Bibliographical history of electricity & magnetism, chronologically arranged
History
Bibliographical history of electricity & magnetism, chronologically arranged
Electricity -- History; Electricity -- History -- Bibliography; Magnetism -- History; Magnetism -- History -- Bibliography; Science, Medieval
=A.D. 1207.=--Neckam (Alexander of), 1157–1217, Abbot of St. Mary’s,
alludes in his “De Utensilibus” to a needle carried on board ship,
which, being placed upon a pivot and allowed to take its own position
of repose, “showed mariners their course when the Polar Star is
hidden.” In another work, “De Naturis Rerum” (lib. ii. cap. 89), he
writes: “Mariners at sea, when, through cloudy weather in the day,
which hides the sun, or through the darkness of the night, they lose
the knowledge of the quarter of the world to which they are sailing,
touch a needle with a magnet which will turn around until, on its own
motion ceasing, its point will be directed toward the North (Chappell,
“Nature,” No. 346, June 15, 1876; Thomas Wright, “Chronicles and
Memoirs ... Middle Ages,” 1863).
REFERENCES.--“La Grande Encyclopédie,” Vol. XXIV. p. 898; Hœfer,
“Nouv. Biogr. Générale,” Vol. XXXVII. p. 570.
=A.D. 1235–1315.=--Lully (Raymond) of Majorca (often confounded
with Ramond Lull, who is the author of several alchemical books and
of whose biography very little is known), was, by turns, a soldier,
a poet, a monk, a knight, a missionary and a martyr, and is referred
to by Humboldt as “the singularly ingenious and eccentric man, whose
doctrines excited the enthusiasm of Giordano Bruno when a boy, and who
was at once a philosophical systematizer and an analytical chemist, a
skilful mariner and a successful propagator of Christianity.”
During the year 1272 Lully published his “De Contemplatione,” which
was followed by “Fenix de las maravillas del orbe” in 1286, and by his
“Arte de Naveguar” in 1295. In these he states that the seamen of his
time employed instruments of measurement, sea charts and the magnetic
needle (_tenian_, _los mareantes_, _instrumento_, _carta_, _compas y
aguja_), and he describes the improvements made in the astrolabes
(designed for the determination of time and of geographical latitudes
by meridian altitudes and capable of being employed at sea) from the
period that the astrolabium of the Majorcan pilots was in use.
The application of the astrolabe to navigation, Mr. Irving says (“Hist.
of the Life ... of Columbus,” London, 1828, Vol. I. pp. 76–78), was
“one of those timely events which seem to have some thing providential
in them. It was immediately after this that Columbus proposed his
voyage of discovery to the crown of Portugal.”
Lully also confirms the fact that the Barcelonians employed atlases,
astrolabes[11] and compasses long before Don Jaime Ferrer penetrated to
the mouth of the Rio de Ouro, on the western coast of Africa, which was
about fifty years after the date of the last-named work.
Incidentally it may be added that Lully, posing as an alchemist, is
said to have in the presence of the English King, Edward I, converted
iron into gold, which latter was coined into rose-nobles (Bergman,
“Hist. of Chem.”; Louis Figuier, “L’Alchimie et les Alchimistes,”
Paris, 1860, p. 148).
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