The inflammation of the vermiform appendix, which is connected to the cecum, requires immediate surgical intervention. The animation shows the cause and...
This animation demonstrates the most important relief features, surface waters and their relevant symbols.
The primary duty of these Japanese warriors was to serve their feudal lords, even at the cost of their own lives.
Designated as the first National Treasure of South Korea, the Namdaemun was one of the major gateways of Seoul's Medieval city walls.
Located close to Osaka, the Japanese castle is also called the White Heron because of its white exterior.
A symbol of division and oppression, the Wall tore a city and numerous families apart.
This animations demonstrates the exterior and interior construction of cars, as well as their operation.
A game to practise the use of analogue and digital clocks.
This animation demonstrates how solar energy can be utilised.
Division of space by three intersecting planes in several different arrangements.
Ports must provide necessary infrastructure and services for industry and marine transport.
Airports provide infrastructure and services necessary for aviation.
The most ancient group of animals, they live underwater, lack real tissues and body symmetry.
Cyclones are large areas of circulating air with clouds and precipitation being formed in its centre.
To calculate the volume of a tetrahedron we start by calculating the volume of a prism.
This animation demonstrates the structure and most important peripherals of desktop computers.
A two-stroke engine is a type of internal combustion engine with a cycle of only two (power) strokes.
Actekų imperija buvo despotiška, militaristinė valstybė, valdoma valdovo tlatoani ("karalius").
Didžiulės Tolimųjų Rytų imperijos imperatorius buvo gyvybės ir mirties valdovas.
Cold and warm fronts are formed where bodies of cold and warm air meet.