Filter (OIL )- A device which removes solids from a fluid. Flow Meter - A testing device which gauges either flow rate, total flow, or both. Flow Rate - The volume of fluid passing a point in a given time. Fluid Power - Energy transmitted and controlled through use of a pressurized fluid. Force - A push or pull acting upon a body.
Conflicts of national interest caused the World War II alliance between the United States and the Soviet Union to be replaced by a Cold War that lasted 45 years. Initially a dispute over the future of Europe, it grew to include confrontations around the world.
The cold war was a pivotal era in the twentieth century. The term cold war itself, popularized in a 1946 speech by prime minister Winston Churchill of Britain, describes the ideological struggle between democracy and Communism that began shortly after the end of World War II and lasted until 1991.