# c/7 orthogonal

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c/7 orthogonal | ||

Spaceship | Yes | |
---|---|---|

Puffer | Yes | |

Rake | Yes | |

Wickstretcher | No | |

Gun | Yes |

**c/7 orthogonal** is an orthogonal speed that is equivalent to one seventh of the speed of light.

## Spaceships

On February 17, 2013 Josh Ball discovered the first c/7 orthogonal spaceship, the loafer.

Using caterloopillar technology, Michael Simkin constructed a c/7 orthogonal ship on April 16, 2016.^{[1]}

On February 4, 2017, Matthias Merzenich discovered 339P7H1V0, a large p7 width-19 bilaterally-symmetric c/7 orthogonal spaceship. These ships can be chained by nontrivial spark interactions to produce an infinite number of distinct c/7 orthogonal spaceships.^{[2]}

## Guns

Loafer can be synthesized from 8 gliders, allowing the construction of guns.^{[3]}

## See also

## References

- ↑ Michael Simkin (April 16, 2016). "Re: Caterloopillar WIP (all speeds < c/4)". Retrieved on April 16, 2016.
- ↑ Matthias Merzenich (July 26, 2019). "Re: Spaceship Discussion Thread". Retrieved on July 26, 2019.
- ↑ Shannon Omick (February 18, 2013). Re: c/7 orthogonal spaceships (discussion thread) at the ConwayLife.com forums

## External links