popfray.pages.dev

Hantaro nagaoka contribution

    •

Hantaro Nagaoka

PHYSICIST

1865 - 1950

Hantaro Nagaoka

Hantaro Nagaoka (長岡 半太郎, Nagaoka Hantarō, August 19, 1865 – December 11, 1950) was a Japanese physicist and a pioneer of Japanese physics during the Meiji period. Read more on Wikipedia

Since 2007, the English Wikipedia page of Hantaro Nagaoka has received more than 201,414 page views. His biography is available in 19 different languages on Wikipedia (up from 18 in 2019). Hantaro Nagaoka is the 399th most popular physicist (down from 396th in 2019), the 622nd most popular biography from Japan (up from 631st in 2019) and the 14th most popular Japanese Physicist.

Memorability Metrics

  • 200k

    Page Views (PV)

  • 62.10

    Historical Popularity Index (HPI)

  • 19

    Languages Editions (L)

  • 5.08

    Effective Languages (L*)

  • 2.03

    Coefficient of Variation (CV)

Among PHYSICISTS

Among physicists, Hantaro Nagaoka ranks 399 out of 851. Before him are Friedrich Paschen, Léon Brillouin, Friedrich Ernst Dorn, Edward Witten, Takaaki Kajita, and Samuel Goudsmit. After him are Chester Carlson, Jacques-Arsène d

    •

Nagaoka, Hantaro

(b. Nagasaki, Japan, 15 August 1865; d. Tokyo, Japan, 11 December 1950)

physics.

Nagaoka graduated from the department of physics of the University of Tokyo in 1887 and entered the graduate school, where he began experimental research in magnetostriction under the British physicist C. G. Knott, who was in Japan between 1883 and 1891. After receiving a doctorate, Nagaoka studied at the universities of Berlin. Munich, and Vienna from 1893 to 1896. He wasespeciallv impressed by Boltzmann’s course on the kinetic theory of gases at the University of Munich. In 1900 Nagaoka was stimulated to study atomic structure to explain radioactivity by the lecture of the Curies at the first international congress of physics in Paris, where he had been invited to deliver a paper on magnetostriction.

From 1901 to 1925 Nagaoka, a leading professor of physics at the University of Tokyo, was primarily responsible for promoting the advancement of physics in Japan. In addition to studying magnetostriction, he did work in atomic structure, geophysics, mathe- matical physics, sp

    •

Hantaro Nagaoka

(1865–1950) Japanese physicist

Nagaoka was born in Nagasaki, Japan, and educated at Tokyo University. After graduating in 1887 he worked with a visiting British physicist, C. G. Knott, on magnetism. In 1893 he traveled to Europe, where he continued his education at the universities of Berlin, Munich, and Vienna. He also attended, in 1900, the First International Congress of Physicists in Paris, where he heard Marie Curie lecture on radioactivity, an event that aroused Nagaoka's interest in atomic physics. Nagaoka returned to Japan in 1901 and served as professor of physics at Tokyo University until 1925.

Physicists in 1900 had just begun to consider the structure of the atom. The recent discovery by J. J. Thomson of the negatively charged electron implied that a neutral atom must also contain an opposite positive charge. In 1903 Thomson had suggested that the atom was a sphere of uniform positive electrification, with electrons scattered through it like currants in a bun.

Nagaoka rejected Thomson's model on the ground that opposite charges are impenetrable. He

Copyright ©popfray.pages.dev 2025