Turning toads
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| Turning toads | |||||||||
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| Pattern type | Wick | ||||||||
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| Period | 4 | ||||||||
| Speed | 0 | ||||||||
| Discovered by | Dean Hickerson | ||||||||
| Year of discovery | 1989 | ||||||||
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Turning toads is a period-4 wick/oscillator that contains toads that repeatedly flip orientation. It is a p4 toad flipper. It was found by Dean Hickerson in October 1989.[1]
Smaller-bounding-box stabilisation
The configuration at the ends stabilising the p4-hassled flutter rotor may be replaced with a smaller and more volatile one, which protrudes upwards by a single cell (at high displacement), but only a single cell downwards the toads themselves instead of four.
| See also monomer: Catagolue: here (click above to open LifeViewer) Catagolue: here |
Related p4 toad sucker ('shifting toads')
As well as a turning toad, one end of a flutter may mutually support a toad in a period-4 displacing reaction (acting as a toad sucker). This toad may be used for its domino spark, only occupying four rows beneath it (useful in minimising some patterns' bounding boxes).
| Trans- stabilisation with mod 2 (rotational glide-symmetry) (click above to open LifeViewer) Catagolue: here |
| Cis- stabilisation, as is used in David Buckingham's 1996 improvement of his p44 glider gun (click above to open LifeViewer) Catagolue: here |
| Overlay of turning toad (red) and shifting toad (green) (click above to open LifeViewer) |
| In this component of the current smallest period-132 glider gun (archived copy), a turning toad is used as a joint between two shifting toads despite only one being used, allowing neither of the ends to protrude downwards. Note that both shifting toads are necessary, even if one is used only once (click above to open LifeViewer) Catagolue: here |
References
- ↑ Dean Hickerson's oscillator stamp collection. Retrieved on March 14, 2020.
External links
- Turning toads at the Life Lexicon
- Turning toad (monomer)
- Turning toads