Your cart is emptyShop
One of the main settings in the well-known Hungarian youth novel was a timberyard.
A colourless, viscous liquid, a highly corrosive, strong acid used in several industrial processes.
Potassium permanganate is used as a disinfectant.
The term ´kuruc´ denoted armed anti-Habsburg rebels (coming from various social classes) in Hungary in the 17th and 18th centuries.
A light yellow compound formed in the reaction of silver nitrate and potassium iodide.
Common salt (or table salt) is one of the most important sodium compounds, indispensable for living organisms.
A white, crystalline compound which breaks down when exposed to light.
Football is one of the most popular team sports due to its relatively low equipment requirements and simple set of rules.
A 4-carbon alcohol commonly used as a solvent.
Karst formations include dolines and dripstones.
Buildings constructed of prefabricated concrete blocks were widespread in the former Socialist countries.
The animation helps to develop space perception and navigation in space using space coordinates.
Leonardo was not only a master artist, but also an accomplished military engineer.
Leonardo's creative legacy also includes several projects related to bridges. This unusual swing bridge allowed for undisturbed water traffic.
The mechanical wing is one of the masterpieces among Leonardo's sketches related to aviation.
The polymath thought that if a screw-like structure can rotate fast enough, it will 'drill' into the air and fly.
Senators, being members of the highest social class of ancient Rome, wore togas with purple edges.
The design for the armoured car features the most important military requirements: reliability, portability and great firepower.
Leonardo based the design of the flapping wing on birds' wings and a faulty hypothesis.
The equipment of ancient Chinese soldiers was rudimentary.