A treatise of artificial magnets; in which is shewn an easy and expeditious method of making them superior to the best natural ones; and also, a way of improving the natural ones, and of changing or converting their poles. Directions are likewise given for making the mariner's needles. In the best form, and for touching them most adventageously, &c / By J. Michell.

  • John Michell
Date:
1751
Catalogue details

Licence: Public Domain Mark

Credit: A treatise of artificial magnets; in which is shewn an easy and expeditious method of making them superior to the best natural ones; and also, a way of improving the natural ones, and of changing or converting their poles. Directions are likewise given for making the mariner's needles. In the best form, and for touching them most adventageously, &c / By J. Michell. Source: Wellcome Collection.

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