Pipsquirter
A pipsquirter (or simply squirter[1]) is an oscillator that produces a domino spark that is orientated parallel to the direction from which it is produced (in contrast to domino sparkers like the pentadecathlon and heavyweight spaceship, which produce domino sparks perpendicular to the direction of production). Most of the useful pipquirters have been found by Noam Elkies, including p6 pipsquirter and p7 pipsquirter.
Much like the T-noses, the edge of the domino farthest from the oscillator must be off for all other cycles of the oscillator to qualify as a pipsquirter, as said cell being present during any other generations has the capability to be disruptive to catalysis. As such, patterns such as this p29 shuttle, despite producing a perpendicular domino spark, have it be generated through dying debris in the same place.
Pipsquirters are known for periods 3, 4, 5, 6, 7, 12, 15, 21, and 24; the p21 is only a pipsquirter by coincidence, but is still very useful, and the p24 has low clearance.
Gallery
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See also
References
- ↑ "Squirter". The Life Lexicon. Stephen Silver. Retrieved on May 23, 2009.
External links
- Pipsquirter at the Life Lexicon