This article traces the debates on photography-based teaching aids that appeared in public discourse around 1910: their pedagogical and didactic merits, and their implementation. Clearly, reflections on film prevail, since there was much concern about its harmful effects on children. The first part of the text focuses on the rhetoricaland, sometimes, anecdotal level of the … Read more

The article discusses similarities and differences concerning the position of the lecture in optical lantern and early film performances, in particular the temporal relations between the projected image and the oral comment. It looks at different examples and discusses some cases of combined slide and film projections. “The Voice of the Lecturer: Image-Word Relations in … Read more

The Utrecht University professor of Chemistry, Ernst Cohen (1869-1944) gave lectures illustrated with an optical lantern between at least 1899 and1938. His presentations addressed different audiences, from colleagues at chemical conventions to members of societal and professional associations and audiences at adult education centres. The range of topics he covered was equally broad: from lectures … Read more

When in 1921 the French micro-cinematographist Jean Comandon gave a series of illustrated lectures in the Netherlands, a newspaper reported that Comandon showed “‘living’ jitter-pictures” – that is: films – “instead of the usual lantern slides”. To consider this as a remarkable fact, the author of the article clearly must have expected slide projections as … Read more

While part of the research project ‘Projecting knowledge’ focuses on academic staff providing extramural, illustrated public lectures and courses, it will also deal with a few individuals who worked largely outside the academy, yet shared their scientific insights with the public at large. One of these case studies, published elsewhere, was devoted to dr. Paul … Read more

The series of Working papers is meant to explore areas of interest to the research project Projecting knowledge—the magic lantern as a tool for mediated science communication in the Netherlands, 1880-1940. Documents and literature are reported and discussed, and ideas are elaborated; as well pointers to further materials for research may be suggested that fall … Read more

The ghost-themed optical exhibition was very popular in the nineteenth century: from Robertson’s Phantasmagoria in post-Revolutionary Paris to Pepper’s Ghost at the London Polytechnic in the 1860s, audiences rushed to witness the ghostly demonstrations, also known as ghost lectures. Recently, scholars such as Bernard Lightman and Iwan Rhys Morus have argued for a re-evaluation of … Read more

The optical lantern was the central medium through which Art History professor Willem Vogelsang (1875-1954) taught his students ‘how to see’. As the first ordinarius in Art History in the Netherlands, Vogelsang focused on creating the right educational setting to turn his students into professional art historians. In his lectures the optical lantern and its … Read more

From the sensational ghost lecture of John Henry Pepper to Edison’s phonograph, and from illustrated astronomy lectures to the microscopic projection of the cholera bacillus, Dutchman L.K. Maju delivered popular scientific performances across the Netherlands, but also outside of its borders, an occupation spanning several decades. This article explores Maju’s transition from performing conjuring acts … Read more

da Rocha Gonçalves, Dulce. “On the Trail of 19th Century Science Performers: The Case of L. K. Maju.” Sage Public Understanding of Science Blog (blog), October 21, 2020. https://sagepus.blogspot.com/2020/10/on-trail-of-19th-century-science.html. Complementary to the article Science between the fairground and the academy: The case of Dutch science popularizer L. K. Maju (1823–1886), the Sage Blog Public Understanding … Read more