Difference between revisions of "Traffic light"
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{{Oscillator|name=Traffic light|pname=trafficlight|p=2| | {{Oscillator | ||
The '''traffic light''' is a common formation of four [[blinker| | |name = Traffic light | ||
|pname = trafficlight | |||
|type = Constellation | |||
|c = 12 | |||
|bx = 9 | |||
|by = 9 | |||
|p = 2 | |||
|m = 2 | |||
|h = 16 | |||
|v = 0.80 | |||
|rulemin = B3/S2 | |||
|rulemax = B345678/S02345678 | |||
|rulespecial = [[Conway's Game of Life|Conway Life]], [[HighLife]] | |||
|synthesis = 2 | |||
|synthesisRLE = true | |||
|plaintext = true | |||
|rle = true | |||
|apgcode = xp2_s01110szw222 | |||
|animated = true | |||
|viewerconfig = #C [[ LOOP 2 GPS 2 THUMBSIZE 2 ]] | |||
}} | |||
The '''traffic light''' is a common formation of four [[blinker]]s and is the most common member of the [[familiar fours]], also being the only one made from [[oscillator]]s. A common predecessor is the [[T-tetromino]]. Although it behaves the same in some important non-standard [[rules]] such as [[HighLife]] as it does in [[Conway's Game of Life|standard Life]], it does not appear nearly as frequently in many of those rules due to its common [[predecessor]]s being unstable.<ref>[http://www.tip.net.au/~dbell/articles/HighLife.zip HighLife - An Interesting Variant of Life] by David Bell (.zip file)</ref> | |||
Drawing a single cell in the middle of the traffic light while it is in its + phase will eat the whole traffic light leaving nothing behind. | |||
==See also== | ==See also== | ||
*[[Blinker]] | |||
*[[Interchange]] | |||
*[[Skewed traffic light]] | |||
*[[Traffic circle]] | *[[Traffic circle]] | ||
*[[Traffic jam]] | *[[Traffic jam]] | ||
==References== | |||
<references /> | |||
==External links== | ==External links== | ||
{{LinkWeisstein|TrafficLight.html}} | |||
{{LinkLexicon|lex_t.htm#trafficlight}} | |||
{{LinkCatagolue|xp2_s01110szw222|format=pseudo-object}} | |||
{{Symmetry|full}} | |||
Revision as of 22:16, 5 June 2019
| Traffic light | |||||||||
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| View static image | |||||||||
| Pattern type | Constellation Oscillator | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Number of cells | 12 | ||||||||
| Bounding box | 9 × 9 | ||||||||
| Period | 2 | ||||||||
| Mod | 2 | ||||||||
| Heat | 16 | ||||||||
| Volatility | 0.80 | ||||||||
| Strict volatility | 0.80 | ||||||||
| Discovered by | Unknown | ||||||||
| Year of discovery | Unknown | ||||||||
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The traffic light is a common formation of four blinkers and is the most common member of the familiar fours, also being the only one made from oscillators. A common predecessor is the T-tetromino. Although it behaves the same in some important non-standard rules such as HighLife as it does in standard Life, it does not appear nearly as frequently in many of those rules due to its common predecessors being unstable.[1]
Drawing a single cell in the middle of the traffic light while it is in its + phase will eat the whole traffic light leaving nothing behind.
See also
References
- ↑ HighLife - An Interesting Variant of Life by David Bell (.zip file)
External links
- Traffic light at the Life Lexicon
- Traffic light at Adam P. Goucher's Catagolue (pseudo-object)
Categories:
- Patterns
- Oscillators with 12 cells
- Periodic objects with minimum population 12
- Patterns with 12 cells
- Patterns that can be constructed with 2 gliders
- Oscillators
- Constellations
- Constellations with 12 cells
- Oscillators with period 2
- Oscillators with mod 2
- Oscillators with heat 16
- Oscillators with volatility 0.80
- Oscillators with strict volatility 0.80
- Patterns with complete square symmetry