Kickback: Difference between revisions
Link to elbow ladder |
discovery ref |
||
| Line 1: | Line 1: | ||
{{EmbedViewer | {{EmbedViewer | ||
|pname = 180degreekickback | |pname = 180degreekickback | ||
|caption = The '''180-degree kickback'''<br> | |caption = The '''180-degree kickback'''<ref>{{CiteLifeline|vol=1|pages=page 4}}</ref><br> | ||
|viewerconfig = #C [[ THUMBNAIL THUMBSIZE 3 WIDTH 560 HEIGHT 240 PAUSE 2 AUTOSTART GPS 10 LOOP 50 ]] | |viewerconfig = #C [[ THUMBNAIL THUMBSIZE 3 WIDTH 560 HEIGHT 240 PAUSE 2 AUTOSTART GPS 10 LOOP 50 ]] | ||
|position = right | |position = right | ||
| Line 7: | Line 7: | ||
{{EmbedViewer | {{EmbedViewer | ||
|pname = 90degreekickback | |pname = 90degreekickback | ||
|caption = The '''90-degree kickback'''<br> | |caption = The '''90-degree kickback'''<ref>{{CiteLifeline|vol=11|pages=page 10}}</ref><br> | ||
|viewerconfig = #C [[ THUMBNAIL THUMBSIZE 3 WIDTH 560 HEIGHT 240 PAUSE 2 AUTOSTART GPS 10 LOOP 50 ]] | |viewerconfig = #C [[ THUMBNAIL THUMBSIZE 3 WIDTH 560 HEIGHT 240 PAUSE 2 AUTOSTART GPS 10 LOOP 50 ]] | ||
|position = right | |position = right | ||
| Line 15: | Line 15: | ||
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]] [[circuit]]ry or in self-supporting patterns like the [[Caterpillar]] or [[Centipede]], because it is generally less easy to arrange. | 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]] [[circuit]]ry or in self-supporting patterns like the [[Caterpillar]] or [[Centipede]], because it is generally less easy to arrange. | ||
==References== | |||
<references /> | |||
==External links== | ==External links== | ||
Revision as of 13:59, 19 November 2020
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.
References
- ↑ Robert Wainwright (March 1971). Lifeline, vol 1, page 4.
- ↑ Robert Wainwright (September 1973). Lifeline, vol 11, page 10.
External links
- Kickback at the Life Lexicon
- Kickback reaction at the Life Lexicon
- 180-degree kickback at the Life Lexicon