What prevailing, yet ultimately incorrect, scientific concepts did the brothers initially try to align their smoke observations with?

Answer

"Inflammable air" or an "electrophoric fire"

The initial experimentation was not purely empirical observation divorced from contemporary thought; it was an effort to contextualize rising phenomena within the prevailing, albeit imperfect, scientific understanding of the late 18th century. Historical accounts suggest the brothers entertained theories that they were observing a specific gas, perhaps linking their findings to concepts circulating at the time, specifically mentioning terminology like 'inflammable air' or 'electrophoric fire' as possible explanations for the observed lift phenomenon before the true nature of heated air density was grasped.

What prevailing, yet ultimately incorrect, scientific concepts did the brothers initially try to align their smoke observations with?
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