Magnetic declination. 17th century illustration showing how a lodestone could be used to illustrate the concept of magnetic dip. The quadrant is moved around the lodestone,which has its own magnetic field,and the small needle attached to it traces the magnetic field lines. This illustration was first published in De magnete by William Gilbert,printed in London in 1600 | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Middle Temple Library |
Taille de l’image : | 3620 px × 4961 px |
Model Release : | Non requis |
Restrictions : | - |