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Luckenwalde Germany 1942 stock footage and images
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A German submarine torpedoes a U.S. ship underway in the Atlantic Ocean.
A German submarine underway in the Atlantic Ocean during World War II. German sailors and officer aboard the submarine. They watch a U.S. ship through a periscope. A sailor watches the target through binoculars. The submarine emerges out of water and torpedoes the ship. The ship burns. German sailors watch the burning ship and cheer.
People gather to meet King Christian X of Denmark in Copenhagen, Denmark
Danish civilians meet King Christian X of Denmark in the streets of Copenhagen. People walking in the street. King Christian X arrives on horseback. People gather near the king. Buildings along the side of the street. The Royal Danish flag flying on a flagpole. Children stand and salute the flag. King Christian X and the Danish Royal family including Crown Prince Frederik and his daughter Princess Margrethe, stands in a balcony of the Amalienborg Palace and waves towards a crowd.
The demonstration of the principles of the steam power in the United States.
A film titled: 'The Magic of Steam' depicts the working of the steam turbines in the United States. A woman seated in her room turns the light on. Men work inside a factory. Electric poles in an area. Wires connected from one electric pole to the other. A pie chart depicts the power used for the production of electricity. 65 percent of steam and 30 percent of water being used for the purpose. Men work inside a factory. They work on steam turbine. A man demonstrates the working of a steam turbine using the steam. A man places a tea kettle to heat. Steam arising out of the kettle as the water boils. A paddle wheel is placed near the kettle from which the steam comes out. The wheels start revolving due to the steam. A lid is placed on the kettle. The high pressure of steam lets the wheels to revolve faster and pushes the kettle in the opposite direction. The lid is then removed from the kettle. Another example to demonstrate the concept of steam is that of the fire hoses. Firemen try to control the fire in a building with the help of fire hoses. Men work near a steam turbine in a factory. (World War II period).
The use of steam power by the steam turbine in the United States.
The working of the steam turbines in the United States. A drawing depicts the first stage of the working of the steam turbine. The steam jets strike the blades of the turbine. The blades receive the steam and change their direction. The spindles are driven through the process. A man demonstrates the working of the steam turbine through the tea kettle. A tea kettle is placed to boil the water. The steam comes out of the kettle and revolves the paddle wheel kept nearby. The impulse stage of modern steam turbine being demonstrated. The blades being forced to move due to the pressure of the steam. The direction of steam is changed and it gives more power to the revolving spindles. A man works on the steam turbine. Steam coming out of a tea kettle. The steam moves through stationery blades first and then through the blades in motion. The steam enters from the boiler to the turbine. It then passes through the nozzle. The quantity of the steam at this stage should be constant. The turbine rotates because of the steam and it turns the shaft. The centrifugal force works at this time. The valve in the turbine opens. The small piston moves down. The large piston moves upwards. The force moves the valve. The speed of the turbine is decreased. The quantity of steam is increased and the speed thus increases.
The use of larger blades to allow the proper expansion of steam inside the turbine in the United States.
The working of the steam turbines in the United States. Steam turbines in a factory. The previous steam turbines faced the problems of speed control. The modern steam turbines are thus directed through larger sized blades. The longer and larger blades being used for the expansion of steam efficiently. The blades operate in high ad low pressure. Steam enters from the boiler to the turbine. It is regulated by the control valve inside the turbine. The steam strikes the blades inside the turbine and the blades move. The longer and larger blades allow the steam to expand efficiently. Man works on the steam turbine.
The control of the centrifugal force and oil flow through the turbine in the United States.
The working of the steam turbines in the United States. The reaction and impulse principles used in harnessing the steam power in turbines. The demonstration of the speed of steam in the turbine. A police officer firing his revolver. View of him while he fires his handgun at targets on a firing range. The speed of blades of turbine when they revolve is noticed with the help of gauges. The blades must be anchored properly so that the pressure can be controlled. The control of centrifugal force in the turbine. Men work on the steam turbine. Some maintenance problems arise when high speed turbines are constructed. Careful designing of the steam turbine being done for the control of the great speed of the steam. A high quality oil is needed for lubricating the parts of the turbine. A diagrammatic representation of the working of the auxiliary pump. The working of the oil filter, oil tank, main oil pump driven by the shaft are also represented. The check valve opens and the oil flows in the turbine. The speed of the pump being regulated. The metal surfaces of the turbine never touch each other. They are separated by the film of oil.
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