Medieval Arab torpedo (Hassan Al Rammah, 13th century)

The medieval Arab inventor, Hassan Al Rammah designed the world's first operating torpedo.

Persian pontoon bridge (5th century BC)

King Darius as well as Xerxes built pontoon bridges across the Bosphorus for the Persian army.

Marsh harrier

Marsh harriers are birds of prey found almost worldwide.

How does it work? - Microwave oven

This animation demonstrates how microwave ovens work.

Shadows

Change of light conditions in different seasons. Measuring height using shadows.

Ötzi, the Iceman

The mummified body of a man who probably lived in the Chalcolithic period, was found in one of the glaciers of the Alps.

Rietveld Schröder House (Utrecht, 1924)

The Rietveld Schröder House, located in the town of Utrecht in the Netherlands, can be considered a forerunner of modern houses.

Motorcycle

This animation demonstrates the construction of motorcycles.

Mexican redknee tarantula

One of the best known species of spiders, often kept as pets. Its bite is not fatal for humans.

How does it work? - Electric steam iron

This animation demonstrates how electric steam irons work.

Livestock

This animation presents animals commonly kept as livestock and the primal cuts of their meat.

Torsion balances

A force can be measured by measuring the twisting of the torsion wire in a torsion balance.

Simple harmonic motion and uniform circular motion

Simple harmonic motion can be considered to be the one-dimensional projection of uniform circular motion.

Battle of Lepanto (1571)

The Ottoman fleet suffered a catastrophic defeat by the fleet of the Holy League.

Battle of Hastings (1066)

The battle ended with the victory of William the Conqueror´s Norman army over the English.

West Indian Ocean coelacanth

Living fossil, important stage in the evolution of tetrapods.

Slavic warriors

Slavic warriors were greatly respected throughout Europe in the Middle Ages.

Volume and surface area (exercise)

An exercise about the volume and surface area of solids generated from a ´base cube´.

Opera House (Sydney, 1973)

Due to its design and location, the Opera House of the Australian city is one of the most extraordinary opera houses in the world.

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