Gametes

The zygote is the initial cell formed when two gamete cells are joined by means of sexual reproduction.

Bulbous spring plants

This animation demonstrates the anatomy of tulips, daffodils and snowdrops.

The upper gastrointestinal tract

During swallowing food travels from the mouth cavity into the stomach.

Lute and hurdy gurdy

The earliest version of the lute appeared in ancient Mesopotamia.

Auschwitz-Birkenau concentration camp

More than one million people died in the WWII Nazi death camp located in present-day Poland.

Battle of Salamis (480 BC)

The Greek fleet owed their success to their good tactics and their fast and easily manoeuvrable ships.

Turkish bath (16th century)

One of the positive influences of the Ottoman invasion of Europe was the construction of baths.

The history of aviation

The animation offers a summary of the history of aviation from the Middle Ages.

Tutankhamun’s tomb (14th century BC)

One of the greatest archaeological finds of the 20th century was the tomb of the Egyptian pharaoh.

Hypothalamic-pituitary axis

The Hypothalamic-pituitary axis is the regulating centre of our endocrine system.

Jameh Mosque (Isfahan, 15th century)

Its architectural solutions and ornamentation rank this mosque among the masterpieces of Islamic art.

Quetzalcoatlus, a giant pterosaur

Quetzalcoatlus was one of the largest known flying animals of all time.

Typical dwelling types

Every era and every culture has specific residential buildings.

Battle of Thermopylae (480 BC)

The battle of the Greek-Persian War became famous for the heroic sacrifice of the Spartan soldiers.

Solomon's Temple (Jerusalem, 10th century BC)

Solomon's temple became one of the most important symbols of Jewish architecture.

Effects of smoking on the lungs

Smoking severely damages the respiratory system, it may cause COPD or lung cancer.

Dodo

The dodo is an extinct species of birds that used to be native to the island of Mauritius. It has become the symbol of extinction.

Conformations of ethane

The staggered conformation of ethane is more stable than the eclipsed conformation.

p-V-T diagram for ideal gases

The relationship between the pressure, volume and temperature of ideal gases is described by the gas laws.

Lead-acid battery

Electrochemical processes in a lead-acid battery produce electric current.

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