lake pontchartrain

  1. Mick West

    Soundly Proving the Curvature of the Earth at Lake Pontchartrain

    A classic experiment to demonstrate the curvature of a body of water is to place markers (like flags) a fixed distance above the water in a straight line, and then view them along that line in a telescope. If the water surface is flat then the markers will appear also in a straight line. If the...