Heat transfer is the exchange of thermal energy between physical systems. The rate of heat transfer is dependent on the temperatures of the systems and the properties of the intervening medium through which the heat is transferred. The three fundamental modes of heat transfer are conduction, convection and radiation.
Publisher. A+E Networks. In an event that is widely acknowledged to have sparked the outbreak of World War I, Archduke Franz Ferdinand, nephew of Emperor Franz Josef and heir to the Austro-Hungarian Empire, is shot to death along with his wife by a Serbian nationalist in Sarajevo, Bosnia, on this day in 1914.
Digital History ID 2919. The Associated Press ranked World War I as the 8th most important event of the 20th century. In fact, almost everything that subsequently happened occurred because of World War I: the Great Depression, World War II, the Holocaust, the Cold War, and the collapse of empires.n fact, almost everything that subsequently happened occurred because of World War I: the Great Depression, World War II, the Holocaust, the Cold War, and the collapse of empires.