On This Day: According to his own account, Otto von Guericke completes his book Experimenta... (1663)

On March 14, 1663: According to his own account, Otto von Guericke completes his book Experimenta Nova (ut vocantur) Magdeburgica de Vacuo Spatio, detailing his experiments on vacuum and his discovery of electrostatic repulsion.

This historical event can serve as a powerful sermon illustration about the pursuit of peace in a broken world. Consider using it when preaching about peace, discovery.