||||
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Eureka (or pre-pulsar shuttle 30) is a period 30 pre-pulsar shuttle oscillator in which two 15-generation pre-pulsar shuttle mechanisms each composed of two tubs hassle a pre-pulsar. It was found by David Buckingham in August 1980. A slightly different period 30 shuttle can be created by shifting the top half of the shuttle two cells to the left or right (see below). This allows the outer tubs to be replaced with blocks, creating a domino sparker suitable for a p30 bouncer from both ends, shifted 15 gens apart.
Image gallery
 Generation 1 of Eureka, which shows that the object being hassled is really a pre-pulsar |
External links
- Eureka at the Life Lexicon
- 28P30.1 at Heinrich Koenig's Game of Life Object Catalogs
Variants
Categories:
- Patterns
- Oscillators with 28 cells
- Periodic objects with minimum population 28
- Patterns with 28 cells
- Patterns found by David Buckingham
- Patterns found in 1980
- Patterns that can be constructed with 12 gliders
- Oscillators
- Shuttles
- Oscillators with period 30
- Oscillators with mod 15
- Oscillators with heat 22
- Oscillators with volatility 0.91
- Oscillators with strict volatility 0.91
- Patterns with bilateral orthogonal symmetry
- Flipping oscillators
- Sparkers
- Sparkers with period 30
- Strong sparkers
- Semi-natural periodic objects