Buoyancy "downward" direction. The center of buoyancy of an object is the centroid of the displaced volume of fluid. Archimedes' principle is named after Archimedes of Syracuse, who first discovered this law in 212 B.C. For objects, floating and sunken, and in gases as well as liquids (i.e. a fluid), Archimedes' principle may be stated thus in terms of forces: — with the clarifications that for a sunken object the volume of displaced fluid is the volume of the object, and for a floating object on a liquid, the weight of the displaced liquid is the weight of the object. More
Legend of the Leather Bridge of Mümpelgard (Montbéliard), Count of Oltigen they came to an evil end in May 1410, according to Conrad Justinger. Legend of the Leather Bridge There is a legend of the Leather Bridge () in several regions of Germany and Switzerland. The word "lederne" could also have meant "ladder" or "lantern". According to legend, there was once a leather bridge crossing the Elmstein valley between the Palatine castle of Erfenstein, high above the left bank of the Speyerbach river, and a second castle, Spangenberg, on the opposite side of the valley. Two brothers, or at least two close friends, who visited