Difference between revisions of "2c/7 orthogonal"
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===Rakes=== | ===Rakes=== | ||
On May 22, 2014, Ivan Fomichev constructed a [[Weekender distaff|period-16982 2c/7 rake]] by synthesising a lightweight spaceship [[seed]] with weekender conduits.<ref>{{Cite web|url=http://conwaylife.com/forums/viewtopic.php?p=12047#p12047|title=Re: Weekender Reactions: Building a 2c/7 Puffer|author=Ivan Fomichev|date=May 22, 2014|accessdate=May 26, 2014}}</ref> | On May 22, 2014, Ivan Fomichev constructed a [[Weekender distaff|period-16982 2c/7 rake]] by synthesising a lightweight spaceship [[seed]] with weekender conduits.<ref>{{Cite web|url=http://conwaylife.com/forums/viewtopic.php?p=12047#p12047|title=Re: Weekender Reactions: Building a 2c/7 Puffer|author=Ivan Fomichev|date=May 22, 2014|accessdate=May 26, 2014}}</ref> | ||
==Guns== | |||
On September 26, 2015, [[Chris Cain]] constructed a weekender gun<ref>{{Cite web|url=http://conwaylife.com/forums/viewtopic.php?p=23009#p23009|title=Re: Small Spaceship Syntheses|author=Chris Cain|date=September 26, 2015|accessdate=November 17, 2015}}</ref> based on a 79-glider synthesis. | |||
==See also== | ==See also== | ||
Revision as of 22:29, 17 November 2015
| 2c/7 orthogonal | ||
| ||
| Spaceship | Yes | |
|---|---|---|
| Puffer | Yes | |
| Rake | Yes | |
| Wickstretcher | No | |
| Gun | No | |
2c/7 orthogonal is a speed that is equivalent to two sevenths of the speed of light.
Spaceships
The first 2c/7 spaceship discovered was the weekender, which was found by David Eppstein on January 12, 2000 using his search program, gfind. On April 27, 2000, Stephen Silver discovered a tagalong that can be pulled by two weekenders.[1] Attaching these tagalongs to weekenders is currently the only known method of constructing other 2c/7 spaceships, besides building self-sustaining loops of weekender conduits (see Rakes).
Puffers
On December 26, 2013, Ivan Fomichev built a period-8974 2c/7 puffer by perturbing a lightweight spaceship with several weekenders. The next day, he built a smaller period-6622 puffer after Hartmut Holzwart pointed out a simpler design Jason Summers used in his 2c/5 puffer. [2]
Rakes
On May 22, 2014, Ivan Fomichev constructed a period-16982 2c/7 rake by synthesising a lightweight spaceship seed with weekender conduits.[3]
Guns
On September 26, 2015, Chris Cain constructed a weekender gun[4] based on a 79-glider synthesis.
See also
References
- ↑ Jason Summers' jslife pattern collection.
- ↑ Ivan Fomichev (December 26, 2013). "Re: Weekender Reactions: Building a 2c/7 Puffer". Retrieved on December 27, 2013.
- ↑ Ivan Fomichev (May 22, 2014). "Re: Weekender Reactions: Building a 2c/7 Puffer". Retrieved on May 26, 2014.
- ↑ Chris Cain (September 26, 2015). "Re: Small Spaceship Syntheses". Retrieved on November 17, 2015.