Spark coil

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
Rules Outer-totalistic rules B3/S23 – B3678/S01235678 Important rules Conway Life, HighLife # of rules 29 = 512 Isotropic rules B3i/S2-cn3enq – B1e2kn34-a5-eq678/S01234-t5678
Glider synthesis Fewest gliders 4 Catagolue-generated RLE sparkcoil_synth.rle Uploaded synthesis RLE sparkcoil_synth.rle
Pattern files Plaintext sparkcoil.cells RLE sparkcoil.rle
Identifiers apgcode xp2_rhewehr Pentadecathlon ID 18P2.28

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.

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.

See also

• Dead spark coil
• House
• Glasses
• Piston

External links

• Spark coil at the Life Lexicon

• Spark coil at Adam P. Goucher's Catagolue

• 18P2.28 at Heinrich Koenig's Game of Life Object Catalogs