Want to know everything № 113 (1977)

1.

Castle on the lake.

Stone walls and a bridge over the moat.

Great hall of the castle.

Teutonic armor.

Cannon and cannonballs.

Sculpture of the owner of the castle-Lithuanian Prince Vytautas.

Battle of Grunwald (drawing).

Trakai castle.

2.

Camel caravan in the desert (drawing).

Mirage in the desert (drawing).

Cars drive on the sand, but it seems. what's in the water.

Experience: the camera takes a mock-up of the desert.

From below, the sand on the layout is heated.

A Mirage appears on the layout - the sand "turns" into water.

The sand cools - the Mirage disappears.

3.

Experiment with a crow.

The crow gets a worm when you press the lever.

Experiment with two crows:the worm appears in the feeder when two levers are pressed simultaneously.

One of the crows is locked in a box, the second opens the box and frees her friend.

4.

Planes at the airport.

Pilots sit on planes.

Planes take off.

Planes perform aerobatics in the air.