Difference between revisions of "P42 glider shuttle"
Apple Bottom (talk  contribs) 
Apple Bottom (talk  contribs) (sv) 

Line 9:  Line 9:  
h = 56.1  h = 56.1  
v = 0.75  v = 0.75  
+  sv = 0.33  
discoverer = Noam Elkies  discoverer = Noam Elkies  
discoveryear = 1994  discoveryear = 1994 
Revision as of 16:07, 31 August 2017
p42 glider shuttle  
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View static image  
Pattern type  Oscillator  

Oscillator type  Shuttle  
Number of cells  143  
Bounding box  32×32  
Period  42  
Mod  Unknown  
Heat  56.1  
Volatility  0.75  
Strict volatility  0.33  
Discovered by  Noam Elkies  
Year of discovery  1994  
 
 

The p42 glider shuttle is a period42 shuttle oscillator discovered by Noam Elkies in 1994. It was the first nontrivial period42 oscillator to be discovered^{[1]} and is based on a period66 oscillator discovered by Robert Wainwright in September, 1984. It works by using two copies of eater 3 and four copies of unix to shuttle two gliders back and forth. By increasing the distance between the two reflectors, oscillators of periods 42 + 24n can be created. Dean Hickerson found that the distance between the reflectors could be decreased using a custom period6 oscillator to create a period18 glider shuttle. In April, 1992 Hickerson created another related oscillator by crossing two pairs of gliders using rephasers, which allowed the construction of oscillators of periods 246 + 24n.
Image gallery
See also
References
 ↑ Dean Hickerson's oscillator stamp collection. Retrieved on July 8, 2010.
External links
 Patterns
 Oscillators with 143 cells
 Patterns with 143 cells
 Patterns found by Noam Elkies
 Patterns found in 1994
 Oscillators
 Periodic objects with minimum population 143
 Shuttles
 Oscillators with period 42
 Oscillators with heat 56
 Oscillators with volatility 0.75
 Oscillators with strict volatility 0.33
 Patterns with bilateral diagonal symmetry
 Flipping oscillators