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Joined 2 years ago
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Cake day: June 14th, 2023

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  • Regular trains don’t run underground. Lots of opencast mines exist .

    Basically all mines have an above ground terminal where whatever you mined is unloaded from your underground trains, lifts, haul trucks or whatever else onto storage piles, then loaded onto the actual long distance trains.

    If the mine entry is up a mountain, then the trip down from that point will be a net energy producer regardless of anything else.




  • Converting between Kelvin and Celsius is simple addition; converting between Rankine and Fahrenheit is simple addition. Converting between the two groups requires multiplication, and pre calculator, that’s notably harder.

    Also, all your kJ/kg/°C or BTU/lb/°F tables and factors are identical when you swap to referencing absolute zero. If you change to the other unit system, all that goes out the window.