P44 pi-heptomino hassler
| p44 pi-heptomino hassler | |||||||||
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| Pattern type | Oscillator | ||||||||
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| Number of cells | 102 | ||||||||
| Bounding box | 31 × 44 | ||||||||
| Period | 44 (mod: Unknown) | ||||||||
| Heat | 93.3 | ||||||||
| Volatility | 0.91 | Unknown | ||||||||
| Kinetic symmetry | Unspecified | ||||||||
| Discovered by | David Buckingham | ||||||||
| Year of discovery | 1992 | ||||||||
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P44 pi-heptomino hassler is a period 44 oscillator discovered by David Buckingham on April 2, 1992.[1] It was improved to the form shown here by Noam Elkies in April 1996. The oscillator consists of two pi-heptominos being hassled by two heavyweight emulators and four blocks. Buckingham used two copies of this oscillator to make the first period 44 glider gun. This became obsolete in October 1996 when Buckingham found a gun that only used one copy of the oscillator. In 1994 Dean Hickerson found a way to double the oscillator's period by adding two molds, creating the first period 88 oscillator.
Image gallery
 Buckingham's original period 44 gun and its subsequent improvement, as well as a small middleweight spaceship gun found by Dietrich Leithner Download RLE: click here |
See also
References
External links
Categories:
- Patterns
- Oscillators with between 100 and 109 cells
- Periodic objects with minimum population between 100 and 109
- Patterns with between 100 and 109 cells
- Patterns found by David Buckingham
- Patterns found in 1992
- Patterns that can be constructed with between 60 and 69 gliders
- Oscillators
- Oscillators with period 44
- Oscillators with heat 93
- Oscillators with volatility 0.91