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The passage appears at Book XXXVI of Naturalis Historia, covering "The Natural History of Stones", at chapter 25 entitled "The Magnet: Three Remedies". [4] Although Pliny's description is often cited, the story of Magnes the shepherd is postulated by physicist Gillian Turner to be much older, dating from approximately 900 BCE. [5]
The discovery of electromagnetic induction was made almost simultaneously, although independently, by Michael Faraday, who was first to make the discovery in 1831, and Joseph Henry in 1832. [77] [78] Henry's discovery of self-induction and his work on spiral conductors using a copper coil were made public in 1835, just before those of Faraday.
1st century AD – Pliny in his Natural History records the story of a shepherd Magnes who discovered the magnetic properties of some iron stones, "it is said, made this discovery, when, upon taking his herds to pasture, he found that the nails of his shoes and the iron ferrel of his staff adhered to the ground". [6]
One of the earliest known references to lodestone's magnetic properties was made by 6th century BC Greek philosopher Thales of Miletus, [12] whom the ancient Greeks credited with discovering lodestone's attraction to iron and other lodestones. [13] The name magnet may come from lodestones found in Magnesia, Anatolia. [14]
William Gilbert (/ ˈ ɡ ɪ l b ər t /; 24 May 1544? – 30 November 1603), [1] also known as Gilberd, [2] was an English physician, physicist and natural philosopher.He passionately rejected both the prevailing Aristotelian philosophy and the Scholastic method of university teaching.
In the U.K., at least three children have been hospitalized after swallowing magnets for the TikTok trend. Faye Elizabeth's 13-year-old daughter swallowed 15 magnetic beads and required major ...
One involves breaking a magnet in two and showing that both parts have a north and south pole. [7] He also dismisses the idea of perpetual motion. The third book has a general description of magnetic directions along with details on how to magnetize a needle. He also introduces his terella, or "little Earth". This is a magnetized sphere that he ...
Electric scooters, hair styling tools and tiny magnets found in desk toys are landing kids in the emergency room, according to a spate of new research. Pediatricians are sounding the alarm on ...
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