Interchange
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| Interchange | |||||||||
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| Pattern type | Constellation Oscillator | ||||||||
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| Number of cells | 18 | ||||||||
| Bounding box | 16 × 9 | ||||||||
| Period | 2 | ||||||||
| Mod | 2 | ||||||||
| Heat | 24 | ||||||||
| Volatility | 0.80 | ||||||||
| Strict volatility | 0.80 | ||||||||
| Discovered by | Hugh Thompson | ||||||||
| Year of discovery | 1971 | ||||||||
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Interchange is a common constellation of six blinkers.
There are two different interchanges; the more common one is displayed to the right. The less common variant has five cells between the left and right halves instead of four.
Two gliders reflected along an axis of symmetry with an even number of rows between them form an interchange. With an odd number of rows, it becomes a bi-block instead.
| Unlike most common sequences which require only five or six cells the minimum number of cells needed to form an interchange is seven (click above to open LifeViewer) RLE: here Plaintext: here |
See also
- Blinker
- Traffic light
- Cap, one of its predecessors
External links
- Interchange at the Life Lexicon
- Small interchange at Adam P. Goucher's Catagolue (pseudo-object)
- Large interchange at Adam P. Goucher's Catagolue (pseudo-object)
Categories:
- Patterns
- Oscillators with 18 cells
- Patterns with 18 cells
- Patterns found by Hugh Thompson
- Patterns found in 1971
- Patterns that can be constructed with 2 gliders
- Constellations
- Constellations with 18 cells
- Oscillators with period 2
- Oscillators with mod 2
- Oscillators with heat 24
- Oscillators with volatility 0.80
- Oscillators with strict volatility 0.80
- Patterns with rectangular orthogonal symmetry