Scientific Phenomena Named After People - H

H

• Haar measure – Alfréd Haar
• Hadamard inequality – Jacques Solomon Hadamard
• Hadamard transform (a.k.a. Hadamard–Rademacher–Walsh transform) – Jacques Solomon Hadamard, Hans Adolph Rademacher, and Joseph Leonard Walsh
• Haldane effect – John Scott Haldane
• Haldane's principle – John Burdon Sanderson Haldane
• Hall effect – Edwin Hall
• Hamilton's rule – William Donald "Bill" Hamilton
• Hamming distance, weight – Richard Hamming
• Hammond postulate – George Simms Hammond
• Hanle effect – Wilhelm Hanle
• Hardy notation, space – Godfrey Harold Hardy
• Hardy–Littlewood circle method, first conjecture – Godfrey Harold Hardy and John E. Littlewood
• Hardy–Weinberg principle – Wilhelm Weinberg and Godfrey Harold Hardy
• Harrod–Johnson diagram – Roy F. Harrod and Harry G. Johnson
• Hartley oscillator – Ralph Hartley
• Hartman effect – Thomas E. Hartman
• Hartree energy – Douglas Hartree
• Hasse's algorithm – see Collatz conjecture, above
• Hasse diagram, principle – Helmut Hasse
• Hasse–Minkowski theorem – Helmut Hasse and Hermann Minkowski
• Hausdorff dimension – Felix Hausdorff
• Hawthorne effect – from the Hawthorne Works factory (where experiments were carried out 1924–1932)
• Hayflick limit – Leonard Hayflick
• Hawking radiation (a.k.a. Bekenstein–Hawking radiation) – Stephen Hawking (and Jacob Bekenstein)
• Heaviside layer – see Kennelly–Heaviside layer
• Hebbian learning – Donald Olding Hebb
• Heine–Borel theorem – Heinrich Eduard Heine and Félix Édouard Justin Émile Borel
• Heinlein's razor – see Hanlon's razor, above
• Heisenberg uncertainty principle – Werner Heisenberg
• Hellmann–Feynman theorem – Hans Hellmann and Richard Feynman
• Helmholtz free energy, Helmholtz resonance – Hermann von Helmholtz
• Hénon map – Michel Hénon
• Henrietta's law – see Leavitt's law, below
• Herbig Ae/Be star – George Herbig
• Herbig-Haro object – George Herbig and Guillermo Haro
• Herbrand base, interpretation, structure, universe, and Herbrand's theorem – Jacques Herbrand
• Herschel effect – Sir John Herschel
• Hertz effect – Heinrich Rudolf Hertz
• Hertzsprung-Russell diagram – Ejnar Hertzsprung and Henry Norris Russell
• Heusler alloy – Fritz Heusler
• Heyting algebra, arithmetic – Arend Heyting
• Hick's law, a.k.a. Hick–Hyman law – William Edmund Hick and Ray Hyman
• Higgs boson, field – Peter Higgs
• Higgs mechanism – see Anderson-Higgs mechanism, above
• Hilbert–Waring theorem (a.k.a. Waring's problem) – David Hilbert and Edward Waring
• Hill sphere (a.k.a. Roche sphere) – George William Hill (and Édouard Roche)
• Hills cloud – Jack G. Hills
• Hipparchic cycle – Hipparchus of Nicaea (a.k.a. Hipparchus of Rhodes)
• Hirayama family – Kiyotsugu Hirayama
• Hirsch–Meeks fusor – Robert L. Hirsch and Gene A. Meeks
• Hofstadter's butterfly, law – Douglas Hofstadter
• Holetschek effect – Johann Holetschek
• Hopfield network – John J. Hopfield
• Hořava–Lifshitz gravity – Petr Hořava and Evgeny Lifshitz
• Hořava–Witten domain wall – Petr Hořava and Edward Witten
• Hubbert peak – Marion King Hubbert
• Hubble constant, expansion – Edwin Hubble
• Huchra's Lens – John Huchra
• Humphreys line/series – Curtis J. Humphreys
• Hund's Rules – Friedrich Hund
• Hunsdiecker reaction – Heinz Hunsdiecker and Cläre Hunsdiecker
• Hunt–McIlroy algorithm – James W. Hunt and Douglas McIlroy
• Huygens–Fresnel principle – Christiaan Huygens and Augustin-Jean Fresnel