Abstract
It has been recognized since the early days of homœopathy that the very high, ultramolecular
dilutions employed in homœopathy pose fundamental scientific problems. Hahnemann was
the first to recognize that the solution to these problems must be sought in physics,
not chemistry. The views of Hahnemann are summarized. The influence of contemporary
developments in physics on homœopathic theoreticians in the 19th and 20th centuries
is described. The latter part of the 20th century has seen the advent of experimental
studies using various forms of spectroscopy, particularly nuclear magnetic resonance.
Contemporary developments in the understanding of the physical basis of ultramolecular
dilutions, particularly information theory, are outlined.
Key Words
Physics - History - Ultramolecular dilutions - Experiment