html | başlık An oblique anterior view of a model of the apparatus of the Pennsylvanian conodont Idiognathodus | authorlink Mark Purnell
Kaynak: Konodont

İlk üretilen roketler Alman yapımı Schweres Wurfgerät 40 (heavy throwing apparatus 40) ve Schweres Wurfgerät 41 adlarındaki roket fırlatma
Kaynak: Wurfrahmen 40

gives the history of Ohm's investigations, prior work, Ohm's false equation in the first paper, illustration of Ohm's experimental apparatus.
Kaynak: Ohm kanunu