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Re:Japan has 33k businesses at least a century old by adrianN on Friday February 14, 2020 @09:41AM (#22326914)
I'm reasonably sure that fission was discovered by Otto Hahn and Lise Meitner sometime in the late 1930s, few years after Fermi accidentally split the atom without realizing it.
Re:Japan has 33k businesses at least a century old by m-watson on Friday February 14, 2020 @10:19AM (#22327269)
Yea the theory was not really much before this (https://en.wikipedia.org/wiki/Nuclear_fission#History).

There really couldn't be much theory on this before 1900's anyway because of our understanding of the atom/nucleus.