Space rake
| Space rake | |||||||
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| Pattern type | Rake Puffer | ||||||
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| Number of cells | 65 | ||||||
| Bounding box | 22 × 19 | ||||||
| Direction | Orthogonal | ||||||
| Period | 20 | ||||||
| Speed | c/2 | ||||||
| Discovered by | Unknown | ||||||
| Year of discovery | Unknown | ||||||
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Space rake is a period 20 forward glider rake constructed around 1971, probably by Bill Gosper; it was the first known rake. It consists of an ecologist with a lightweight spaceship added to turn its dying debris into gliders.
Note that if the back lightweight spaceship is flipped vertically and moved down by one cell, then this becomes a period 20 backward glider rake, as shown below.[1]
Image gallery
References
- ↑ Alan Hensel's lifep.zip pattern collection.
External links
- Space rake at the Life Lexicon