Spark coil

The spark coil is a period-2 oscillator found in 1971.[1] Despite its name, it does not produce sparks; however, the rotor resembles an electric spark.

Spark coil
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Pattern type Oscillator
Oscillator type Babbling brook
Number of cells 18
Bounding box 8×5
Frequency class 24.0
Period 2
Mod 2
Heat 2
Volatility 0.10
Strict volatility 0.10
Rotor type Orthogonal on-off
Discovered by Unknown
Year of discovery 1971

Welded together with minimal separating stators, it can be extended indefinitely along its axis, so that it is the first in a series that continues with the piston and the long piston. It can also be arranged in two directions, as shown at Agar#Tile_agars.

Commonness

Spark coil is the eleventh most common naturally-occurring oscillator in Achim Flammenkamp's census, being less common than the figure eight but more common than the mold.[2]

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See also

References
  1. Dean Hickerson's oscillator stamp collection. Retrieved on March 14, 2020.
  2. Achim Flammenkamp (September 7, 2004). "Most seen natural occurring ash objects in Game of Life". Retrieved on January 15, 2009.
  • 18P2.28 at Heinrich Koenig's Game of Life Object Catalogs
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