The following video shows an experiment conducted at IPI to illustrate the physical effects that occur on library and archive materials due to changes in humidity conditions. In this example, a vellum bound book (Johann Hübner "Kurze Fragen aus der politischen Historia biß auf gegenwärtige Zeit" printed in 1701) was studied. The experiment started at an equilibrated condition of 55% relative humidity, then conditions were altered to 25%, back to 55% , and finally to 75%. The duration of the experiment was 12 hours and conducted at room temperature.
Comprender los efectos de la temperatura y la humedad sobre los libros encuadernados: