Battle of Issus (333 BC)

The battle ended with the overwhelming victory of the Macedonian army over the Persian army led by Darius III.

Spider silk, spider web

While the density of spider silk is less than that of nylon filaments, its tensile strength is greater than that of steel.


The characteristic ancient Greek statue was found on the bottom of the Adriatic Sea.

Medieval Chinese Emperor

The Emperor of the vast Far-Eastern empire was the lord of life and death.

Passive house

In a passive house a comfortable inner temperature can be ensured without the use of traditional heating and cooling systems.

USS Tarawa LHA-1 (1976)

From the 1940s, the increasingly large aircraft carriers became the masters of the oceans.

Ivan Meštrović: History of the Croats

One of the Croatian sculptor's most famous works depicts a woman wearing a traditional costume.

Cockchafer (Maybug)

The cockchafer (or maybug) is a widespread bug in Europe. Its larvae, known as chafer grubs are considered a pest.


Ports must provide necessary infrastructure and services for industry and marine transport.

3D Tangram

A special, 3D version of the well-known Chinese logical game.

Axit stearic (octadecanoic acid) (C₁₇H₃₅COOH)

Một chất rắn, màu trắng, một thành phần của dầu thực vật và mỡ động vật.

European honeybee

Honeybees produce a sweet and nutritious substance, honey.

Red deer

Red deer are even-toed ungulates, ruminants. Their males have spectacular antlers.

Southern wood ant

An ant colony consist of a queen, male ants and workers.

Grass snake

A type of snake with a characteristic spot on its neck.

Hierarchy of the Medieval Christian church (11th century)

This animation shows the hierarchical structure of the Medieval Christian church.

Types of gears

Two meshing gears transmit torque during their rotational motion.

Sự hòa tan của NaCl

Muối thông thường tan trong nước: các phân tử phân cực nước hình thành một lớp phủ xung quanh các ion.

Aurora cruiser ship (1900)

The name of the Russian armoured cruiser became well known during the October Revolution of 1917.

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