Submitted by goatharper t3_zyp4vw in space
dittybopper_05H t1_j2a5kub wrote
Reply to comment by how_tall_is_imhotep in Just back from witnessing a test firing of a rocket motor that my neighbor built by goatharper
It's how it's used conversationally.
We don't talk about electric engines, for example.
We do sometimes talk about the motor in a car, though, so it's not perfect, just a general rule.
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