1. Stefan Leahu

    Stefan Leahu New Member

    This might have been done before. I'm thinking railways, with their long straight stretches, might actually yield visible curvature. There should absolutely be, at least in the U.S. or Australia, long enought straight stretches to test this. I tried it at my local train station, but , sadly there's a hill right at the town exit ( it's a line's end, so there's only one outbound line
     
  2. Rory

    Rory Senior Member

    How would you tell the difference between curvature and incline?
     
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  3. Mick West

    Mick West Administrator Staff Member

    You couldn't. This was suggested before, I think somewhere on Metabunk (I could not find it though, buried in a thread). The bottom line is that there's way more variation in a "flat" section of railroad than you realize. Unless it's going over a dry lake bed or a causeway over water, then there's always a variety of slopes along the way. Revealed if you do an elevation profile in Google Earth.
     
  4. Mick West

    Mick West Administrator Staff Member

    Here:
    https://www.metabunk.org/posts/223218/

    (copied post below)

    Those might be more significant than you think, when you actually come to look along the track. Here's a random 14 miles section:
    Metabunk 2018-06-22 08-31-10.
    Metabunk 2018-06-22 08-28-55.
    (add a Path, then "Show Elevation Profile" on it).

    There's a 15-20 foot variation in place over the course of a mile.