Difference between revisions of "P42 glider shuttle"
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−  {{Oscillatorname=p42 glider shuttlepname=p42glidershuttlep=42c=143bx=32by=32h=56.1discoverer=Noam Elkiesdiscoveryear=1994animated=truerle=truelife105=truelife106=trueplaintext=truev=0.75}}  +  {{Oscillatorname=p42 glider shuttlepname=p42glidershuttlep=42c=143bx=32by=32h=56.1discoverer=Noam Elkiesdiscoveryear=1994animated=truerle=truelife105=truelife106=trueplaintext=truev=0.75rulespecial=[[Conway's Game of LifeConway Life]]rulemin=B3/S23rulemax=B38/S23678}} 
The '''p42 glider shuttle''' is a [[period]][[:Category:oscillators with period 4242]] [[shuttle]] [[oscillator]] discovered by [[Noam Elkies]] in [[:Category:patterns found in 19941994]]. It was the first nontrivial period42 oscillator to be discovered<ref>{{CiteHickersonOscillatorsaccessdate=July 8, 2010}}</ref> and is based on a period66 oscillator discovered by [[Robert Wainwright]] in September, [[:category:patterns found in 19841984]]. It works by using two copies of [[eater 3]] and four copies of [[unix]] to shuttle two [[glider]]s 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, [[:Category:patterns found in 19921992]] Hickerson created another related oscillator by crossing two pairs of gliders using [[rephaser]]s, which allowed the construction of oscillators of periods 246 + 24n.  The '''p42 glider shuttle''' is a [[period]][[:Category:oscillators with period 4242]] [[shuttle]] [[oscillator]] discovered by [[Noam Elkies]] in [[:Category:patterns found in 19941994]]. It was the first nontrivial period42 oscillator to be discovered<ref>{{CiteHickersonOscillatorsaccessdate=July 8, 2010}}</ref> and is based on a period66 oscillator discovered by [[Robert Wainwright]] in September, [[:category:patterns found in 19841984]]. It works by using two copies of [[eater 3]] and four copies of [[unix]] to shuttle two [[glider]]s 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, [[:Category:patterns found in 19921992]] Hickerson created another related oscillator by crossing two pairs of gliders using [[rephaser]]s, which allowed the construction of oscillators of periods 246 + 24n.  
Revision as of 12:18, 16 May 2016
p42 glider shuttle  
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Pattern type  Oscillator  

Number of cells  143  
Bounding box  32×32  
Period  42  
Mod  Unknown  
Heat  56.1  
Volatility  0.75  
Strict volatility  Unknown  
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
 Oscillators with period 42
 Oscillators with heat 56
 Oscillators with volatility 0.75
 Patterns with bilateral diagonal symmetry
 Flipping oscillators
 Shuttles