1. Stefan Leahu

    Proving curvature: a distant island, viewed from different heights

    So, Ile d' Yeu is a small island off the coast of western France in the Vendee region. Being pretty much flat and at around 20 km from shore minimum, this makes it a good target for observing the effects of curvature. Went to Plage de Sion in St Hilaire de Riez, where the closest point on the...