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#: 221 - 230

# שם
שנה
מדינה
מדע
הישגים
221 Oskar_Klein_560.jpg
Oskar Klein

1894-1977
שוודיה
פיסיקה

introduced the physical notion of extra dimensions that helped develop the Kaluza-Klein theory
222 Arthur_Compton_574.jpg
Arthur Compton

1892-1962
ארצות הברית
פיסיקה

discovered the increase in wavelength of x rays when scattered by an electron
223 Walther_Bothe_576.jpg
Walther Bothe

1891-1957
גרמניה
פיסיקה

devised a coincidence counter for studying cosmic rays; demonstrated validity of energy-momentum conservation at the atomic scale
224 Frits_Zernike_589.jpg
Frits Zernike

1888-1966
הולנד
פיסיקה

invented the phase-contrast microscope, a type of microscope widely used for examining specimens such as biological cells and tissues
225 Henry_Moseley_601.jpg
Henry Moseley

1887-1915
בריטניה
פיסיקה

developed the modern form of the period table of elements based on their atomic numbers
226 Percy_Williams_Bridgman_616.jpg
Percy Williams Bridgman

1882-1961
ארצות הברית
פיסיקה

invented an apparatus to produce extremely high pressures; made many discoveries in high-pressure physics
227 Otto_Hahn_628.jpg
Otto Hahn

1879-1968
גרמניה
פיסיקה

discovered the fission of heavy nuclei
228 Max_von_Laue_629.jpg
Max von Laue

1879-1960
גרמניה
פיסיקה

discovered diffraction of x rays by crystals
229 Lise_Meitner_635.jpg
Lise Meitner

1878-1968
אוסטריה
פיסיקה

co-discovered the element protactinium and studied the effects of neutron bombardment on uranium; introduced term ``fission'' for splitting the atomic nucleus
230 Walter_Ritz_638.jpg
Walther Ritz

1878-1909
שוויץ
פיסיקה

Rydberg–Ritz combination principle; Ritz method

עדכון אחרון: 2018-01-19

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