x = 7, y = 12, rule = B3/S23
5bo$4bo$4b3o7$b2o$obo$2bo!
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The 180-degree kickback [1] (click above to open LifeViewer ) RLE : here Plaintext : here
x = 7, y = 12, rule = B3/S23
5bo$4bo$4b3o7$bo$2o$obo!
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The 90-degree kickback [2] (click above to open LifeViewer ) RLE : here Plaintext : here
A kickback is any of the two 2-glider collisions resulting in a single glider travelling in the opposite direction to one of the original gliders. In a 90-degree kickback , the two gliders collide at right angle, while in a 180-degree kickback they are head-on. Both output gliders are one half-diagonal away from the lane of one of the inputs.
The 90-degree kickback is important in the original proof of the existence of a universal constructor (using an elbow ladder ) and in Bill Gosper 's total aperiodic , as well as a number of other constructions and glider syntheses . Thus the term kickback reaction may also refer to the 90-degree one specifically. The 180-degree kickback is rarely used in signal circuitry or in self-supporting patterns like the Caterpillar or Centipede , because it is generally less easy to arrange. However, it can be used to create high-period oscillators.
x = 242, y = 245
6boo8boo33bobbo$4bobbo8boo9bo18boo3b6o$4booboboo15bobo18bo9bo$5bobobbo
11bob3obo18bob7obo$bb3obbo14boo4boo14boobobobbobboboboo$bo23boo3bo14b
oobo7boboo$boboobobo13boobob4o12bo3bo9bo3bo$oobo4boo12bobbobo15b4ob3o
3b3ob4o$bobo5bo15bobbo20booboboo$boboobobbo19bo15boobb7obboo$oobo5bo6b
3o5boboboo9boo4boo4b3o4boo$3bo4boo4booboo4boo8bo6bo$3boobobo5b3o6bo7b
3o6bobo$23bo6bo10boo7bo$b4obbo15bo5bobboo11boo3b3o$bo3bobobbo12boobbo
bboobo10boo4b3ob3o$4booboboo10b3oboo4bo28boo$4bobbo23bo12b3ob3o4boo3b
oo$6boo9bobo7b3oboo15b3o3boo$12boo4boo6bobbo20bo$13bo4bo7booboboo6bo$
10b3o16bobbo5bo$10bo18boo7b3o3boob3o4booboo$45bob5obboobo$48boboo6bo$
24bobo18boo3b3ob3obo$25boo14boob3o6bobboboo$25bo15boboo7boboo4bo$43boo
6bobobob3o$39b5o3bo3boobbobo$39bo6bobo6boo$41bob4obbo$31bobo6boobo3bob
o$32boo12booboo$32bo12$45bobo$46boo$46bo12$59bobo$60boo$60bo12$73bobo$
74boo$74bo12$87bobo$88boo$88bo12$101bobo$102boo$102bo12$115bobo$116boo
$116bo$$115boo$114boo$116bo12$129boo$128boo$130bo12$143boo$142boo$144b
o12$157boo$156boo$158bo12$171boo$170boo$172bo3$224boo8boo$214bo8bobo8b
obbo$213bobo15booboboo$213bob3obo11boobobo$212boo4boo15bob3o$211bo3boo
5boo10bobo3bo$211b4oboboo12b3obboobo$214boboboo12b3o3boboo$213bobo15b
oo5bobo$185boo25bobobo6bo3boobb3o3boobo$184boo26boobb3o3bobobobboboo5b
oboo$186bo21bo7b3obbo7bobb3o3bo$208b3o7boobobbobobo3b3obboo$211bo5b3o
bboo3bo6bobo$208boobbo5boo15bob4o$208boboo3boo14boobobo3bo$210bo4boob
oo4bo6booboboo$210bobb3o3bo4bobo7bobbo$209boob3o9boo8boo$212bobbo12boo
$209booboboo12bo$209bobbo16b3o$211boo18bo$199boo16bo$198boo17bobo$200b
o16boo5$206b3obo13booboo$205booboobbo5boobo3bobo$207bobobo7bob4obbo$
217bo6bobo6boo$217b5o3bo3boobbobo$221bo7bobobob3o$219bobobbo7boo4bo$
213boo4boobbo5bo4boboo$212boo9bo7b4obo$214bo9bo3boo6bo$223b6o4bobo$
223bo8booboo$223bo$$220boo$219boo7boo$221bo6boo8boo$227bobo8boo$227boo
$227boo$219boo$218bobo$218bo$217boo4boo11boo$223bo4b5o4bo$227boo3boo$
221b5o9b5o$221bo5bobbobbo5bo$223boo11boo$222boobobobbobboboboo$225bob
7obo$225bo9bo$224boo3b6o$229bobbo!
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A p4284 oscillator based on the 180˚ kickback reaction, made by David Bell [3] (click above to open LifeViewer )
References
External links