Clock
Clock  
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Pattern type  Oscillator  

Oscillator type  Muttering moat  
Family  Clock  
Number of cells  6  
Bounding box  4×4  
Frequency class  19.4  
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  such extensions lose symmetry.
Commonness
Clock is the sixth most common oscillator in Achim Flammenkamp's census, being somewhat less frequent than the pentadecathlon, but much rarer than the blinker, toad, beacon or pulsar. It is surprisingly rare considering its small size.^{[1]} It is also the sixtysecond most common object on Adam P. Goucher's Catagolue.^{[2]}
In other rules
In outertotalistic 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 nontotalistic rules; for instance, in B3j/S1, clock cycles with one phase of toad. This gives at least four different p2 sequences:
B3/S3 to B35678/S02345678  B34/S to B345678/S0245678 
B4/S1 to B45678/S01245678  B3j/S1 to B2cin3nq4j5678/S012k3y45678 
References
 ↑ Achim Flammenkamp (September 7, 2004). "Most seen natural occurring ash objects in Game of Life". Retrieved on January 15, 2009.
 ↑ Adam P. Goucher. "Statistics". Catagolue. Retrieved on June 24, 2016.
See also
External links
 Clock at the Life Lexicon
 6P2.3 at Heinrich Koenig's Game of Life Object Catalogs
 Patterns
 Patterns with Catagolue frequency class 19.4
 Natural periodic objects
 Oscillators with 6 cells
 Patterns with 6 cells
 Patterns found by Simon Norton
 Patterns found in 1970
 Patterns that can be constructed with 4 gliders
 Oscillators
 Periodic objects with minimum population 6
 Clock variants
 Muttering moats
 Oscillators with period 2
 Oscillators with mod 1
 Oscillators with heat 8
 Oscillators with volatility 0.80
 Oscillators with strict volatility 0.80
 Oscillators with rotor Clock
 Patterns with 180degree rotation symmetry
 Flipping oscillators
 Sparkers
 Sparkers with period 2
 Dot sparkers
 Weak sparkers