Giant sequoias are the world's largest living organisms by mass.
Change of light conditions in different seasons. Measuring height using shadows.
The saker falcon is a large bird of prey widespread in Europe and and Asia.
The screw pump commonly attributed to Archimedes made irrigation much more effective
Automobiles have evolved a lot since the late 19th century.
Simple harmonic motion can be considered to be the one-dimensional projection of uniform...
A force can be measured by measuring the twisting of the torsion wire in a torsion balance.
This animation presents animals commonly kept as livestock and the primal cuts of their meat.
This animation demonstrates how electric steam irons work.
The animation shows the forms of government and official languages of the world´s countries.
The castle of Belgrade (Nándorfehérvár) was one of the most important components in the...
Extinct species of fish which had thick ´armour´ protecting the head.
The geographical distribution of major (world) religions has been influenced by...
This animation demonstrates how a washing machine works.
The animation demonstrates how laser printers work
Woodwind instruments differ from brass instruments mainly in their reed.
This animation demonstrates several types of prisms, from general to regular.
Several European countries joined the conquest of the New World, making America a...
The excellent archers were feared members of the Persian army
The first Hungarian-made locomotive powered directly from the national electricity...