The operation and uses of the radar in the United States. An enemy plane comes in the range of radar detection. The receiving antenna detects entry of a plane. A search light pinpoints at the plane. Guns fire. The plane on fire. It drops down. Radar used at ports. A plane in flight. It looses altitude. A ground control man guides with accurate information and helps the pilot to land safely. Gauges show altitude and other readings. (World War II period).
Dropping of a Mark 25 Aerial mine in Japan. 21st Bomber Command base at an island in the United States. The Mark 25 mine at the base. Hydro static devices, an extender and a clock delay mechanism. Mines loaded onto B-29 planes. They are dumped on trailers and a parachute is attached to after end. Explosive charge, the extender and the clock mechanism are put in a safety lock. A water soluble washer is attached. An officer specify an enemy area on a map. Group commanders are briefed. A B-29 plane takes off. The bombing door opens on the target. The mine is dropped. The parachute opens. The mine drops in water. (World War II period).
Men deliver refrigerator to rural farm home in the United States. The men carry the refrigerator from the back of an of an open truck. Hens in the foreground. Farmer and wife watch from porch. A big bell hung in the foreground of a house.
A cooking range being used in a kitchen in the United States. Biscuit batter is beaten with an electric beater. An old woman cooks food using a stove top and oven of vintage 1930s or 1940s. She opens the oven and stirs soup being cooked on the stove. She takes biscuits from the oven.
An electric driven water pump is connected and run to pump water from a well in rural United States. Farmer checks drive belt of a motor. He plugs in and the motor and pump run.. He switches it off. A horse drinks the water pumped from the well.
A corn sheller is demonstrated in rural United States. A woman puts corn cobs in the corn sheller. A boy comes and puts a bucket. A man puts corn in the sheller. Buckets full of corn cobs beside the machine.
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