Because I apparently only use LJ these days to ask random questions of people smarter than I

[lord_codfish]

A conversation that started in an argument between me and a colleague about whether one would say "an R&D engineer" or "a R&D engineer" (eventually decided in my favor) somehow morphed into a discussion of how one would say "How to make an H-bomb" in Latin. No, I don't remember the trajectory.

With my mighty (ahem) knowledge of the Latin language, and an hour or so spent on Google (don't tell my boss!), I eventually came up with this: "De faciendo pyrobolum atomicum hydrogenii."

So, classicists of my acquaintance: how close did I get?