Telegraph (Samuel F. B. Morse)

The American inventor presented his invention revolutionising telecommunication at New York University in 1837.

Telephone (Alexander Graham Bell)

The device that transmits human voice as electrical signals was invented by Bell in 1876.

Yuri Gagarin's journey to outer space (1961)

Yuri Gagarin became the first human in space on 12 April 1961.

Watermill

Machines converting the energy of flowing or falling water into useful forms of power were already in use in the Middle Ages.

The science of candles

Candles have been used for lighting since ancient times.

Ancient Greek house

The average house in Ancient Greece had a rectangular, geometrical floor plan and two storeys.

Wright Flyer I (1903)

The Wright Flyer was the first successful powered, heavier-than-air aircraft, designed and built by the Wright brothers.

The life cycle of vertebrates

The life cycle of vertebrates starts with the production of the reproductive cells of an individual and ends with the production of the reproductive cells...

Vegetative plant organs

These organs are vital for the survival and development of plants.

Diocletian's Palace (Split, Croatia)

The fortress-like palace was built by Roman Emperor Diocletian on the coast near his home town.

Characteristics of sound waves

This animation explains the most important characteristics of waves through sound waves.

Theatre of Pompey (Rome, 1st c. BC)

The building commissioned by Pompey the Great was the first permanent theatre in Ancient Rome.

Titanic (1912)

RMS Titanic was the largest passenger ship at the beginning of the 20th century.

Icebergs

Icebergs are blocks of frozen freshwater floating in the sea.

DNA

Carrier of genetic information in cells.

Kaaba (Makkah)

Located in the Grand Mosque of Makkah, the Kaaba shrine is the most sacred site of Islam.

Gravitational waves (LIGO)

Massive accelerating or orbiting bodies cause ripples in spacetime. These are called gravitational waves.

The Black Death (Europe, 1347–1353)

The bacterial disease known as the bubonic plague is one of the deadliest infectious diseases in the history of mankind.

Roman soldier (1st century BC)

Mercenaries of the ancient Roman army were well-trained and well equipped with the most up-to-date weapons.

Soviet labour camp (1930s)

Soviet labour camps (Gulags) were located far from inhabited areas.

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