Pont Royal [SEP] material used
for the first time in 1649, completely redone two years later, burnt in 1654, flooded in 1656, completely rebuilt in 1660, propped up in 1673 and finally carried away by a flood in February 1684. Madame de Sévigné reported that this last incident caused the loss of eight of the bridge's arches.
It was finally reconstructed between October 25, 1685, and June 13, 1689, this time with stone, receiving complete financing from the king Louis XIV; it was the king who gave it the name
to cathodically protect metals that are exposed to sea water. A zinc disc attached to a ship's iron rudder will slowly corrode while the rudder stays intact. Similarly, a zinc plug attached to a propeller or the metal protective guard for the keel of the ship provides temporary protection.
With a standard electrode potential (SEP) of −0.76 volts, zinc is used as an anode material for batteries. (More reactive lithium (SEP −3.04 V) is used for anodes in lithium batteries ). Powdered zinc is used in