Spark coil

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Spark coil
2o4b2o$obo2bobo$2bo2bo2b$obo2bobo$2o4b2o! #C [[ THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ GPS 2 THUMBSIZE 2 ]]
Pattern type Oscillator
Oscillator type Babbling brook
Number of cells 18
Bounding box 8×5
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

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

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.


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.[1]

See also


  1. Achim Flammenkamp (September 7, 2004). "Most seen natural occurring ash objects in Game of Life". Retrieved on January 15, 2009.

External links