Herschel

1. A surname.
2. A male given name.

   Herschel Walker’s campaign for Senate removed a false claim – which inaccurately said the Republican candidate graduated from the University of Georgia – from a website for his Senate bid, the Atlanta Journal Constitution reported.

   2021 December 17, Rachel Janfaza, “Herschel Walker campaign deletes a false claim saying the Republican candidate for Senate graduated from college”, in CNN, archived from the original on 06 Dec 2022

3. obsoleteastronomyThe planet Uranus. In use until the mid-19th century as an alternative to Georgium Sidus after King George III.
4. astronomyOne of several impact craters in the Solar System, such as the one on Mimas.
5. A place name:
   1. A special service area in the Rural Municipality of Mountain View No. 318, Saskatchewan, Canada.
   2. A former settlement on Herschel Island, Yukon, Canada.
   3. A settlement in the Eastern Cape province, South Africa, named after Sir John Herschel.

plural Herschels

1. cellular automataA heptomino shaped like the lowercase letter h, critical as a methuselah.

   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)

   2 more examples

   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)

   Synonyms: D-heptomino, J-heptomino