Olivier Darrigol authored a historical study of Georges Sagnac's work in optics. It connects the Sagnac effect and interferometry with Sagnac's wider investigations of light propagation, X-rays and radioactivity, examining how optical ideas shaped those investigations.[ref]
Georges Sagnac: A life for optics by Olivier Darrigol. Comptes Rendus Physique 15 (2014), pp. 789–840: author line and abstract, scope of Sagnac investigations and the role of optical analogies.
New to topics? Read the docs here!