Filter: Difference between revisions
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p10 filter is now described on the period-10 sparkers page |
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{{Glossary}} | {{Glossary}} | ||
A '''filter''' is an [[oscillator]] used to delete some but not all of the [[spaceship]]s in a [[stream]]. For example, a [[blocker]] can delete every second [[glider]] in a stream of [[period]] | A '''filter''' is an [[oscillator]] used to delete some but not all of the [[spaceship]]s in a [[stream]]. For example, a [[blocker]] can delete every second [[glider]] in a stream of [[period]] {{nowrap|8''n'' + 4}}, and can also do the same for [[LWSS]] streams. Other examples are the [[middleweight emulator]], [[T-nosed p4]] (either of which can be used to delete every second LWSS in a stream of period {{nowrap|4''n'' + 2}}) and the [[fountain]] (which does the same for MWSS streams). | ||
Filters can be used to make guns of high periods. For instance, the [[period-20 glider gun]] can be made p40 with a blocker, then p80 with [[Rich's p16]], and even p160 with [[68P32.1]]: | Filters can be used to make guns of high periods. For instance, the [[period-20 glider gun]] can be made p40 with a blocker, then p80 with [[Rich's p16]], and even p160 with [[68P32.1]]: | ||
{{EmbedViewer | {{EmbedViewer | ||
|pname = p160gun | |pname = p160gun | ||
|viewerconfig = #C [[ MAXGRIDSIZE 9 WIDTH 800 HEIGHT 700 THUMBSIZE 2 ZOOM 8 GPS 20 AUTOSTART KILLGLIDERS ]] | |||
|position = center | |position = center | ||
|caption = p160 glider gun | |caption = p160 glider gun | ||
|style = width:300px; | |||
}} | }} | ||
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== External links == | == External links == | ||
{{LinkLexicon|lex_f.htm#filter}} | * {{LinkLexicon|lex_f.htm#filter}} | ||
Revision as of 01:10, 18 May 2023
A filter is an oscillator used to delete some but not all of the spaceships in a stream. For example, a blocker can delete every second glider in a stream of period 8n + 4, and can also do the same for LWSS streams. Other examples are the middleweight emulator, T-nosed p4 (either of which can be used to delete every second LWSS in a stream of period 4n + 2) and the fountain (which does the same for MWSS streams).
Filters can be used to make guns of high periods. For instance, the period-20 glider gun can be made p40 with a blocker, then p80 with Rich's p16, and even p160 with 68P32.1:
| p160 glider gun (click above to open LifeViewer) RLE: here Plaintext: here |
List of filters
- Multiple of 4 but not 8, ×2: Blocker
- Multiple of 8 but not 16, ×2: Rich's p16
- Multiple of 16 but not 32, ×2: 68P32
- Multiple of 5 but not 10, ×2: p10 filter
- Multiple of 5 but not 15, ×3: Karel's p15
See also
External links
- Filter at the Life Lexicon