Piston

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Piston
2o7b2o$obo2bo2bobo$2b4o2bo2b$obo2bo2bobo$2o7b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ LOOP 2 GPS 2 THUMBSIZE 2 ]]
Pattern type Oscillator
Number of cells 23
Bounding box 11 × 5
Frequency class 38.9
Period 2
Mod 1
Heat 4
Volatility 0.16
Strict volatility 0.16
Rotor type Orthogonal on-off
Discovered by Unknown
Year of discovery 1971

Piston is a period-2 oscillator found in 1971.[1][2] Its usage is similar to that of the spark coil. It can be extended indefinitely along its axis, with varying degrees of dihedral symmetry according to its parity. Its rotors are used in the scrubber/piston agar.

Synthesis

gmc_nxtman found a 6-glider synthesis of the piston on July 26, 2017.[3]

x = 32, y = 12, rule = B3/S23 25bobo$25b2o$26bo$13b2o$9b2o2bobo$10b2obo$9bo2$2o$b2o14b2o11bo$o16bob o9b2o$17bo11bobo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBNAIL THUMBSIZE 2 AUTOSTART GPS 5 LOOP 50 PAUSE 2 ]]
The 6-glider synthesis
(click above to open LifeViewer)

Gallery

x = 14, y = 5, rule = B3/S23 2o10b2o$obo2bo2bo2bobo$2b4o2b4o$obo2bo2bo2bobo$2o10b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 2 GPS 2 AUTOSTART ]]
A long piston
(click above to open LifeViewer)
RLE: here Plaintext: here
Catagoluehere

References

  1. Robert Wainwright (September 1971). Lifeline, vol 3, page 3.
  2. Dean Hickerson's oscillator stamp collection. Retrieved on March 14, 2020.
  3. gmc_nxtman (July 26, 2017). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums

External links