The evolution of Physics textbooks used in Ireland 1860-2022

This paper focuses on the evolution of Physics textbooks used in Ireland from 1860 to 2022, in addition to the Irish influence on early physics textbooks in the latter part of the 19th century. Both Physics and Physics education are continually evolving and so textbooks change in response to that and to the changing priorities of educators. Physics is both experimental and theoretical and the presentation of it has always been multimodal. Physics textbooks tend to include diagrams, demonstrations, experiments, the use of mathematics and derivations, historical references to people, and applications of Physics, among other features. Our research looks at these various characteristics to discern what has changed and what has not, over the course of time. Twenty-eight textbooks were examined in the course of this study. A Physics concept (refraction) and a Physics instrument (electroscope) were chosen for special attention, so that the findings would be firmly rooted in how Physics has been represented in textbooks rather than general textbook publishing trends. A specific analysis of four textbooks by the same two authors across three syllabi is also presented. Our findings show that a great deal has changed in the realm of Physics textbooks, and given that this is the case, it is remarkable how many things changed very little in 162 years.