C. Oersted, of the action of the galvanic current on a magnet.
(After Oersted.) FIG.
C. Oersted 6 that a magnet placed near a wire carrying an electric current tended to set itself at right angles to the wire, a phenomenon which indicated that the current was surrounded by a magnetic field.
C. Oersted (1777-1851) had shown that a magnetic needle is deflected by an electric current, he attempted, in the laboratory of the Royal Institution in the presence of Humphry Davy, to convert that deflection into a continuous rotation, and also to obtain the reciprocal effect of a current rotating round a magnet.
C. Oersted (21st July 1820) were still in 1821 apprehended in a somewhat confused manner even by the foremost men of science.
We may remark, however, that although the fact of the tangential force between an electric current and a magnetic pole was clearly stated by Oersted, and clearly apprehended by A.
C. Oersted heated its chloride with potassium amalgam, and failed in his object simply by reason of the mercury, so that when F.
Aluminium chloride, AlC1 3, was first prepared by Oersted, who heated a mixture of carbon and alumina in a current of chlorine, a method subsequently improved by Wohler, Bunsen, Deville and others.
In the annals of modern science Hans Christian Oersted (1777-1851) is a name universally honoured.
- Noticing an analogy between the polarity of the voltaic pile and that of the magnet, philosophers had long been anxious to discover a relation between the two, but twenty years elapsed after the invention of the pile before Hans Christian Oersted (1777-1851), professor of natural philosophy in the university of Copenhagen, made in 1819 the discovery which has immortalized his name.
In it Oersted describes the action he considers is taking place around 2 Faraday discussed the chemical theory of the pile and arguments in support of it in the 8th and 16th series of his Experimental Researches on Electricity.
It is clear, moreover, that Oersted clearly recognized the existence of what is now called the magnetic field round the conductor.
This discovery of Oersted, like that of Volta, stimulated philosophical investigation in a high degree.
To take a simple instance, if we consider an electric current as flowing in a conductor it is, as Oersted discovered, surrounded by closed lines of magnetic force.