Every era and every culture has specific residential buildings.
An Ames room is a distorted room that is used to create an optical illusion.
Electrochemical processes in a lead-acid battery produce electric current.
The battle of the Greek-Persian War became famous for the heroic sacrifice of the Spartan soldiers.
Learn the concept of colours, numbers, letters and shapes while playing
In ecology, a niche is a term describing the way of life of a species.
A fjord is a long, narrow inlet with steep sides, created in a valley carved by glacial activity.
Larvae of this type of mayflies spend the first three years of their lives in water, their adult lives last for only one day which they use for mating.
One of the most common types of flatworms.
The last Ice Age ended about 13 thousand years ago.
A geyser is a spring characterised by intermittent discharge of water and steam.
Geckos can walk on walls or even ceilings. The 3D scene explains this ability.
While the density of spider silk is less than that of nylon filaments, its tensile strength is greater than that of steel.
The migration of large human populations began in Ancient times.
One of the most important components of the microwave oven is the magnetron, which produces the microwaves.
The diameter of our galaxy is about 100,000 light years; it contains more than 100 billion stars, one of which is our Sun.
The animation demonstrates the most important types of feathers and their fine structure.
The submarine designed by the Spanish inventor Narcís Monturiol was a pioneering work in the history of underwater navigation.
The Möbius strip and the Klein bottle are special two-dimensional surfaces with only one side.
This animation demonstrates the five regular three-dimensional (or Platonic) solids, the best known of which is the cube.