The device that transmits human voice as electrical signals was invented by Bell in 1876.
The double-decked, wide-bodied passenger aircraft can carry more then 500 passengers.
The position and acceleration of the head is detected by the inner ear.
One of the most modern means of transport is the Maglev, capable of travelling at speeds of over 400 km/h.
The American inventor presented his invention revolutionising telecommunication at New York University in 1837.
The Earth is a rocky planet with a solid crust and oxygen in its atmosphere.
This animation demonstrates geometric reflection, a type of geometric transformation both in plane and space.
This animation shows how trees change throughout the seasons, demonstrated by the example of English oaks.
This animation shows the symptoms and treatment of secretory otitis media.
A Zeppelin is a type of rigid-framed airship.
Stratovolcanoes consist of layers of volcanic ash, debris and lava.
The American electrical engineer Edison invented the incandescent light bulb in 1879, which changed our everyday life.
Chess games can help to develop logic skills.
Studying Ceres and Vesta will help us learn more about the early history of the Solar System and how rocky planets are formed.
A spectacular demonstration of algebraic expressions.
This animation demonstrates the structure and operation of hair dryers.
The ´Temple of all gods´ was built during the reign of the Roman Emperor Hadrian.
The Earth’s magnetic North and South poles are located near the geographic North and South poles.
Matter is made up by quarks and leptons, while interactions are carried by bosons.
Formula 1 is the highest class and most popular type of motor racing.