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Report on the magnetic observations made at the University of Groningen during the total solar eclipse of May 17, 18, 1901
1901
Journal of Geophysical Research
At the request of Dr. van Rijckevorsel, I have made in the laboratory of the University of Groningen, during the night between •7-•8 May, observations of the variations of declinations and of the horizontal intensity. The laboratory is quite free from iron, and lies in a garden far from the railway, canals, and frequented streets. In Groningen there are no electric car lines nor electric plants, hence we are undisturbed by stray or "vagabundirende" currents. The variations of declination were
doi:10.1029/te006i003p00128
fatcat:2ued5bg3m5goxpl2jz5zfkulzq