Difference between revisions of "Spark"

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Sparkers can give varieties of different sparks:<ref>{{cite web|url=http://conwaylife.com/ref/mniemiec/lifeterm.htm#spark|title=Sparkers|author=Mark Niemiec|date=February 19, 2015|accessdate=February 19, 2019}}</ref>
 
Sparkers can give varieties of different sparks:<ref>{{cite web|url=http://conwaylife.com/ref/mniemiec/lifeterm.htm#spark|title=Sparkers|author=Mark Niemiec|date=February 19, 2015|accessdate=February 19, 2019}}</ref>
  
* Edge bit: A detached dot spark caused by the birth of three cells in a line, e.g. [[middleweight volcano]].
+
* [[Dot]]: A single detached bit at an edge.
* Corner bit/diagonal bit: A detached dot spark caused by the birth of three cells that form a [[pre-block]]-like shape, e.g. [[blocker]].
+
** Edge bit: A detached dot spark caused by the birth of three cells in a line, e.g. [[middleweight volcano]].
* Horizontal domino: Two orthogonally connected detached bits at an edge, parallel to that edge, e.g. [[heavyweight volcano]].
+
** Corner bit/diagonal bit: A detached dot spark caused by the birth of three cells that form a [[pre-block]]-like shape, e.g. [[blocker]].
* Vertical domino: Two orthogonally connected detached bits at an edge but perpendicular to it. Oscillators that make these are called "pipsquirters", e.g. [[pipsquirter 1]].
+
** Fountain bit: A dot spark with no other bits in the row behind it, e.g. [[fountain]], or [[superfountain]] if there are no active sparks in the next two rows.
* Delayed domino: A domino spark where one bit appears first, and the other is added later, e.g. [[figure eight]].
+
* [[Domino]]: Two orthogonally connected bits at an edge, detached from the rest of an oscillator.
* Fountain bit: A single bit at an edge, with no other bits in the two rows behind it, e.g. [[fountain]].
+
** Horizontal domino: A domino spark parallel to the edge it appears on, e.g. [[heavyweight volcano]].
* Fountain domino: Two orthogonally connected bits at an edge, with no other bits in the two rows behind them, e.g. [[258P3]].
+
** Vertical domino: A domino spark perpendicular to the edge it appears on. Oscillators that make these are called "pipsquirters", e.g. [[pipsquirter 1]].
* Duoplet: Two diagonally connected detached bits at a corner, e.g. [[48P31]]. Historically sometimes also called a "diagonal domino", but it is not a [[polyomino]].
+
** Delayed domino: A domino spark where one bit appears first, and the other is added later, e.g. [[figure eight]].
* Irreflectable duoplet: A [[duoplet]] spark that is incapable of reflecting gliders, e.g. [[41P7.2]].
+
** Fountain domino: A domino spark with no other bits in the two rows behind it, e.g. [[258P3]].
* Reflectable duoplet: A duoplet spark that is capable of reflecting gliders, e.g. [[34P14 shuttle]].
+
* [[Duoplet]]: Two diagonally connected detached bits at a corner, e.g. [[48P31]]. Historically sometimes also called a "diagonal domino", but it is not a [[polyomino]].
* Banana spark: A three-bit spark capable of reflecting gliders, e.g. [[buckaroo]].
+
** Non-reflecting duoplet: A duoplet spark that is incapable of reflecting gliders, e.g. [[41P7.2]].
* Finger: Like a vertical domino, but the domino is attached orthogonally to something, e.g. [[T-nosed p4]].
+
** Reflecting duoplet: A duoplet spark that is capable of reflecting gliders, e.g. [[34P14 shuttle]].
* Thumb: Like a corner bit, but the dot is diagonally attached to something, e.g. [[Thumb 1]].
+
* [[Banana spark]]: A three-bit spark capable of reflecting gliders, e.g. [[buckaroo]].
 +
* [[Finger]]: Like a vertical domino, but the domino is attached orthogonally to something, e.g. [[T-nosed p4]].
 +
* [[Thumb]]: Like a corner bit, but the dot is diagonally attached to something, e.g. [[Thumb 1]].
  
 
==Strength of sparkers==
 
==Strength of sparkers==
 
A sparker oscillator can be considered "strong", "moderate" or "weak" depending on its relation to the rest of the oscillator. This does not necessarily correlate to how accessible the spark is, because examples like [[101]] which have very inaccessible sparks are still considered "strong" under this classification scheme.{{citation needed}}
 
A sparker oscillator can be considered "strong", "moderate" or "weak" depending on its relation to the rest of the oscillator. This does not necessarily correlate to how accessible the spark is, because examples like [[101]] which have very inaccessible sparks are still considered "strong" under this classification scheme.{{citation needed}}
  
* "Strong": the oscillator creates a spark that is a separate [[island]], and the oscillator is not affected if the spark is removed, e.g. [[Unix]], [[blocker]] and [[middleweight volcano]].
+
* "Strong": the oscillator creates a spark that is a separate [[island]], and the oscillator is not affected if the spark is removed, e.g. [[unix]], [[blocker]] and [[middleweight volcano]].
 
* "Moderate": the oscillator creates a spark that is a separate island, but the spark is still required for the oscillator to survive, e.g. [[mold]], [[fumarole]] and [[figure eight]].
 
* "Moderate": the oscillator creates a spark that is a separate island, but the spark is still required for the oscillator to survive, e.g. [[mold]], [[fumarole]] and [[figure eight]].
 
* "Weak": the oscillator includes one or more cells at its edge that remain connected to the oscillator, but can still be used to [[catalyst|catalyze]] other nearby patterns, e.g. [[caterer]], [[T-nosed p4]] and [[thumb 1]].
 
* "Weak": the oscillator includes one or more cells at its edge that remain connected to the oscillator, but can still be used to [[catalyst|catalyze]] other nearby patterns, e.g. [[caterer]], [[T-nosed p4]] and [[thumb 1]].
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==Belly spark==
 
==Belly spark==
The '''belly spark''' is the part of a [[middleweight spaceship]]'s or [[heavyweight spaceship]]'s spark that is not its [[tail spark]].<ref>{{CiteLexicon|file=lex_b.htm#bellyspark|title=Belly spark|accessdate=May 14, 2016}}</ref>
+
The '''belly spark''' is the part of a [[middleweight spaceship]]'s or [[heavyweight spaceship]]'s spark that is not its tail spark.<ref>{{CiteLexicon|file=lex_b.htm#bellyspark|title=Belly spark|accessdate=May 14, 2016}}</ref>
  
 
==See also==
 
==See also==

Latest revision as of 04:55, 25 December 2019

A spark is a pattern that dies. The term is typically used to describe a collection of cells periodically thrown off by an oscillator or spaceship, but other dying patterns, particulary those consisting of only one or two cells (such as those produced by certain glider collisions, for example), are also described as sparks. For examples of small sparks see unix and heavyweight spaceship. For examples of much larger sparks, see Schick engine and phi spark.

Sparker

A sparker is an oscillator or spaceship that produces sparks.[1]

Sparkers can give varieties of different sparks:[2]

  • Dot: A single detached bit at an edge.
    • Edge bit: A detached dot spark caused by the birth of three cells in a line, e.g. middleweight volcano.
    • Corner bit/diagonal bit: A detached dot spark caused by the birth of three cells that form a pre-block-like shape, e.g. blocker.
    • Fountain bit: A dot spark with no other bits in the row behind it, e.g. fountain, or superfountain if there are no active sparks in the next two rows.
  • Domino: Two orthogonally connected bits at an edge, detached from the rest of an oscillator.
    • Horizontal domino: A domino spark parallel to the edge it appears on, e.g. heavyweight volcano.
    • Vertical domino: A domino spark perpendicular to the edge it appears on. Oscillators that make these are called "pipsquirters", e.g. pipsquirter 1.
    • Delayed domino: A domino spark where one bit appears first, and the other is added later, e.g. figure eight.
    • Fountain domino: A domino spark with no other bits in the two rows behind it, e.g. 258P3.
  • Duoplet: Two diagonally connected detached bits at a corner, e.g. 48P31. Historically sometimes also called a "diagonal domino", but it is not a polyomino.
    • Non-reflecting duoplet: A duoplet spark that is incapable of reflecting gliders, e.g. 41P7.2.
    • Reflecting duoplet: A duoplet spark that is capable of reflecting gliders, e.g. 34P14 shuttle.
  • Banana spark: A three-bit spark capable of reflecting gliders, e.g. buckaroo.
  • Finger: Like a vertical domino, but the domino is attached orthogonally to something, e.g. T-nosed p4.
  • Thumb: Like a corner bit, but the dot is diagonally attached to something, e.g. Thumb 1.

Strength of sparkers

A sparker oscillator can be considered "strong", "moderate" or "weak" depending on its relation to the rest of the oscillator. This does not necessarily correlate to how accessible the spark is, because examples like 101 which have very inaccessible sparks are still considered "strong" under this classification scheme.[citation needed]

  • "Strong": the oscillator creates a spark that is a separate island, and the oscillator is not affected if the spark is removed, e.g. unix, blocker and middleweight volcano.
  • "Moderate": the oscillator creates a spark that is a separate island, but the spark is still required for the oscillator to survive, e.g. mold, fumarole and figure eight.
  • "Weak": the oscillator includes one or more cells at its edge that remain connected to the oscillator, but can still be used to catalyze other nearby patterns, e.g. caterer, T-nosed p4 and thumb 1.

Smoke

Smoke is debris that is fairly long-lived but eventually dies out completely. Thus, it is basically a large spark, but the term is used especially when talking about the output from a spaceship (as in a smoking ship).[3]

Tail spark

A tail spark is a spark that appears at the back of a spaceship.[4] For example, there is a one-bit tail spark at the back of a lightweight spaceship, middleweight spaceship, and heavyweight spaceship in their less dense phases.

Belly spark

The belly spark is the part of a middleweight spaceship's or heavyweight spaceship's spark that is not its tail spark.[5]

See also

References

  1. "Sparker". The Life Lexicon. Stephen Silver. Retrieved on May 24, 2009.
  2. Mark Niemiec (February 19, 2015). "Sparkers". Retrieved on February 19, 2019.
  3. "Smoke". The Life Lexicon. Stephen Silver. Retrieved on June 10, 2009.
  4. "Tail spark". The Life Lexicon. Stephen Silver. Retrieved on May 21, 2009.
  5. "Spark". The Life Lexicon. Stephen Silver. Retrieved on May 14, 2016.

External links