Space rake: Difference between revisions
Jump to navigation
Jump to search
added Lifeline ref |
m formatting |
||
| Line 17: | Line 17: | ||
|rle = true | |rle = true | ||
|animated = true | |animated = true | ||
|viewerconfig = #C [[ ZOOM 14 AUTOSTART OFF ]] | |viewerconfig = #C [[ HEIGHT 380 WIDTH 600 THUMBSIZE 2 ZOOM 14 AUTOSTART OFF ]] | ||
}} | }} | ||
'''Space rake''' is a [[period]] 20 forward [[glider]] [[rake]] constructed no later than {{year|1971}},<ref>{{CiteLifeline|vol=3|pages=page 7}}</ref> 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 no later than {{year|1971}},<ref>{{CiteLifeline|vol=3|pages=page 7}}</ref> 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. | ||
| Line 23: | Line 23: | ||
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> | ||
{{EmbedViewer | |||
|pname = backwardspacerake | |||
|viewerconfig = #C [[ HEIGHT 380 WIDTH 600 THUMBSIZE 2 ZOOM 14 ]] | |||
|pname = backwardspacerake | |||
|position = center | |position = center | ||
|caption = The backward version of the space rake | |||
|caption = The backward version of the space rake | |style = width:300px; | ||
}} | }} | ||
==References== | ==References== | ||
| Line 39: | Line 35: | ||
==External links== | ==External links== | ||
{{LinkLexicon|lex_s.htm#spacerake}} | * {{LinkLexicon|lex_s.htm#spacerake}} | ||
Latest revision as of 04:46, 20 May 2023
| Space rake | |||||||||
| View animated image | |||||||||
| View static image | |||||||||
| 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 | ||||||||
| |||||||||
| |||||||||
Space rake is a period 20 forward glider rake constructed no later than 1971,[1] 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.[2]
| The backward version of the space rake (click above to open LifeViewer) RLE: here Plaintext: here |
References
- ↑ Robert Wainwright (September 1971). Lifeline, vol 3, page 7.
- ↑ Alan Hensel's lifep.zip pattern collection.
External links
- Space rake at the Life Lexicon