Dividing Space into Regions by 3 Planes

Division of space by three intersecting planes in several different arrangements.

Volume of a tetrahedron

To calculate the volume of a tetrahedron we start by calculating the volume of a prism.

Pteranodon longiceps

A prehistoric flying reptile, similar to birds. However, there is no direct evolutionary link between the two.

Dice

Regular dice can be used for solving statistical and probability exercises.

Hot air balloon

A hot air balloon is a balloon aircraft which is lifted by hot air.

Water turbine, generator

Water turbines convert the kinetic energy of water into electric current.

How does it work? - Digital camera

This animation demonstrates the structure and operation of digital cameras.

Location of origin of livestock and crops

Domesticated animals and crops originate from various parts of the world.

Soil pollution

This animation demonstrates the main sources of soil pollution.

How does it work? - Optical disc drives

This animation demonstrates the structure and operation of different types of optical disc drives.

Monsoon wind system

In summer, monsoon winds bring heavy rainfall from the ocean to the continent.

Oxygen cycle

The oxygen cycle describes the movement of oxygen within its three main reservoirs.

Relief map of China

An introduction to the relief and hydrography of China.

String quartet

A string quartet consists of four string players, it appeared in the late 18th century.

Quetzalcoatlus, a giant pterosaur

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

Aztec ruler (15th century)

The Aztec Empire was a despotic, militaristic state ruled by the tlatoani.

Oil platform

A long pipe in the centre of the tower penetrates the ocean bed until it reaches the layer that contains oil.

The withdrawal reflex

The withdrawal reflex is a spinal reflex that ensures moving away from potentially damaging stimuli.

Ancient Greek pottery

The masterpieces of ancient Greek potters are important archaeological artefacts.

Abbey of Saint Gall (11th century)

The building complex was one of the most important Benedictine abbeys for centuries.

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