magnetographs

The first was, that as we advanced to the west we were leaving the South Magnetic Pole, and I was anxious to have our magnetographs running as near the latter as possible.

The Home of the Blizzard Being the Story of the Australasian Antarctic Expedition, 1911-1914 Douglas Mawson 1920

Further, in the subject of magnetics, we have to thank especially Mr.E. Kidston of the Carnegie Institute for field tuition, and Mr. Baldwin of the Melbourne Observatory for demonstrations in the working of the E.chenhagen magnetographs.

The Home of the Blizzard Being the Story of the Australasian Antarctic Expedition, 1911-1914 Douglas Mawson 1920

For this two huts were to be erected; the first for "absolute" determinations, the second for housing the recording instruments -- the magnetographs.

The Home of the Blizzard Being the Story of the Australasian Antarctic Expedition, 1911-1914 Douglas Mawson 1920

In France, the destruction of property was much less serious, and attention was confined chiefly to the records of the shock provided by magnetographs and other instruments in distant observatories.

A Study of Recent Earthquakes Charles Davison 1899

Far beyond the limits of the disturbed area, however, the long slow waves sped over the surface, disturbing magnetographs and other delicate instruments.

A Study of Recent Earthquakes Charles Davison 1899

In 1884, the only observatories at which magnetographs were disturbed were those of Lisbon, Parc Saint-Maur (near Paris), Greenwich, and

A Study of Recent Earthquakes Charles Davison 1899

In 1887, the magnetographs registered the Riviera earthquake at these and several other observatories, the distribution of which is shown in Fig. 37.

A Study of Recent Earthquakes Charles Davison 1899

In the other horizontal pendulums and in the magnetographs, the method of registration is photographic.

A Study of Recent Earthquakes Charles Davison 1899

Bombay lies outside the disturbed area, 1208.3 miles from the equivalent centre; and, for the time of arrival in that city, we have to depend on the records of the barograph and the three magnetographs.

A Study of Recent Earthquakes Charles Davison 1899

Fernando (Cadiz) and by the magnetographs at Lisbon, Parc Saint-Maur,

A Study of Recent Earthquakes Charles Davison 1899