![Examples of infinitely long permanent-magnet ring structures generating... | Download Scientific Diagram Examples of infinitely long permanent-magnet ring structures generating... | Download Scientific Diagram](https://www.researchgate.net/profile/J-M-D-Coey/publication/3110355/figure/fig5/AS:668652521136142@1536430592837/Examples-of-infinitely-long-permanent-magnet-ring-structures-generating-pure-multipole_Q320.jpg)
Examples of infinitely long permanent-magnet ring structures generating... | Download Scientific Diagram
![Magnetic field by René Descartes, from his Principia Philosophiae, 1644. This was one of the first drawings of the concept of a magnetic field. It shows the magnetic field of the Earth ( Magnetic field by René Descartes, from his Principia Philosophiae, 1644. This was one of the first drawings of the concept of a magnetic field. It shows the magnetic field of the Earth (](https://c8.alamy.com/comp/2BDX519/magnetic-field-by-ren-descartes-from-his-principia-philosophiae-1644-this-was-one-of-the-first-drawings-of-the-concept-of-a-magnetic-field-it-shows-the-magnetic-field-of-the-earth-d-attracting-several-round-lodestones-i-k-l-m-n-and-illustrates-his-theory-of-magnetism-descartes-proposed-that-magnetic-attraction-was-caused-by-the-circulation-of-tiny-helical-particles-threaded-parts-shown-which-circulated-through-parallel-threaded-pores-in-magnets-in-through-the-south-pole-a-out-through-the-north-pole-b-and-then-through-the-space-around-the-magnet-g-h-back-to-the-south-2BDX519.jpg)
Magnetic field by René Descartes, from his Principia Philosophiae, 1644. This was one of the first drawings of the concept of a magnetic field. It shows the magnetic field of the Earth (
![magnetic field round two bar magnets with like poles facing shown by iron filings Stock Photo - Alamy magnetic field round two bar magnets with like poles facing shown by iron filings Stock Photo - Alamy](https://c8.alamy.com/comp/ANA27A/magnetic-field-round-two-bar-magnets-with-like-poles-facing-shown-ANA27A.jpg)