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Excerpt from On a Disturbance of the Earth's Magnetism, in Connexion With the Appearance of an Aurora Borealis: As Observed at Albany, April 19, 1831From the mean of several observations made with this needle in April, I consider its time of 300 vibrations for this month, and m an undisturbed state of terrestrial magnetic intensity, to be 979 seconds. The accidental errors

Title : On a Disturbance of the Earth's Magnetism, in Connexion with the Appearance of an Aurora Borealis: As Observed at Albany, April 19, 1831 (Classic Reprint)
Author : Joseph Henry
Language : en
Rating :
4.90 out of 5 stars
Type : PDF, ePub, Kindle
Uploaded : Apr 15, 2021
Book code : d164b

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