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1600 – William Gilbert publishes De Magnete, Magneticisque Corporibus, et de Magno Magnete Tellure ("On the Magnet and Magnetic bodies, and on that Great Magnet the Earth"), Europe's then current standard on electricity and magnetism. He experimented with and noted the different character of electrical and magnetic forces.
This further increases the magnetic lines of force in which the armature rotates, which still further increases the current in the electromagnet, thereby producing a corresponding increase in the field magnetism, and so on, until the maximum electromotive force which the machine is capable of developing is reached.
First in Europe to describe the magnetic compass and its use in navigation. 1269: Pierre de Maricourt: Published the first extant treatise on the properties of magnetism and compass needles. 1550: Gerolamo Cardano: Wrote about electricity in De Subtilitate distinguishing, perhaps for the first time, between electrical and magnetic forces. 1600 ...
This timeline lists significant discoveries in physics and the laws of nature, including experimental discoveries, theoretical proposals that were confirmed experimentally, and theories that have significantly influenced current thinking in modern physics. Such discoveries are often a multi-step, multi-person process.
Electromagnetic forces occur between any two charged particles. Electric forces cause an attraction between particles with opposite charges and repulsion between particles with the same charge, while magnetism is an interaction that occurs between charged particles in relative motion. These two forces are described in terms of electromagnetic ...
1895 – Hendrik Lorentz derives the Lorentz force for charged particles in electric and magnetic fields. [50] 1895 – Pierre Curie discovers empirically that the magnetic susceptibility of many materials is inversely proportional to temperature according to Curie's law. He also found that permanent magnetism was lost after a certain Curie ...
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.
1880s: John Hopkinson develops three-phase electrical supplies, mathematically proves how multiple AC dynamos can be connected in parallel, improves permanent magnets, and dynamo efficiency, by the addition of tungsten, and describes how temperature effects magnetism (Hopkinson effect). 1880: Pierre Curie and Jacques Curie: Piezoelectricity.