Difference between revisions of "Jolson"
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pentadecathlonid = 42P15.1  pentadecathlonid = 42P15.1  
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−  '''Jolson''' (also known as '''Al Jolson''') is a [[period]] [[:Category:Oscillators with period 1515]] [[oscillator]] consisting of two [[blockblocks]] hassled by two [[pentadecathlonpentadecathlons]]. It was found by [[:Category:Patterns found by Robert WainwrightRobert Wainwright]] in November [[:Category:Patterns found in 19841984]] and named by [[:Category:Patterns found by Bill GosperBill Gosper]]. A period [[:Category:Oscillators with period 99]] version that uses two [[snacker]]s instead of pentadecathlons is also possible (see below), but  +  '''Jolson''' (also known as '''Al Jolson''') is a [[period]] [[:Category:Oscillators with period 1515]] [[oscillator]] consisting of two [[blockblocks]] hassled by two [[pentadecathlonpentadecathlons]]. It was found by [[:Category:Patterns found by Robert WainwrightRobert Wainwright]] in November [[:Category:Patterns found in 19841984]] and named by [[:Category:Patterns found by Bill GosperBill Gosper]]. A period [[:Category:Oscillators with period 99]] version that uses two [[snacker]]s instead of pentadecathlons is also possible (see below), but p14 (by hitting the sides of the pentadecathla with [[34P14 shuttle]]s) is not possible. It is not possible to create a period 45 version by using one snacker and one pentadecathlon, however, as the [[spark]]s must be both present at the same time when hassling. 
==Image gallery==  ==Image gallery== 
Revision as of 16:54, 10 May 2019
Jolson  
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Pattern type  Oscillator  

Number of cells  42  
Bounding box  18×22  
Period  15  
Mod  15  
Heat  47.9  
Volatility  0.98  
Strict volatility  0.98  
Discovered by  Robert Wainwright  
Year of discovery  1984  
 
 
 

Jolson (also known as Al Jolson) is a period 15 oscillator consisting of two blocks hassled by two pentadecathlons. It was found by Robert Wainwright in November 1984 and named by Bill Gosper. A period 9 version that uses two snackers instead of pentadecathlons is also possible (see below), but p14 (by hitting the sides of the pentadecathla with 34P14 shuttles) is not possible. It is not possible to create a period 45 version by using one snacker and one pentadecathlon, however, as the sparks must be both present at the same time when hassling.
Image gallery
External links
 Jolson at the Life Lexicon
Categories:
 Patterns
 Oscillators with 42 cells
 Patterns with 42 cells
 Patterns found by Robert Wainwright
 Patterns found in 1984
 Patterns that can be constructed with 13 gliders
 Oscillators
 Periodic objects with minimum population 42
 Oscillators with period 15
 Oscillators with mod 15
 Oscillators with heat 47
 Oscillators with volatility 0.98
 Oscillators with strict volatility 0.98