Clock

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Clock
2bo$obo$bobo$bo! #C [[ THEME 6 GRID GRIDMAJOR 0 THUMBLAUNCH AUTOSTART ]] #C [[ LOOP 2 GPS 2 THUMBSIZE 2 ]]
Pattern type Oscillator
Oscillator type Muttering moat
Family Clock
Number of cells 6
Bounding box 4×4
Period 2
Mod 1
Heat 8
Volatility 0.80
Strict volatility 0.80
Rotor type Clock
Discovered by Simon Norton
Year of discovery 1970

Clock was found by Simon Norton in May 1970. It serves as the logo pattern for WinLifeSearch.

Extensions of the oscillator can be seen as stabilisations for the zebra stripes/chicken wire agar.

Commonness

Clock is the fifth or sixth most common oscillator in Achim Flammenkamp's census, being about as frequent as the pentadecathlon, but much less frequent than the blinker, toad, beacon or pulsar. It is surprisingly rare considering its small size.[1] It is also the sixty-second most common object on Adam P. Goucher's Catagolue.[2]

In other rules

In outer-totalistic rules, clock can follow at least three different p2 cycles depending on the rule, which all have mod 1.

  • In rules such as B4/S1 the inner two cells oscillate similarly to a duoplet in Seeds.
  • In rules such as B3/S3, the outer cells oscillate (this being the sequence seen in Life).
  • In rules such as B34/S, both of these evolutions take place simultaneously, causing it to evolve into an inverted version of itself and therefore making it a phoenix.

Further sequences are possible in non-totalistic rules; for instance, in B3-nq/S12-k3-y, clock cycles with one phase of toad. This gives at least four different p2 sequences:

Evolution of the clock across different rules
Xp2 2a54 b3s23.gif Xp2 2a54 b34s.gif
B3/S3 to B35678/S02345678 B34/S to B345678/S0245678
Xp2 2a54 b4s1.gif UnknownPattern.png
B4/S1 to B45678/S01245678 B3-nq/S12-k3-y to ?

References

  1. Achim Flammenkamp (September 7, 2004). "Most seen natural occurring ash objects in Game of Life". Retrieved on January 15, 2009.
  2. Adam P. Goucher. "Statistics". Catagolue. Retrieved on June 24, 2016.

See also

External links

  • Clock at Eric Weisstein's Treasure Trove of Life
  • Clock at the Life Lexicon