horizon dip

  1. Laser

    Water Level Showing Mountain and Horizon Dip Due to Curvature

    Here I show a simple water level set up at an altitude of about 470 feet showing a distant mountain of 512 feet altitude dropping below the level line due to earth curvature. It also shows the horizon failing to rise to eye level, but instead dropping by more than half a sun/moon diameter, an...
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