Detail from a depiction of thought transference, the man behind dictating the movement of the other, from Magnetismus und Hypnotismus (1895) by Gustav Wilhelm Gessmann.
Featured on PDR in the essay Worlds Without End
At the end of the 19th century, inspired by radical advances in technology, physicists asserted the reality of invisible worlds — an idea through which they sought to address not only psychic phenomena such as telepathy, but also spiritual questions around the soul and immortality. Philip Ball explores this fascinating history, and how in this turn to the unseen in the face of mystery there exists a parallel to quantum physics today.