Want to know everything № 100 (1975)

1.

Ordinary chalk in the hands.

Chalk under an electron microscope.

The calcareous shells of single-celled organisms.

2.

A cow in the circus arena.

The cow runs the ball through the maze with its nose.

The cow bows.

3.

The metal ring rotates between the magnets.

Sorting parts with the help of the electromagnet.

4.

Fine sand is poured on a thin disk.

At the edge of the disk is carried out with a bow.

Sound waves running through the disk create a pattern.

Different sounds -different patterns.

5.

Aquarium with fish.

Fish eat other people's eggs.

Arnold's Copein fish jump out of the water and lay their eggs on a leaf.

Fry on the sheet.

Drops with fry roll into the water.

6.

V. Bingler a schoolboy from Minsk does a triple somersault.

7.

Artek.

Grand opening of the shift.

The guys draw on the asphalt.

Ensemble "Mziuri".

Exercise in the fresh air.

Children on the beach.