Science and technology № 9 (1972)

1. Chelyabinsk Metallurgical Plant.

Steel ingots on the conveyor.

Roll out.

The operator is at the control panel.

The red - hot whip is cut .

Workpieces in a furnace with a walking hearth.

The final product is wire.

Operators at the control panel.

2. A man knocks out a number on metal.

The engine of a car with an embossed number.

Large: number.

Destroying the number.

With the help of two magnets and a metal powder, the number can be identified.

Electrochemical method of detecting a downed number.

Laboratory of the Institute of Forensic Examinations.

3. Computer room.

A woman works on a computer.

Poorly distinguishable text.

Hands typing on a typewriter.

Linotype in the printing house.

Magnetic tape with recorded text.

The tape is inserted into the receiving device of the photodetector machine.

The image on the kinescope.

The finished text.

4. Timur's tomb in Samarkand.

Madrasah.

Sextant.

The starry sky.

An old map.

An ancient map of the starry sky.

Old engravings depicting astronomers.

Spacecraft in Space (drawings).