From laboratory to mountaintop: Creating an artificial aurora in the late nineteenth century

There existed a tradition of mimetic experimentation in the late nineteenth century, whereby morphologists sought to scale down sublime natural phenomena to tabletop devices in the laboratory. Experimenters constructed analogs of the aurora, attempting to replicate the colors and forms of the phenomenon with discharge tube experiments and electrical displays, which became popular spectacles at London's public galleries. This paper analyses a closely allied but different kind of imitation. Between 1872 and 1884, Professor Karl Selim Lemström (1838-1904) attempted to reproduce the aurora borealis in all of its complexity atop four mountains in northern Finland. Crucially, his "artificial aurora" was to materialize at the same scale as the original phenomenon and in its natural habitat in the polar atmosphere. With his experiment Lemström hoped to uncover the workings of the aurora and the electrical currents that he believed were always present within the atmosphere; his epistemological framework was one of learning by making. This paper sheds light on the broader problem of what it meant to authentically replicate a phenomenon that remained largely enigmatic, and, most importantly, how this replication could be verified. This prompts a discussion as to whether model experiments needed only to appear visually similar to the objects they purported to imitate, were required to preserve their form, or needed to be materially identical in order to the original to be identified as legitimate "reproductions" in the late nineteenth century.