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2. Horseshoe magnet - Wikipedia

   en.wikipedia.org/wiki/Horseshoe_magnet

   The shape of the magnet was originally created as a replacement for the bar magnet as it makes the magnetic field stronger for a magnet of comparable strength. [5] A horseshoe magnet is stronger because both poles of the magnet are closer to each other and in the same plane which allows the magnetic lines of flux to flow along a more direct path between the poles and concentrates the magnetic ...

3. Arago's rotations - Wikipedia

   en.wikipedia.org/wiki/Arago's_rotations

   Arago remarked that it gave evidence of the presence of a force which only existed whilst there was relative motion between the magnet-needle and the mass of copper. He gave the phenomenon the name of magnetism of rotation. In 1825 he published a further experiment, in which, arguing from the principle of action and reaction, he produced a ...

4. Terrella - Wikipedia

   en.wikipedia.org/wiki/Terrella

   Kristian Birkeland and his magnetized terrella experiment, which led him to surmise that charged particles interacting with the Earth's magnetic field were the cause of the aurora. [ 1 ] Kristian Birkeland was a Norwegian physicist who, around 1895, tried to explain why the lights of the polar aurora appeared only in regions centered at the ...

5. Faraday's law of induction - Wikipedia

   en.wikipedia.org/wiki/Faraday's_law_of_induction

   Within two months, Faraday had found several other manifestations of electromagnetic induction. For example, he saw transient currents when he quickly slid a bar magnet in and out of a coil of wires, and he generated a steady current by rotating a copper disk near the bar magnet with a sliding electrical lead ("Faraday's disk").

6. Magnetism - Wikipedia

   en.wikipedia.org/wiki/Magnetism

   Magnetism is the class of physical attributes that occur through a magnetic field, which allows objects to attract or repel each other.Because both electric currents and magnetic moments of elementary particles give rise to a magnetic field, magnetism is one of two aspects of electromagnetism.

7. List of experiments in physics - Wikipedia

   en.wikipedia.org/wiki/List_of_experiments_in_physics

   Geiger–Marsden experiments: Hans Geiger, Ernest Marsden, Ernest Rutherford: Discovery Atomic nucleus: 1909 Oil drop experiment: Robert A. Millikan and Harvey Fletcher: Measurement Elementary charge of the electron: 1913 Compton generator: Arthur Compton: Demonstration Earth's rotation: 1914 Franck–Hertz experiment: James Franck and Gustav ...