The B-2 Spirit heavy stealth bomber was deployed in the Balkan war, Afghanistan and Iraq.
This animation demonstrates how electric steam irons work.
The Soviet-made twin-engine interceptor aircraft was first deployed in 1982.
Medieval knights were vassals of feudal lords and fought on horseback in battles.
The Fighting Falcon is the most successful aircraft in the category of multi-purpose fighters.
Simple harmonic motion can be considered to be the one-dimensional projection of uniform circular motion.
This animation presents animals commonly kept as livestock and the primal cuts of their meat.
A force can be measured by measuring the twisting of the torsion wire in a torsion balance.
Blood vessels in fishes' gills absorb oxygen and release carbon dioxide.
The most important types of local winds are the sea-land breeze, the mountain-valley breeze as well as the downslope winds.
A Romanesque style Benedictine church with a special gateway, built in the 13th century in Hungary.
The ingenius water pump designed by Al-Jazari is a great example of the creativity of Medieval Arab engineers.
The medieval Arab inventor, Hassan Al Rammah designed the world's first operating torpedo.
The iron lattice tower, erected for the 1889 World Fair, became the symbol of the capital city of France.
The Tower of Hanoi is a mathematical puzzle.
A floatplane (sometimes called hydroplane) is an aircraft capable of taking off not only dry land, but water too.
A medieval glider constructed by Abbas Ibn Firnas.
The tower situated in the capital city of the Kazakh Republic symbolises the tree of life holding a golden egg.
A Zeppelin is a type of controllable, rigid airship.
The castle of Eger got its final shape and became an important component in the new chain of border forts in the 16th century.