Science quiz

[gricerboy]

maybe gricerboy does

While I do know how a steam engine converts the energy released from burning coal into locomotive power, I have to confess to not being a big kettlehead.

Get me on the mechanics of diesel hydraulic locomotion (which powered the mighty westerns, hymeks and warships that used to grace the western region from the 1950s to the 1970s) and I'm anyone's.

[lightng]

I've been thinking about this for a few months, because I was a bit suprised to learn what an unknown nugget of information it is.
My son in law who is of an engineering frame of mind, didnt know it. maybe gricerboy does

the question is this

how does a steam engine work?

Steam engines are bad as they use the soon to be banned substance dihydrogen monoxide in great quantities. You of all people should know this EO.