The curvature of the lens of the eye changes when we look at a distant or at a near object, to ensure a sharp image.
What happens in a liquid during evaporation and boiling? What does its boiling point depend on?
This animation demonstrates geometric translation in both plane and space.
Napoleon I, who crowned himself emperor, was one of the most outstanding military commanders in history.
Certain mushrooms are poisonous and can be fatal for humans when consumed, while others are edible and used widely in cooking.
Human bones are joined together by cartilaginous or synovial joints, sutures or they can fuse together.
The fortress-like palace was built by Roman Emperor Diocletian on the coast near his home town.
The bacterial disease known as the bubonic plague is one of the deadliest infectious diseases in the history of mankind.
This animation explains the most important characteristics of waves through sound waves.
The life cycle of vertebrates starts with the production of the reproductive cells of an individual and ends with the production of the reproductive cells...
Carrier of genetic information in cells.
The theatre that has a distinctive shape and excellent acoustics was situated at the side of the Acropolis in Athens.
This animation demonstrates how a turbojet engine works.
Massive accelerating or orbiting bodies cause ripples in spacetime. These are called gravitational waves.
Soviet labour camps (Gulags) were located far from inhabited areas.
This animation explains active and passive transport processes occurring through cell membranes
3-dimensional Cartesian coordinate system with illustrations and exercises that develop spatial perception.
The popular model of the American automobile factory was the first mass-produced car in the world.
This physicist-inventor and electrical engineer who mainly dealt with electrotechnics was undoubtedly one of the most brilliant figures of the second...
This scene summarizes the main organs of the human body.