Great on-off

Great on-off
2b2o4b$bo2bo3b$bobo4b$2obo2bob$4b2obo$7bo$4b3ob$4bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ LOOP 2 GPS 2 THUMBSIZE 2 ]]
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Pattern type	Oscillator
Oscillator type	Babbling brook
Number of cells	18
Bounding box	8×8
Frequency class	22.4
Period	2
Mod	2
Heat	2
Volatility	0.10
Strict volatility	0.10
Rotor type	Diagonal on-off
Discovered by	Unknown
Year of discovery	Unknown
Rules Outer-totalistic rules B3/S23 – B378/S01235678 Important rules Conway Life # of rules 28 = 256 Isotropic rules B3j/S2-in3jnr – B2ik34-aijw5-kqr6-n78/S01234-k5678
Glider synthesis Fewest gliders 5 Catagolue-generated RLE greatonoff_synth.rle Uploaded synthesis RLE greatonoff_synth.rle
Pattern files Plaintext greatonoff.cells RLE greatonoff.rle
Identifiers apgcode xp2_g8gid1e8z1226 Pentadecathlon ID 18P2.475

The great on-off (or pincers) is a period-2 oscillator. It has the same rotor as the beacon and resembles two welded loops.

Commonness

The great-on-off is the ninth most common naturally-occurring oscillator in Achim Flammenkamp's census, being less common than the quadpole but more common than the figure eight. It is the ninth most common oscillator on Adam P. Goucher's Catagolue.

The great on-off typically forms via a teardrop hitting a traffic light.

x = 12, y = 12, rule = B3/S23 9b2o$8bo2bo$8bo2bo$8b3o2$2b3o2$o5bo$o5bo$o5bo2$2b3o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ GPS 8 THUMBSIZE 2 ]]

Teardrop + traffic light → great on-off (click above to open LifeViewer)

External links

• Great on-off at the Life Lexicon

• Great on-off at Adam P. Goucher's Catagolue

• 18P2.475 at Heinrich Koenig's Game of Life Object Catalogs