“The book Bir Döneme Işık Tutanlar” closely examines the lighting devices used in 19th-century Ottoman palaces and the transformation of these devices over time. The transition from gaslight to electricity, the various types of lighting elements, the visual and technical evolution of chandeliers, and the historical development of glass are all addressed in detail. Through the works of world-renowned glass and crystal manufacturers such as F.&C. Osler from England, Baccarat from France, and Murano from Italy, the aesthetic preferences of the Ottoman palace are also presented to the reader. Enriched with visual materials, the book offers a comprehensive introduction to the Lighting Devices Collection, which includes rare pieces from the National Palaces Collection. In terms of both visual content and scholarly depth, this publication stands out as one of the most comprehensive works in its field, and it is the result of a meticulously conducted academic research.