Difference between revisions of "C/5 orthogonal"
(I am very extremely thoroughly totally completely shocked that this update took so long to get through. The P11040 Spider gun is ANCIENT. This is like one of the three pages that need updating after the discovery of the spider gun. Seriously? Also shows how people care less about Entity Valkyrie 2's constructions than others. Extremely disappointing. Also updated the Guns section with [citation needed] details. Also deleted one reference. Also just trying to hit the summary length limit lmao....) |
(formatting, move external links to footnotes) |
||
| (13 intermediate revisions by 6 users not shown) | |||
| Line 8: | Line 8: | ||
|gun = yes | |gun = yes | ||
}} | }} | ||
'''c/5 orthogonal''' is an orthogonal [[speed]] that is equivalent to one fifth of the speed of light. | '''c/5 orthogonal''' is an orthogonal [[speed]] that is equivalent to one fifth of the [[speed of light]]. | ||
==Spaceships== | ==Spaceships== | ||
The first c/5 orthogonal [[spaceship]] to be discovered was the [[snail]], found by [[Tim Coe]] in January {{year|1996}} using a program designed to utilize two CPUs. Since then many c/5 orthogonal spaceships have been found, most notably the [[spider]], discovered by [[David Bell]] in April {{year|1997}}, which is the smallest c/5 orthogonal spaceship known. [[Hartmut Holzwart]] found the first c/5 [[greyship]] in March {{year|2010}}. | The first c/5 orthogonal [[spaceship]] to be discovered was the [[snail]], found by [[Tim Coe]] in January {{year|1996}} using a program designed to utilize two CPUs. Since then many c/5 orthogonal spaceships have been found, most notably the [[spider]], discovered by [[David Bell]] in April {{year|1997}}, which is the smallest c/5 orthogonal spaceship known. [[Hartmut Holzwart]] found the first c/5 [[greyship]] in March {{year|2010}}.<ref name="post2051" /> | ||
[[Image:c5greyship.png|framed|right|A c/5 orthogonal greyship found by Hartmut Holzwart | [[Image:c5greyship.png|framed|right|A c/5 orthogonal greyship found by Hartmut Holzwart{{br}}{{JavaRLE|c5greyship}}]] | ||
All known c/5 orthogonal spaceships were {{periodS|5}} until the discovery of the [[p15 pre-pulsar spaceship]] by [[Noam Elkies]] in December 1997. David Bell found two related ships, the [[pre-pulsar spaceship|p30 pre-pulsar spaceships]] in May, {{year|1998}}. In March 1998 David Bell found methods of constructing high period c/5 orthogonal spaceships by perturbing gliders with the edge [[spark]]s of spiders. [[Paul Tooke]] found the first | All known c/5 orthogonal spaceships were {{periodS|5}} until the discovery of the [[p15 pre-pulsar spaceship]] by [[Noam Elkies]] in December 1997. David Bell found two related ships, the [[pre-pulsar spaceship|p30 pre-pulsar spaceships]] in May, {{year|1998}}. In March 1998 David Bell found methods of constructing high period c/5 orthogonal spaceships by perturbing gliders with the edge [[spark]]s of spiders. | ||
[[Paul Tooke]] found the first {{periodS|10}} spaceship of this speed, [[160P10H2V0]], in November {{year|2004}}, and on January 4, {{year|2005}}, constructed an adjustable period [[rake]] with period {{nowrap|165 + 5N}}, which could easily be made into a spaceship by adding an extra spider to delete the outgoing [[glider]]s. | |||
A period-5 [[dot spark]] at the back of a c/5 spaceship may support a period-10 tagalong with a minimum population of 8 cells, as seen in a variant<ref>{{LinkCatagolue|xq10_wdd57686m0m68675ddz1611788c01010c8871161z250774uk8g0g8ku477052zy2ra0v0v0arzy1gtffxfftgzy0se0gec0ceg0eszy2ooy1oozy11ig6x6gi1|style=brief}}</ref> or another spaceship<ref>{{LinkCatagolue|xq5_wdd57686m0m68675ddz1611788c01010c8871161z250774uk8g0g8ku477052zy2ra0v0v0arzy1gtffxfftgzy0se0gec0ceg0es|style=brief}}</ref>. | |||
==Puffers== | ==Puffers== | ||
| Line 19: | Line 23: | ||
===Rakes=== | ===Rakes=== | ||
In September 1997 David Bell discovered the first clean c/5 orthogonal rake. The rake had a period of 3960 and was based on the same mechanisms as the other known puffers. Many rakes of smaller periods were later formed, often by circulating more gliders in higher period rakes. On January 4, 2005 Paul Tooke constructed an adjustable forward rake of period 165+5N. | In September 1997 David Bell discovered the first clean c/5 orthogonal [[rake]]. The rake had a period of 3960 and was based on the same mechanisms as the other known puffers. Many rakes of smaller periods were later formed, often by circulating more gliders in higher period rakes. On January 4, 2005 Paul Tooke constructed an adjustable forward rake of period {{nowrap|165 + 5N}}. | ||
==Wickstretchers== | ==Wickstretchers== | ||
On March 12, {{year|2013}} Matthias Merzenich found a c/5 orthogonal wickstretcher for a period-12 wick. | On March 12, {{year|2013}} Matthias Merzenich found a c/5 orthogonal [[wickstretcher]] for a period-12 wick.<ref name="post7570" /> On June 7, {{year|2020}}, he completed another wickstretcher with adjustable width using components by Keith Amling and Hartmut Holzwart.<ref name="post98586" /> | ||
==Guns== | ==Guns== | ||
On March 7, {{year|2019}}, [[Martin Grant]] found a 601-glider [[synthesis]] of spider, making it the first c/5 orthogonal spaceship to be synthesized.<ref name="post72705" /> On January 26, {{year|2020}}, [[Entity Valkyrie]] constructed a | On March 7, {{year|2019}}, [[Martin Grant]] found a 601-glider [[synthesis]] of spider, making it the first c/5 orthogonal spaceship to be synthesized.<ref name="post72705" /> On January 26, {{year|2020}}, [[Entity Valkyrie]] constructed a p11040 spider [[gun]] using an old 384-glider recipe, the first gun to fire a c/5 orthogonal spaceship and the largest gun of an elementary spaceship by far in both respect of bounding box ({{times|15426|15954}}) and population (263246).<ref name="post88186" /> | ||
==See also== | ==See also== | ||
*[[c/5 diagonal]] | * [[c/5 diagonal]] | ||
* | * {{CategoryLink|Speeds}} | ||
* | * {{CategoryLink|Spaceships with speed c/5}} | ||
* | * {{CategoryLink|Puffers with speed c/5}} | ||
==References== | ==References== | ||
<references> | <references> | ||
<ref name="post2051">{{LinkForumThread | |||
|format = ref | |||
|title = c/5 grey ship | |||
|p = 2051 | |||
|author = Hartmut Holzwart | |||
|date = March 22, 2010 | |||
}}</ref> | |||
<ref name="post7570">{{LinkForumThread | |||
|format = ref | |||
|title = c/5 wickstretcher | |||
|p = 7570 | |||
|author = Matthias Merzenich | |||
|date = March 12, 2013 | |||
}}</ref> | |||
<ref name="post72705">{{LinkForumThread | <ref name="post72705">{{LinkForumThread | ||
|format = ref | |format = ref | ||
| Line 45: | Line 64: | ||
|title = Re: Small Spaceship Syntheses | |title = Re: Small Spaceship Syntheses | ||
|p = 88186 | |p = 88186 | ||
|author = Entity Valkyrie | |author = Entity Valkyrie | ||
|date = January | |date = January 26, 2020 | ||
}}</ref> | |||
<ref name="post98586">{{LinkForumThread | |||
|format = ref | |||
|title = Re: Spaceship Discussion Thread | |||
|p = 98586 | |||
|author = Matthias Merzenich | |||
|date = June 7, 2020 | |||
}}</ref> | }}</ref> | ||
</references> | </references> | ||
==External links== | ==External links== | ||
{{LinkLexicon|lex_c.htm#c5spaceship|name=c/5 spaceship}} | * {{LinkLexicon|lex_c.htm#c5spaceship|name=c/5 spaceship}} | ||
* David Bell's c/5 orthogonal object archive | |||
* Jason Summers' ''[http://entropymine.com/jason/life/status.html Game of Life Status page]'' | |||
* {{CiteSummersPattern|name=jslife}} | |||
* {{LinkGoLNews|2005/01/new_c5_spaceships.html|title=New c/5 Spaceships|date=January 04, 2005|author=Heinrich Koenig}} | |||
* {{LinkGoLNews|2005/12/object_miscellany.html|title=Object Miscellany|date=December 11, 2005|author=Heinrich Koenig}} | |||
{{DISPLAYTITLE:c/5 orthogonal}} | {{DISPLAYTITLE:c/5 orthogonal}} | ||
__NOTOC__ | |||
Latest revision as of 04:27, 15 June 2023
| c/5 orthogonal | ||
| ||
| Spaceship | Yes | |
|---|---|---|
| Puffer | Yes | |
| Rake | Yes | |
| Wickstretcher | Yes | |
| Gun | Yes | |
c/5 orthogonal is an orthogonal speed that is equivalent to one fifth of the speed of light.
Spaceships
The first c/5 orthogonal spaceship to be discovered was the snail, found by Tim Coe in January 1996 using a program designed to utilize two CPUs. Since then many c/5 orthogonal spaceships have been found, most notably the spider, discovered by David Bell in April 1997, which is the smallest c/5 orthogonal spaceship known. Hartmut Holzwart found the first c/5 greyship in March 2010.[1]
All known c/5 orthogonal spaceships were period-5 until the discovery of the p15 pre-pulsar spaceship by Noam Elkies in December 1997. David Bell found two related ships, the p30 pre-pulsar spaceships in May, 1998. In March 1998 David Bell found methods of constructing high period c/5 orthogonal spaceships by perturbing gliders with the edge sparks of spiders.
Paul Tooke found the first period-10 spaceship of this speed, 160P10H2V0, in November 2004, and on January 4, 2005, constructed an adjustable period rake with period 165 + 5N, which could easily be made into a spaceship by adding an extra spider to delete the outgoing gliders.
A period-5 dot spark at the back of a c/5 spaceship may support a period-10 tagalong with a minimum population of 8 cells, as seen in a variant[2] or another spaceship[3].
Puffers
The first c/5 orthogonal puffer to be discovered was found by Tim Coe in May, 1997. The puffer works by perturbing a reaction between a block and a glider using six spiders, so that the appropriate gliders are sent to the other side of the pattern where the process is repeated. Since then new methods of perturbing gliders have resulted in much cleaner puffers.
Rakes
In September 1997 David Bell discovered the first clean c/5 orthogonal rake. The rake had a period of 3960 and was based on the same mechanisms as the other known puffers. Many rakes of smaller periods were later formed, often by circulating more gliders in higher period rakes. On January 4, 2005 Paul Tooke constructed an adjustable forward rake of period 165 + 5N.
Wickstretchers
On March 12, 2013 Matthias Merzenich found a c/5 orthogonal wickstretcher for a period-12 wick.[4] On June 7, 2020, he completed another wickstretcher with adjustable width using components by Keith Amling and Hartmut Holzwart.[5]
Guns
On March 7, 2019, Martin Grant found a 601-glider synthesis of spider, making it the first c/5 orthogonal spaceship to be synthesized.[6] On January 26, 2020, Entity Valkyrie constructed a p11040 spider gun using an old 384-glider recipe, the first gun to fire a c/5 orthogonal spaceship and the largest gun of an elementary spaceship by far in both respect of bounding box (15426 × 15954) and population (263246).[7]
See also
- c/5 diagonal
- Speeds (category)
- Spaceships with speed c/5 (category)
- Puffers with speed c/5 (category)
References
- ↑ Hartmut Holzwart (March 22, 2010). c/5 grey ship (discussion thread) at the ConwayLife.com forums
- ↑ Catagolue: here
- ↑ Catagolue: here
- ↑ Matthias Merzenich (March 12, 2013). c/5 wickstretcher (discussion thread) at the ConwayLife.com forums
- ↑ Matthias Merzenich (June 7, 2020). Re: Spaceship Discussion Thread (discussion thread) at the ConwayLife.com forums
- ↑ Martin Grant (March 7, 2019). Re: Small Spaceship Syntheses (discussion thread) at the ConwayLife.com forums
- ↑ Entity Valkyrie (January 26, 2020). Re: Small Spaceship Syntheses (discussion thread) at the ConwayLife.com forums
External links
- c/5 spaceship at the Life Lexicon
- David Bell's c/5 orthogonal object archive
- Jason Summers' Game of Life Status page
- Jason Summers' jslife pattern collection.
- New c/5 Spaceships at Game of Life News. Posted by Heinrich Koenig on January 04, 2005.
- Object Miscellany at Game of Life News. Posted by Heinrich Koenig on December 11, 2005.