I'm in hvac and was leaening about this thw other day. Basically in my field has to with air velocity nd pressure pertaining to duct sizing. If you ever notice ducts how they run larger or expand in size, only to taper down in size again, what its doing slowing velocity as pressure can build and the other side that tapers back down gets that rise in air velocity...has more to do with keeping all areas in a certain temp range or regulataung airflow.....I was wondering if applied to a smaller scale. ..a piston... and the medium being oil, not air, would this principle even be applicable? Am I too high thinking this far into it haha!?
The taper part creates more pressure. Buildup -> Push/Directional Flow -> Tapered Down Part -> Force/Velocity multiplied on whatever the end pushed object is. Reminds me of hydraulic leverage principles (not that I'm expert in it).