Difference between revisions of "Pre-pulsar shuttle 29"

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m (not seeing any RLE-namespace synth, so let's just go with the Catagolue synthesis)
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== External links ==
 
== External links ==
 
{{LinkCatagolue|xp29_y8ca23z252y24eexcczg8gy28ssy366xg0s4z01y76e6x6e6w11zzy8252y1252}}
 
{{LinkCatagolue|xp29_y8ca23z252y24eexcczg8gy28ssy366xg0s4z01y76e6x6e6w11zzy8252y1252}}
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{{LinkCatagolue|xp29_wgg0s4w255202552w4s0ggz320f811w4r4x4r4w118f023zzy4252y1252|patternname=56P29}}
 
{{LinkPentadecathlonObject|54P29.1}}
 
{{LinkPentadecathlonObject|54P29.1}}
  
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[[Category:Strong sparkers]]
 
[[Category:Strong sparkers]]
 
[[Category:Pre-pulsar shuttle oscillators]]
 
[[Category:Pre-pulsar shuttle oscillators]]
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__NOTOC__

Revision as of 15:52, 19 May 2019

Pre-pulsar shuttle 29
x = 18, y = 27, rule = B3/S23 11b2o$11bo$13bo$9b5o$9bo$12b4o$12bo2bo2$bo$obo6b3o4bo$bo7bobo3bobo$9b 3o3bobo$16bo2$16bo$9b3o3bobo$bo7bobo3bobo$obo6b3o4bo$bo2$12bo2bo$12b4o $9bo$9b5o$13bo$11bo$11b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]]
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Pattern type Oscillator
Oscillator type Shuttle
Number of cells 54
Bounding box 28×28
Period 29
Mod 29
Heat 41.5
Volatility 0.90
Strict volatility 0.90
Discovered by David Buckingham
Year of discovery 1980

Pre-pulsar shuttle 29 (or prime[citation needed]) is a period 29 shuttle oscillator discovered by David Buckingham on August 2, 1980,[1] making it the first oscillator of that period to be found. In terms of its 54 cells it is the smallest known period 29 oscillator.[2] The oscillator works by combining the 15-generation, two-tub pre-pulsar shuttle mechanism used in Eureka with a 14-generation pre-pulsar shuttle mechanism. Hassling pre-pulsars in this way was the only known way of constructing period 29 oscillators until the discovery of the P29 traffic-farm hassler, and some variations of this shuttle are shown below. In September 1994 Bill Gosper found that two copies of pre-pulsar shuttle 29 could be used to hassle a pentadecathlon. Gosper used it to construct the P58 toadsucker.

Image gallery

Generation 4 reveals two pre-pulsars (black) being hassled by a 15-generation mechanism (green) and a 14-generation mechanism (red).
A slightly larger version of this oscillator, 56P29, with just one pre-pulsar (black) and an alternate 14-generation stabilization (red)
RLE: here
A much larger version of this oscillator with four pre-pulsars
RLE: here

See also

References

  1. ↑ Dean Hickerson's oscillator stamp collection. Retrieved on June 16, 2009.
  2. ↑ "Class 2 Objects Catalog". Retrieved on June 10, 2009.

External links

  • 54P29.1 at Heinrich Koenig's Game of Life Object Catalogs
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