Period-117 glider gun
| Period-117 glider gun | |||||||||
| View static image | |||||||||
| Pattern type | Gun | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Number of cells | 154 | ||||||||
| Bounding box | 42 × 29 | ||||||||
| Period | 117 | ||||||||
| Barrels | 2 | ||||||||
| Discovered by | David Raucci | ||||||||
| Year of discovery | 2021 | ||||||||
| |||||||||
| |||||||||
A period-117 glider gun is any glider gun with true period 117.
A true period 117 gun was discovered by David Raucci on July 6, 2021.[1] The gun uses a reaction similar to AK-94 where a honey farm hitting a fishhook produces a glider, but unlike AK-94, the period-117 gun uses two interacting copies instead of being a shuttle. The gun was initially found using 48P9s as sparkers, and then reduced with regard to bounding box by Tanner Jacobi using 66P13s,[2] and then by Matthias Merzenich using 50P9s the same day.[3] At the time of its discovery, it was the smallest known odd-period gun by bounding box; its bounding box is 42 × 29 = 1218 cells, beating the previous record of 55 × 34 = 1870 cells for the period-33 glider gun,[4] but it has since been superseded by the period-21 glider gun.
| The two earlier stabilizations (click above to open LifeViewer) RLE: here Plaintext: here |
References
- ↑ David Raucci (July 6, 2021). Re: Gun discussion thread (discussion thread) at the ConwayLife.com forums
- ↑ Tanner Jacobi (July 6, 2021). Re: Gun discussion thread (discussion thread) at the ConwayLife.com forums
- ↑ Matthias Merzenich (July 6, 2021). Re: Execution of Old Guns by Variable-Speed Firing Squad (discussion thread) at the ConwayLife.com forums
- ↑ Adam P. Goucher. "synthesis-costs/gun (text census)". Catagolue. Retrieved on August 2, 2021.
External links
- guntrue_117 at Adam P. Goucher's Catagolue (linear growth)