Space rake: Difference between revisions
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Apple Bottom (talk | contribs) Since it's not clear who found this, mention it was probably Bill in the text, but don't pollute the template/category tree. |
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'''Space rake''' is a [[period]] 20 forward [[glider]] [[rake]] constructed around [[:Category:Patterns found in 1971|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. | '''Space rake''' is a [[period]] 20 forward [[glider]] [[rake]] constructed around [[:Category:Patterns found in 1971|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.<ref>[[Alan Hensel]]'s [http://www.ibiblio.org/lifepatterns/ lifep.zip] pattern collection.</ref> | 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.<ref>[[Alan Hensel]]'s [http://www.ibiblio.org/lifepatterns/ lifep.zip] pattern collection.</ref> | ||
==Image gallery== | ==Image gallery== | ||
Revision as of 19:46, 19 May 2016
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| Pattern type | Rake Puffer | ||||||
|---|---|---|---|---|---|---|---|
| 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
 RLE: here |
References
- ↑ Alan Hensel's lifep.zip pattern collection.
External links
- Space rake at the Life Lexicon