Humphry Davy, Poet and PhilosopherThorpe, T. E. (Thomas Edward)
Science
Humphry Davy, Poet and Philosopher
Thorpe, T. E. (Thomas Edward)
Davy, Humphry, Sir, 1778-1829
of Wordsworth? I remember William Laidlaw whispering to me, one
night, when their ‘wrapt talk’ had kept the circle round the fire
until long after the usual bed-time of Abbotsford--‘Gude preserve
us! This is a very superior occasion! Eh, sirs!’ he added,
cocking his eye like a bird, ‘I wonder if Shakspeare and Bacon
ever met to screw ilk other up?’”
In spite of the many calls upon his time and energies entailed by
his duties as President, he still found opportunity to work in his
laboratory, and one outcome of his labours was a paper “On the magnetic
phenomena produced by electricity,” published in the _Philosophical
Transactions_ for 1821--the sequel of a letter addressed to Wollaston
and also printed in the Transactions. This memoir was followed a few
months later by a communication “On the Electrical phenomena exhibited
_in vacuo_.”
These papers, together with one on a New Phenomenon of
Electro-Magnetism, published in 1823, are interesting in relation to
the development of Oersted’s great discovery, and in connection with
the subsequent work of Faraday.
With that power of generalisation which is one of the distinguishing
marks of his genius, he shows the possible connection of the facts he
had observed with the phenomena of terrestrial magnetism. He concludes
his first paper by asking
“whether the magnetism of the earth may not be owing to its
electricity, and the variation of the needle to the alterations
in the electrical currents of the earth, in consequence of its
motions, internal changes, or its relations to solar heat; and
whether the luminous effects of the auroras at the poles are not
shown, by these new facts, to depend on electricity. This is
evident, that if strong electrical currents be supposed to follow
the apparent course of the sun, the magnetism of the earth ought
to be such as it is found to be.”
Public-domain text, read in full here on John Shaqi.
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