Rare Metals

The film tells in a staged form about rare metals, about their properties, which are used in industry and science. The film includes the following filming: The presenter of the film presents the theme of the film: talks about rare metals, which are presented in D. Mendeleev's table and which play an important role in the creation of materials of the latest technology. On the podium are details for a jet plane. One of the parts is made of rare neodymium metal - it does not melt, the other part is made of cast iron. The girl demonstrates how light the first one is from the presented details and how heavy the second one is - made of cast iron. The leading one is another rare metal - gallium. It is a low-melting material. It melts in the palm of the hand from the warmth of the hand. A convoy of trucks with cargo is moving along a winter road in one of the northern regions of the country. Experiments with a rubber ball: demonstrating the elasticity of rubber at normal temperatures and the appearance of brittleness in rubber at low temperatures. The truck driver hits the tire in the cold, but it does not lose its elasticity, because when making tires from artificial rubber, a rare metal is added to it - lithium. Conducting experiments with lithium, to demonstrate its properties: softness, lightness, gas release in water - hydrogen. General view of a ship burning at sea. Crew members in the boat. The radio operator is setting up a radio station. The lithium hybrid in the can is immersed in water, the hydrogen released in this case, fills the shell of a rubber ball, the ball lifts the antenna rope up, the radio station starts working - a distress signal goes on the air. A radio amateur assembles a radio receiver using rare metals: instead of a lamp, triodes of a rare metal - germanium - are used. The radio amateur receives distress signals, sends a message to the port. The rescue ship rushes to the rescue. View of the seaport on the Black Sea. A type of emergency lights on a rescue boat, which use high-transparency colored glass. Reception of sailors in distress on the rescue ship. The doctor is helping one of the sailors, whose arm is injured. General view of an experimental X-ray apparatus that does not operate on electricity. Demonstration of a prototype device. A kind of a piece of a rare metal - bullia, placed in the case of the device. The presenter demonstrates a radioelement with a rare metal - cesium, which causes fluctuations in the electric current, which in turn contribute to sound vibrations.

B&W

1

1958