Hopfield Bands

Hopfield may refer to: * A field used for cultivating

hops Hops are the flowers (also called seed cones or strobiles) of the hop plant ''Humulus lupulus'', a member of the Cannabaceae family of flowering plants. They are used primarily as a bittering, flavouring, and stability agent in beer, to whi ...

Hopfield net A Hopfield network (or Ising model of a neural network or Ising–Lenz–Little model) is a form of recurrent artificial neural network and a type of spin glass system popularised by John Hopfield in 1982 as described earlier by Little in 1974 ba ...

, a type of neural network *

John Joseph Hopfield John Joseph Hopfield (born July 15, 1933) is an American scientist most widely known for his invention of an associative neural network in 1982. It is now more commonly known as the Hopfield network. Biography Hopfield was born in 1933 to Pol ...

(born 1933), American biologist and physicist, inventor of the Hopfield net *

John J. Hopfield (spectroscopist) John Joseph Hopfield (July 8, 1891 – January 8, 1953) was a Polish-American physicist. Hopfield's published research included vacuum ultraviolet spectroscopy and solar ultraviolet spectroscopy. He was the discoverer of the "Hopfield bands" of ox ...

(1891–1953), American spectroscopist, with several eponymous spectral details: ** Hopfield bands, one of the important molecular oxygen

absorption band According to quantum mechanics, atoms and molecules can only hold certain defined quantities of energy, or exist in specific states. When such quanta of electromagnetic radiation are emitted or absorbed by an atom or molecule, energy of the ...

s ** Lyman–Birge–Hopfield bands (LBH bands), one of the important molecular nitrogen

s ** Hopfield continuum, a band in the

emission spectrum The emission spectrum of a chemical element or chemical compound is the spectrum of frequencies of electromagnetic radiation emitted due to an electron making a atomic electron transition, transition from a high energy state to a lower energy st ...

of helium See also: * ''

Adventure in the Hopfields ''Adventure in the Hopfields'' is a 1954 British children's film directed by John Guillermin and starring Mandy Miller. It was made for the Children's Film Foundation. Location filming took place in and around Goudhurst in Kent. Plot After acci ...

'', a 1954 black and white short (60 min) film, directed by John Guillermin and written by John Cresswell, thought to have been lost until 2002 when an American film fan found a copy in a rubbish skip outside a Chicago television studio {{disambig