Interchange: Difference between revisions
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|viewerconfig = #C [[ GPS 5 THUMBSIZE 2 ]] | |viewerconfig = #C [[ GPS 5 THUMBSIZE 2 ]] | ||
|caption = p9, found by [[David Raucci]] on January 24, {{year|2022}} | |caption = p9, found by [[David Raucci]] on January 24, {{year|2022}} | ||
|apgcode = xp9_y18kkjap5q88q5pajkk8zy410125cc52101zy4gjlk4w4kljgzy3haaqirrrriqaahz0c4o0eh2hy6h2he0o4cz32alkmmgo0155225510ogmmkla23zy166x681hh4y166zya7 | |||
}} | }} | ||
|{{EmbedViewer | |{{EmbedViewer | ||
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|viewerconfig = #C [[ GPS 8 THUMBSIZE 2 ]] | |viewerconfig = #C [[ GPS 8 THUMBSIZE 2 ]] | ||
|caption = p16 pre-interchange hassler, found by [[Carson Cheng]] on October 8, {{year|2022}} | |caption = p16 pre-interchange hassler, found by [[Carson Cheng]] on October 8, {{year|2022}} | ||
|apgcode = xp16_g88bb88gy2g88bb88gz11wt11y411tw11zbdwvw846ee648wvwdbzo8wb88hy2h88bw8oz011dd11y411dd11 | |||
}} | }} | ||
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|viewerconfig = #C [[ GPS 9 THUMBSIZE 2 ]] | |viewerconfig = #C [[ GPS 9 THUMBSIZE 2 ]] | ||
|caption = p18, found by [[David Raucci]] on October 3, {{year|2021}} and reduced by [[Matthias Merzenich]] the next day | |caption = p18, found by [[David Raucci]] on October 3, {{year|2021}} and reduced by [[Matthias Merzenich]] the next day | ||
|apgcode = xp18_ggc2sgyajjgz694r2a3sy333w7611gzci4r8ao7x44244y0okno3ckz116871y111211xv0i0u1i1zy0ccb7w66y316aq6hcbzy166yb121 | |||
}} | }} | ||
|{{EmbedViewer | |{{EmbedViewer | ||
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|viewerconfig = #C [[ GPS 19 THUMBSIZE 2 ]] | |viewerconfig = #C [[ GPS 19 THUMBSIZE 2 ]] | ||
|caption = p38, found by [[cvojan]] on April 20, {{year|2022}} based on a partial by [[David Raucci]] | |caption = p38, found by [[cvojan]] on April 20, {{year|2022}} based on a partial by [[David Raucci]] | ||
|apgcode = xp38_sgh11yp11hgszw33y031e8yb8e13y033zw3356y3gy3gy76533zy82251g06511zybijzwookcy63y174y5ckoozwooy0oge2y3gg071gy6ooz71hggy86221w22510g8oxggh17zyn23 | |||
}} | }} | ||
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|viewerconfig = #C [[ GPS 21 THUMBSIZE 2 ]] | |viewerconfig = #C [[ GPS 21 THUMBSIZE 2 ]] | ||
|caption = p42 that alternates between an interchange and a [[pentadecathlon]], found by [[Period1GliderGun]] on May 2, {{year|2024}} | |caption = p42 that alternates between an interchange and a [[pentadecathlon]], found by [[Period1GliderGun]] on May 2, {{year|2024}} | ||
|apgcode = xp42_x66xg0e172w66y3gq2e666zxoox20s0ogwooy137830sheczy711y6666745zy977w77zgg8t17j33y1oow8s4oy1ooz134h0u876y8h0az333322y433w2743y133 | |||
}} | }} | ||
|{{EmbedViewer | |{{EmbedViewer | ||
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|viewerconfig = #C [[ GPS 23 THUMBSIZE 2 ]] | |viewerconfig = #C [[ GPS 23 THUMBSIZE 2 ]] | ||
|caption = p46, found by Carson Cheng on September 22, {{year|2023}} | |caption = p46, found by Carson Cheng on September 22, {{year|2023}} | ||
|apgcode = xp46_8ox7exe7z0123x66y0cczy4gzy299g99zzw33y066xc4ozy1e7x7ex11 | |||
}} | }} | ||
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|viewerconfig = #C [[ GPS 42 THUMBSIZE 2 ]] | |viewerconfig = #C [[ GPS 42 THUMBSIZE 2 ]] | ||
|caption = p84, found by David Raucci on July 22, {{year|2021}} | |caption = p84, found by David Raucci on July 22, {{year|2021}} | ||
|apgcode = xp84_y465wogocb6x66y066x6bcogow56zy4o8w626ckoxooy0ooxokc626w8ozy59oy11yc1y1o9zy6123y5ocwcoy5321zzx3nb0osss8y66cwc6y68ssso0bn3z8e125521yu125521e8zy465wogocb6x66y066x6bcogow56zy4o8w626ckoxooy0ooxokc626w8ozy51y21yc1y21 | |||
}} | }} | ||
|} | |} | ||
Revision as of 01:04, 14 June 2024
| Interchange | |||||||||
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| Pattern type | Constellation Oscillator | ||||||||
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| Number of cells | 18 | ||||||||
| Bounding box | 16 × 9 | ||||||||
| Period | 2 (mod: 2) | ||||||||
| Heat | 24 | ||||||||
| Volatility | 0.80 | 0.80 | ||||||||
| Kinetic symmetry | Unspecified | ||||||||
| Discovered by | Hugh Thompson | ||||||||
| Year of discovery | 1971 | ||||||||
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Interchange is a common constellation of six blinkers.
There are two different interchanges; the more common one is displayed to the right. The less common variant has five cells between the left and right halves instead of four.
Two gliders reflected along an axis of symmetry with an even number of rows between them form an interchange. With an odd number of rows, it becomes a bi-block instead.
| Unlike most common sequences which require only five or six cells the minimum number of cells needed to form an interchange is seven (click above to open LifeViewer) RLE: here Plaintext: here |
Hasslers
Interchanges can be hassled, although not that many are known because the interchange doesn't expand as much as several more common sequences like the R-pentomino or Pi-heptomino.
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See also
- Blinker
- Traffic light
- Cap, one of its predecessors
External links
- Interchange at the Life Lexicon
- Small interchange at Adam P. Goucher's Catagolue (pseudo-object)
- Large interchange at Adam P. Goucher's Catagolue (pseudo-object)
Categories:
- Patterns
- Oscillators with 18 cells
- Patterns with 18 cells
- Patterns found by Hugh Thompson
- Patterns found in 1971
- Patterns that can be constructed with 2 gliders
- Constellations
- Constellations with 18 cells
- Oscillators with period 2
- Oscillators with mod 2
- Oscillators with heat 24
- Oscillators with volatility 0.80
- Oscillators with strict volatility 0.80
- Patterns with rectangular orthogonal symmetry