Searching those names led me to this interesting page, someone's compiled a history of estimations. https://folk.universitetetioslo.no/roberan/t/EarlyEstimates

Searching those names led me to this interesting page, someone's compiled a history of estimations. https://folk.universitetetioslo.no/roberan/t/EarlyEstimates1.shtml#Arrhenius https://folk.universitetetioslo.no/roberan/t/EarlyEstimates1... It includes an interesting page from Popular Mechanics as well, click the thumbnail.