An earthquake is one of the most devastating natural phenomena.
The excellent road and aqueduct system covering the whole empire reflects well the development of the Roman civilisation.
A demonstration of nearby planets, stars and galaxies.
This animation explains transparency and opacity, the principle of radiography, and the light-absorbing properties of materials.
The Benz Patent-Motorwagen is widely regarded as the first vehicle propelled by an internal combustion engine.
This animation demonstrates how a turbojet engine works.
This Pacific island is famous for its unique monolithic human figures.
Humans have 4 types of teeth: incisors, canines, premolars and molars.
The legendary city of the Mayan-Toltec Empire was located on the territory of present-day Mexico.
The Doric, Ionic and Corinthian order of columns are different in size and ornamentation as well.
This animation presents the main types of leaves and the differences between monocot and dicot leaves.
This animation demonstrates Sir Isaac Newton's three laws of motion that laid the foundation for classical mechanics.
The animation shows the traditional Japanese wooden townhouse, the machiya.
While generators convert mechanical energy into electrical energy, electric motors convert electrical energy into mechanical energy.
Physical properties, as well as the flora and fauna of the ocean change with depth.
This animation demonstrates the structure and operation of CT scanners.
The animation demonstrates the different flower types of angiosperms.
This animation explains active and passive transport processes occurring through cell membranes
The French Montgolfier brothers were the first pioneers of flying.
Energy released during nuclear fission can be used for civilian or military purposes.