The church consecrated to Saint Basil was commissioned by Ivan the Terrible.
Capacitors store electrical energy in the form of electric charge.
Glands of the endocrine system secrete hormones into the blood.
This animation explains the technology of shale gas extraction.
An Ames room is a distorted room that is used to create an optical illusion.
Before the American Civil war the use of slaves on plantations was typical in the Southern states.
This animation demonstrates different types of soil.
Computer hard disk drives are devices of magnetic data storage.
The archaeopteryx shows characteristics of both birds and reptiles. It is probably the ancestor of birds.
The reproductive system consists of organs which work together for the purpose of reproduction.
Gladiators were combatants who entertained audiences in fights against each other or wild animals in ancient Roman arenas.
The Vought F4U Corsair radial-engined naval fighter was one of the most prominent American aircraft of the Second World War.
A species of venomous snakes widespread in Europe. Its bite is rarely fatal to humans.
Surface epithelia cover the external and internal surfaces of the body
Scoliosis is a medical condition in which a person's spine has a lateral deviation.
Careful tooth brushing is an important part of oral hygiene.
The reproductive system is a series of organs working together for the purpose of reproduction.
This animation demonstrates how mobile phones work.
A type of rotary engine of high efficiency
Synovial joints can be categorised by the direction of movement they allow.