Suchergebnisse
Suchergebnisse:
Vor 2 Tagen · The list of Alpha Phi Alpha ( ΑΦΑ) brothers (commonly referred to as Alphas) [1] includes initiated and honorary members. Alpha Phi Alpha is the first inter-collegiate Greek-letter organization established for Black college students. [2] Convened in December 1905 as a literary society with the first presiding officer being CC Poindexter, it ...
Vor 6 Tagen · Beryllium is a chemical element; it has symbol Be and atomic number 4. It is a steel-gray, strong, lightweight and brittle alkaline earth metal. It is a divalent element that occurs naturally only in combination with other elements to form minerals. Gemstones high in beryllium include beryl ( aquamarine, emerald, red beryl) and chrysoberyl.
Vor 4 Tagen · Shortly after the discovery of the neutron by James Chadwick in 1932, Heisenberg submitted the first of three papers on his neutron-proton model of the nucleus. After Adolf Hitler came to power in 1933, Heisenberg was attacked in the press as a "White Jew" (i.e. an Aryan who acts like a Jew).
Vor 5 Tagen · Manhattan Project. Leo Szilard (born February 11, 1898, Budapest, Hungary, Austria-Hungary—died May 30, 1964, La Jolla, California, U.S.) was a Hungarian-born American physicist who helped conduct the first sustained nuclear chain reaction and was instrumental in initiating the Manhattan Project for the development of the atomic bomb.
Vor 6 Tagen · 27. Februar: Die Zeitschrift Nature veröffentlicht einen Artikel von James Chadwick, der darin die Existenz des Neutrons beschreibt. 18. März: In Sydney wird die Hafenbrücke (Harbour Bridge), mit einer Spannweite von 495,6 m längste Bogenbrücke der Welt, eingeweiht. 20. Mai: Amelia Earhart überfliegt als erste Frau im Alleinflug den ...
Vor 2 Tagen · Im Jahr 1935 beginnt das NS-Regime, den Friedensvertrag von Versailles zu unterhöhlen. Reichsluftfahrtminister Hermann Göring gibt die Gründung der Luftwaffe bekannt; die bis dahin bestehende Reichswehr wird in die Wehrmacht umgewandelt. Zur „Wiedererlangung der Wehrhoheit “ wird die allgemeine Wehrpflicht wieder eingeführt; mit dem ...
Vor 4 Tagen · Thomas Edison (born February 11, 1847, Milan, Ohio, U.S.—died October 18, 1931, West Orange, New Jersey) was an American inventor who, singly or jointly, held a world-record 1,093 patents. In addition, he created the world’s first industrial research laboratory. The role of chemistry in Thomas Edison's inventions.
