Electric motors

Electric motors are present in many areas of our everyday lives. Let's learn about the different types.

Planets, sizes

The inner planets of the Solar System are terrestrial planets while the outer planets are gas giants.

Theatre of Dionysus (Athens, 4th century BC)

The theatre that has a distinctive shape and excellent acoustics was situated at the side of the Acropolis in Athens.

Egyptian Pyramids (Giza, 26th century BC)

The Giza Necropolis is the only one of the Ancient wonders still intact.

Types of bone articulations

Human bones are joined together by cartilaginous or synovial joints, sutures or they can fuse together.

The sense of balance

The position and acceleration of the head is detected by the inner ear.

Ancient Egyptian house

An average Egyptian dwelling consisted of regularly arranged rooms.

Globe Theatre (London, 17th century)

One of the directors of the circular, open-air Renaissance theatre in London was William Shakespeare.

The Sun's path above the major circles of latitude

The apparent movement of the Sun is caused by the Earth's rotation around its axis.

Operation of river locks

River locks make rivers with great level differences safe for boating.

Pyramid of Djoser (Saqqara, 27th century BC)

The step pyramid, built in the 27th century BC, was the first pyramid in Egypt.

Wonders of the Ancient World

Today only one of the Wonders of the Ancient World is still intact: the Pyramids of Giza.

Bastille (Paris, 18th century)

The Parisian prison became legendary after the Revolution of 1789.

Scale exercises

An interesting logical exercise: you have many weights that look the same, you have to find the only one that is different.

Container ships

Commercial maritime routes of container ships form a global network.

Concorde (1969)

The first supersonic passenger airliner entered service in 1976.

Circus Maximus (Rome)

The ancient Roman arena became well-known for the chariot races held here.

The spread of Homo sapiens on Earth

The 'wise man' originated in Africa and dispersed throughout most of the continents.

Veiled chameleon

Chameleons are reptiles with an ability to change their colours.

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