Herschel en · NOUN
Pronunciation
- /ˈhɝʃl̩/ (General-American)
- /ˈhɜːʃl̩/ (Received-Pronunciation)
Etymology
(Uranus): after its discoverer, William Herschel.
Meanings
-
A heptomino shaped like the lowercase letter h, critical as a methuselah.
This uses Paul Callahan's catalysis of a glider into a Herschel and a glider, followed by David Buckingham's 77, 64, 64, 77, and 77 gen Herschel moves.
1999 October 7, Mirek Wojtowicz, “Conway's Life: Glider reflector?”, in comp.theory.cell-automata (Usenet):In Conway's Life, for example, a surprising number of small patterns serendipitously create R-pentominos and/or B-heptominos, which are "tamable" and happen to travel very well; this is what allows Herschel circuitry to be built.
2007 May 12, Dave Greene, “Wanted: 2D CA, "as complex" but "denser" than Life”, in comp.theory.cell-automata (Usenet):This Herschel could be sent through stages of Buckingham's components, producing an arbitrary excess of gliders along a variety of different paths.
1996 November 16, Paul Callahan, “Still-life glider reflector found”, in comp.theory.cell-automata (Usenet):
Forms
| Spelling | Features | Labels | Source |
|---|---|---|---|
| Herschels | Number=Plur | lexicographic |