Professor Dr. Andre Koch Torres Assis
University of Campinas, Brasil
Montag, 16. Oktober 2023
16 Uhr s.t.
2004/L1 und Zoom (hybride Veranstaltung)
über das Thema:
Wilhelm Weber (1804-1891) worked in collaboration with Gauss in the city of Göttingen. We present the origins of Weber’s electrodynamics (1846). Weber’s force depends not only on the distance between the interacting charges, but also on their relative velocity and relative acceleration. We discuss Ampère’s force between current elements and compare it with Grassmann-Biot-Savart’s law. Weber unified the laws of Coulomb, Ampère and Faraday many years before Maxwell. We also compare Lorentz’s force with Weber’s force. We present the deduction of the wave equation by Weber and Kirchhoff in 1857, which was also obtained before Maxwell. We present Weber’s planetary model of the atom. It was developed before Rutherford’s experiments and before Bohr’s model. According to Weber, when two positive charges are very close to one another, they behave as if they had a negative inertial mass, attracting one another instead of repelling each other. In Weber’s planetary model, the positive nucleus is stabilized (or held together) by purely electrodynamic forces. It is an unification of nuclear physics with electromagnetism. We discuss applications of Weber’s law to superconductivity. We also present modern experiments and recent theoretical developments related to Weber’s electrodynamics.
If you want to take part via Zoom please ask Prof. Frauenfelder for login details: Urs.Frauenfelder@math.uni-augsburg.de
|Hierzu ergeht herzliche Einladung.|
|Prof. Dr. Urs Frauenfelder|
Kaffee, Tee und Gebäck eine halbe Stunde vor Vortragsbeginn im Raum 2006 (L1).