Champagne glass
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| Champagne glass | |||||||||
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| Pattern type | Oscillator | ||||||||
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| Oscillator type | Billiard table | ||||||||
| Number of cells | 45 | ||||||||
| Bounding box | 15 × 12 | ||||||||
| Period | 22 | ||||||||
| Mod | 11 | ||||||||
| Heat | 3.1 | ||||||||
| Volatility | 0.31 | ||||||||
| Strict volatility | 0.28 | ||||||||
| Discovered by | Dean Hickerson | ||||||||
| Year of discovery | 1997 | ||||||||
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Champagne glass (or 45P22.1) is a period-22 billiard table oscillator discovered by Dean Hickerson using his drifter search program on April 19, 1997,[1] being found only two days after 168P22.1. In terms of its 45 cells, it is the second smallest known non-trivial period 22 oscillator, behind Jason's p22 with only 36 cells.[2] It contains a bookend acting as an induction coil.
Whereas its rotor reflects itself after half a period, saving two live cells by using a bookend rather than a house as an induction coil breaks the overall symmetry of the figure.
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References
- ↑ Dean Hickerson's "New billiard tables" oscillator collection
- ↑ "Class 2 Objects Catalog". Retrieved on April 9, 2009.
External links
- Champagne glass at Adam P. Goucher's Catagolue
- 45P22.1 at Heinrich Koenig's Game of Life Object Catalogs
- Champagne glass at Wikipedia (name origin)
Categories:
- Patterns
- Oscillators with 45 cells
- Periodic objects with minimum population 45
- Patterns with 45 cells
- Patterns found by Dean Hickerson
- Patterns found in 1997
- Oscillators
- Billiard tables
- Oscillators with period 22
- Oscillators with mod 11
- Oscillators with heat 3
- Oscillators with volatility 0.31
- Oscillators with strict volatility 0.28
- Flipping oscillators